/*
  نظام التصميم الموحّد لمنصة شبكة سديم — "سديم ليلي / Nebula Noir"
  مزيج: حبر ليلي تقني + نحاس بوليسي كلاسيكي (مكتبة أجاثا) + ضباب سديمي.
  ملف واحد: رموز التصميم + مكوّنات + حالات. خصائص RTL-آمنة (inline/block).
*/

/* ==================== 1. الرموز (Design Tokens) ==================== */
:root {
    /* لوحة الألوان الأساسية المسماة */
    --sd-ink: #0a1018;
    --sd-slate: #121a26;
    --sd-slate-2: #1a2433;
    --sd-brass: #c4a35a;
    --sd-brass-bright: #d9bc74;
    --sd-mist: #4a7d95;
    --sd-mist-soft: #6a9bb0;
    --sd-fog: #e4e9f0;

    /* ألوان الخلفية */
    --sd-bg: var(--sd-ink);
    --sd-bg-elevated: var(--sd-slate);
    --sd-bg-elevated-2: var(--sd-slate-2);
    --sd-bg-overlay: rgba(6, 10, 16, 0.78);
    --sd-bg-pattern:
        radial-gradient(ellipse 80% 50% at 10% -10%, rgba(74, 125, 149, 0.14), transparent 55%),
        radial-gradient(ellipse 60% 40% at 100% 0%, rgba(196, 163, 90, 0.07), transparent 50%);

    /* ألوان الحدود */
    --sd-border: rgba(228, 233, 240, 0.08);
    --sd-border-strong: rgba(228, 233, 240, 0.16);

    /* ألوان النص */
    --sd-text: var(--sd-fog);
    --sd-text-secondary: #9aa8b8;
    --sd-text-muted: #6e7d8f;
    --sd-text-on-accent: #0a1018;

    /* اللون الأساسي (Brand) — نحاس بوليسي */
    --sd-accent: var(--sd-brass);
    --sd-accent-hover: #b08f45;
    --sd-accent-light: var(--sd-brass-bright);
    --sd-accent-soft: rgba(196, 163, 90, 0.12);
    --sd-accent-soft-strong: rgba(196, 163, 90, 0.24);
    --sd-gradient: linear-gradient(135deg, var(--sd-brass-bright), var(--sd-brass));
    --sd-secondary: var(--sd-mist);
    --sd-secondary-soft: rgba(74, 125, 149, 0.16);

    /* ألوان الحالة (Semantic) — بدون فسفور نيون */
    --sd-success: #3d9a6a;
    --sd-success-soft: rgba(61, 154, 106, 0.14);
    --sd-warning: #d4a017;
    --sd-warning-soft: rgba(212, 160, 23, 0.14);
    --sd-danger: #c45c5c;
    --sd-danger-soft: rgba(196, 92, 92, 0.14);
    --sd-info: var(--sd-mist-soft);
    --sd-info-soft: rgba(106, 155, 176, 0.14);

    /* الخطوط: واجهة + عرض أدبي */
    --sd-font: "IBM Plex Sans Arabic", "Tajawal", "Segoe UI", system-ui, sans-serif;
    --sd-font-display: "Amiri", "IBM Plex Sans Arabic", Georgia, serif;
    --sd-fs-xs: 0.75rem;
    --sd-fs-sm: 0.85rem;
    --sd-fs-base: 0.95rem;
    --sd-fs-md: 1.05rem;
    --sd-fs-lg: 1.25rem;
    --sd-fs-xl: 1.55rem;
    --sd-fs-2xl: 1.95rem;
    --sd-fs-3xl: 2.55rem;
    --sd-lh-tight: 1.25;
    --sd-lh-normal: 1.65;
    --sd-lh-loose: 1.9;
    --sd-fw-regular: 400;
    --sd-fw-medium: 500;
    --sd-fw-bold: 700;
    --sd-fw-black: 800;

    /* المسافات (Spacing scale, base 4px) */
    --sd-sp-1: 0.25rem;
    --sd-sp-2: 0.5rem;
    --sd-sp-3: 0.75rem;
    --sd-sp-4: 1rem;
    --sd-sp-5: 1.25rem;
    --sd-sp-6: 1.5rem;
    --sd-sp-8: 2rem;
    --sd-sp-10: 2.5rem;
    --sd-sp-12: 3rem;
    --sd-sp-16: 4rem;

    /* استدارة أوضح وأقل «SaaS» */
    --sd-radius-sm: 4px;
    --sd-radius-md: 8px;
    --sd-radius-lg: 12px;
    --sd-radius-xl: 16px;
    --sd-radius-full: 999px;

    /* الظلال */
    --sd-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.28);
    --sd-shadow-md: 0 10px 28px rgba(0, 0, 0, 0.4);
    --sd-shadow-lg: 0 22px 48px rgba(0, 0, 0, 0.55);
    --sd-shadow-glow: 0 0 0 1px rgba(196, 163, 90, 0.28), 0 10px 28px rgba(74, 125, 149, 0.16);

    /* طبقات Z-index */
    --sd-z-dropdown: 200;
    --sd-z-sticky: 300;
    --sd-z-bottom-nav: 350;
    --sd-z-overlay: 900;
    --sd-z-modal: 1000;
    --sd-z-toast: 1100;
    --sd-z-tooltip: 1200;
    --sd-z-fab: 400;

    /* مقاسات لمس دنيا (إتاحة الوصول) */
    --sd-tap-min: 44px;
    --sd-bottom-nav-h: 64px;

    color-scheme: dark;
}

/* ==================== 2. القواعد الأساسية ==================== */
.sd-root, body.sd-app {
    background: var(--sd-bg);
    background-image: var(--sd-bg-pattern);
    background-attachment: fixed;
    color: var(--sd-text);
    font-family: var(--sd-font);
    font-size: var(--sd-fs-base);
    line-height: var(--sd-lh-normal);
    -webkit-font-smoothing: antialiased;
}
body.sd-app.has-bottom-nav {
    padding-bottom: calc(var(--sd-bottom-nav-h) + env(safe-area-inset-bottom, 0px));
}

.sd-app * { box-sizing: border-box; }
.sd-app img, .sd-app video, .sd-app svg { max-width: 100%; }
.sd-app .sd-card, .sd-app .sd-container, .sd-app main, .sd-app section { min-width: 0; }

html, body.sd-app { overflow-x: hidden; max-width: 100%; }

.sd-app ::selection { background: var(--sd-accent-soft-strong); color: var(--sd-text); }

/* حلقة تركيز واضحة وموحّدة لكل عنصر قابل للتفاعل (إتاحة الوصول + لوحة المفاتيح) */
.sd-app a:focus-visible,
.sd-app button:focus-visible,
.sd-app input:focus-visible,
.sd-app textarea:focus-visible,
.sd-app select:focus-visible,
.sd-app [tabindex]:focus-visible {
    outline: 2px solid var(--sd-accent-light);
    outline-offset: 2px;
    border-radius: var(--sd-radius-sm);
}

.sd-sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.sd-container { max-width: 1180px; margin-inline: auto; padding-inline: var(--sd-sp-6); }
.sd-global-back-wrap { max-width: 1180px; margin: 0 auto; padding: var(--sd-sp-3) var(--sd-sp-6) 0; }
.sd-global-back {
    display: inline-flex; align-items: center; gap: var(--sd-sp-2); min-height: var(--sd-tap-min);
    padding: var(--sd-sp-2) var(--sd-sp-3); border: 1px solid var(--sd-border-strong);
    border-radius: var(--sd-radius-sm); background: transparent; color: var(--sd-text-secondary);
    font: inherit; font-size: var(--sd-fs-sm); cursor: pointer;
}
.sd-global-back:hover { color: var(--sd-text); background: var(--sd-accent-soft); border-color: var(--sd-accent-soft-strong); }
.sd-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--sd-sp-4);
}

@media (max-width: 760px) {
    .sd-grid-3 { grid-template-columns: 1fr; gap: var(--sd-sp-3); }
    .sd-sidebar-item { font-size: var(--sd-fs-base); min-height: 48px; }
    .sd-dropdown-item { font-size: var(--sd-fs-base); min-height: 44px; }
}

/* ==================== 3. العناوين والنصوص ==================== */
.sd-h1 { font-family: var(--sd-font-display); font-size: var(--sd-fs-3xl); font-weight: var(--sd-fw-bold); line-height: var(--sd-lh-tight); }
.sd-h2 { font-family: var(--sd-font-display); font-size: var(--sd-fs-2xl); font-weight: var(--sd-fw-bold); line-height: var(--sd-lh-tight); }
.sd-h3 { font-size: var(--sd-fs-xl); font-weight: var(--sd-fw-bold); line-height: var(--sd-lh-tight); }
.sd-h4 { font-size: var(--sd-fs-md); font-weight: var(--sd-fw-bold); }
.sd-text-secondary { color: var(--sd-text-secondary); }
.sd-text-muted { color: var(--sd-text-muted); }
.sd-eyebrow {
    font-size: var(--sd-fs-sm); font-weight: var(--sd-fw-medium);
    color: var(--sd-mist-soft); letter-spacing: 0.02em;
}

/* ==================== 4. الأزرار (Buttons) ==================== */
.sd-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: var(--sd-sp-2);
    min-height: var(--sd-tap-min); padding-inline: var(--sd-sp-5); padding-block: var(--sd-sp-2);
    border-radius: var(--sd-radius-md); border: 1px solid transparent;
    font-family: inherit; font-size: var(--sd-fs-sm); font-weight: var(--sd-fw-bold);
    cursor: pointer; text-decoration: none; white-space: nowrap; position: relative; overflow: hidden;
    transition: transform 0.15s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
    user-select: none;
}
.sd-btn:active { transform: translateY(1px) scale(0.98); }
.sd-btn:disabled, .sd-btn[aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; pointer-events: none; }

.sd-btn-primary { background: var(--sd-gradient); color: var(--sd-text-on-accent); box-shadow: var(--sd-shadow-sm); }
.sd-btn-primary:hover { box-shadow: var(--sd-shadow-glow); transform: translateY(-1px); }

.sd-btn-secondary { background: var(--sd-bg-elevated-2); color: var(--sd-text); border-color: var(--sd-border-strong); }
.sd-btn-secondary:hover { background: var(--sd-bg-elevated); border-color: var(--sd-accent-light); }

.sd-btn-outline { background: transparent; color: var(--sd-accent-light); border-color: var(--sd-accent-soft-strong); }
.sd-btn-outline:hover { background: var(--sd-accent-soft); }

.sd-btn-ghost { background: transparent; color: var(--sd-text-secondary); }
.sd-btn-ghost:hover { background: var(--sd-bg-elevated-2); color: var(--sd-text); }

.sd-btn-danger { background: var(--sd-danger); color: #fff; }
.sd-btn-danger:hover { background: #e04343; box-shadow: 0 8px 24px rgba(255, 82, 82, 0.28); }

.sd-btn-sm { min-height: 34px; padding-inline: var(--sd-sp-3); font-size: var(--sd-fs-xs); }
.sd-btn-lg { min-height: 52px; padding-inline: var(--sd-sp-8); font-size: var(--sd-fs-md); }
.sd-btn-icon { min-width: var(--sd-tap-min); padding-inline: 0; }
.sd-btn-block { width: 100%; }

/* ==================== 5. حقول الإدخال (Forms) ==================== */
.sd-form-group { display: flex; flex-direction: column; gap: var(--sd-sp-2); margin-bottom: var(--sd-sp-5); }
.sd-field { display: flex; flex-direction: column; gap: var(--sd-sp-2); margin-bottom: var(--sd-sp-5); }
.sd-label { font-size: var(--sd-fs-sm); font-weight: var(--sd-fw-medium); color: var(--sd-text-secondary); }
.sd-label .sd-required { color: var(--sd-danger); margin-inline-start: var(--sd-sp-1); }
.sd-hint { font-size: var(--sd-fs-xs); color: var(--sd-text-muted); }
.sd-error-text { font-size: var(--sd-fs-xs); color: var(--sd-danger); display: flex; align-items: center; gap: var(--sd-sp-1); }

.sd-input, .sd-textarea, .sd-select {
    width: 100%; min-height: var(--sd-tap-min); padding-inline: var(--sd-sp-4); padding-block: var(--sd-sp-2);
    background: var(--sd-bg-elevated); border: 1px solid var(--sd-border-strong); border-radius: var(--sd-radius-md);
    color: var(--sd-text); font-family: inherit; font-size: var(--sd-fs-base);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.sd-textarea { min-height: 110px; padding-block: var(--sd-sp-3); resize: vertical; }
.sd-input::placeholder, .sd-textarea::placeholder { color: var(--sd-text-muted); }
.sd-input:focus, .sd-textarea:focus, .sd-select:focus {
    outline: none; border-color: var(--sd-accent); box-shadow: 0 0 0 3px var(--sd-accent-soft);
}
.sd-input:disabled, .sd-textarea:disabled, .sd-select:disabled { opacity: 0.5; cursor: not-allowed; }
.sd-form-group.has-error .sd-input,
.sd-form-group.has-error .sd-textarea,
.sd-form-group.has-error .sd-select { border-color: var(--sd-danger); box-shadow: 0 0 0 3px var(--sd-danger-soft); }

/* ==================== 6. البطاقات (Cards) ==================== */
.sd-card {
    background: var(--sd-bg-elevated);
    border: 1px solid var(--sd-border);
    border-inline-start: 3px solid transparent;
    border-radius: var(--sd-radius-md);
    padding: var(--sd-sp-6);
    box-shadow: none;
    transition: border-color 0.2s ease, background 0.2s ease;
}
.sd-card-hover:hover {
    border-color: var(--sd-border-strong);
    border-inline-start-color: var(--sd-brass);
    background: var(--sd-bg-elevated-2);
}
.sd-card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--sd-sp-4); gap: var(--sd-sp-3); }
.sd-card-footer { margin-top: var(--sd-sp-4); padding-top: var(--sd-sp-4); border-top: 1px solid var(--sd-border); }

/* ==================== 7. الجداول (Tables) ==================== */
.sd-table-wrapper { overflow-x: auto; border: 1px solid var(--sd-border); border-radius: var(--sd-radius-lg); }
.sd-table { width: 100%; border-collapse: collapse; min-width: 560px; font-size: var(--sd-fs-sm); }
.sd-table thead th {
    position: sticky; top: 0; z-index: 1; background: var(--sd-bg-elevated-2); color: var(--sd-text-secondary);
    font-weight: var(--sd-fw-bold); text-align: start; padding: var(--sd-sp-3) var(--sd-sp-4);
    border-bottom: 1px solid var(--sd-border-strong); white-space: nowrap;
}
.sd-table tbody td { padding: var(--sd-sp-3) var(--sd-sp-4); border-bottom: 1px solid var(--sd-border); vertical-align: middle; }
.sd-table tbody tr:nth-child(even) { background: rgba(255, 255, 255, 0.02); }
.sd-table tbody tr:hover { background: var(--sd-accent-soft); }
.sd-table tbody tr:last-child td { border-bottom: none; }
.sd-table-actions { display: flex; gap: var(--sd-sp-2); align-items: center; }
.sd-table-toolbar { display: flex; flex-wrap: wrap; gap: var(--sd-sp-3); align-items: center; justify-content: space-between; margin-bottom: var(--sd-sp-4); }
.sd-pagination { display: flex; gap: var(--sd-sp-2); align-items: center; justify-content: center; margin-top: var(--sd-sp-5); }
/* أزرار الأيقونة الصغيرة (إجراءات الجداول، الترقيم) كانت تنكمش لـ34px مع .sd-btn-sm —
   أقل من حد اللمس الآمن 44px. هذا يعيدها لأقل مساحة لمس آمنة بدون تكبير الشكل البصري كثيراً. */
.sd-btn-icon.sd-btn-sm, .sd-pagination .sd-btn-icon { min-width: var(--sd-tap-min); min-height: var(--sd-tap-min); }

/* بطاقات بدل الجداول العريضة على الشاشات الضيقة — تفعّل بإضافة data-label="..." لكل <td>
   (الرأس <thead> يختفي، وكل صف يتحول لبطاقة بعمود واحد: تسمية + قيمة). اختيارية بالكامل:
   أي جدول ما تضاف له data-label يبقى بسلوكه الحالي (تمرير أفقي، .sd-table-wrapper). */
@media (max-width: 640px) {
    .sd-table-cards thead { display: none; }
    .sd-table-cards, .sd-table-cards tbody, .sd-table-cards tr, .sd-table-cards td { display: block; width: 100%; }
    .sd-table-cards { min-width: 0; }
    .sd-table-cards tr {
        border-bottom: 1px solid var(--sd-border-strong); padding: var(--sd-sp-3) var(--sd-sp-4);
    }
    .sd-table-cards tr:last-child { border-bottom: none; }
    .sd-table-cards td {
        display: flex; align-items: center; justify-content: space-between; gap: var(--sd-sp-3);
        padding: var(--sd-sp-2) 0; border-bottom: none; text-align: end;
    }
    .sd-table-cards td[data-label]::before {
        content: attr(data-label); color: var(--sd-text-secondary); font-size: var(--sd-fs-xs);
        font-weight: var(--sd-fw-bold); flex-shrink: 0; text-align: start;
    }
    .sd-table-cards .sd-table-actions { justify-content: flex-end; }
}

/* ==================== 8. الشارات والتنبيهات (Badges & Alerts) ==================== */
.sd-badge {
    display: inline-flex; align-items: center; gap: var(--sd-sp-1); padding: 0.2rem var(--sd-sp-3);
    border-radius: var(--sd-radius-full); font-size: var(--sd-fs-xs); font-weight: var(--sd-fw-bold);
    background: var(--sd-accent-soft); color: var(--sd-accent-light);
}
.sd-badge-success { background: var(--sd-success-soft); color: var(--sd-success); }
.sd-badge-warning { background: var(--sd-warning-soft); color: var(--sd-warning); }
.sd-badge-danger { background: var(--sd-danger-soft); color: var(--sd-danger); }
.sd-badge-info { background: var(--sd-info-soft); color: var(--sd-info); }
.sd-badge-neutral { background: var(--sd-bg-elevated-2); color: var(--sd-text-secondary); }
.sd-badge-dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; flex-shrink: 0; }

.sd-alert {
    display: flex; align-items: flex-start; gap: var(--sd-sp-3); padding: var(--sd-sp-4);
    border-radius: var(--sd-radius-md); border: 1px solid var(--sd-border); font-size: var(--sd-fs-sm);
}
.sd-alert-icon { flex-shrink: 0; font-size: var(--sd-fs-lg); margin-top: 0.1em; }
.sd-alert-success { background: var(--sd-success-soft); border-color: rgba(0, 230, 118, 0.25); color: var(--sd-success); }
.sd-alert-warning { background: var(--sd-warning-soft); border-color: rgba(255, 176, 32, 0.25); color: var(--sd-warning); }
.sd-alert-danger { background: var(--sd-danger-soft); border-color: rgba(255, 82, 82, 0.25); color: var(--sd-danger); }
.sd-alert-info { background: var(--sd-info-soft); border-color: rgba(41, 182, 246, 0.25); color: var(--sd-info); }

/* ==================== 9. النوافذ المنبثقة (Dialogs / Modals) ==================== */
.sd-modal-overlay {
    position: fixed; inset: 0; background: var(--sd-bg-overlay); backdrop-filter: blur(6px);
    display: flex; align-items: center; justify-content: center; padding: var(--sd-sp-5);
    z-index: var(--sd-z-modal); opacity: 0; visibility: hidden; transition: opacity 0.25s ease;
}
.sd-modal-overlay.is-open { opacity: 1; visibility: visible; }
.sd-modal {
    width: 100%; max-width: 460px; background: var(--sd-bg-elevated); border: 1px solid var(--sd-border-strong);
    border-radius: var(--sd-radius-xl); box-shadow: var(--sd-shadow-lg); padding: var(--sd-sp-8);
    max-height: calc(100dvh - 2 * var(--sd-sp-5)); overflow-y: auto; text-align: center;
    transform: translateY(16px) scale(0.97); transition: transform 0.25s ease;
}
.sd-modal-overlay.is-open .sd-modal { transform: translateY(0) scale(1); }
.sd-modal-icon {
    width: 64px; height: 64px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem; margin-inline: auto; margin-bottom: var(--sd-sp-5);
    background: var(--sd-warning-soft); color: var(--sd-warning);
}
.sd-modal-title { font-size: var(--sd-fs-lg); font-weight: var(--sd-fw-bold); margin-bottom: var(--sd-sp-2); }
.sd-modal-desc { color: var(--sd-text-secondary); font-size: var(--sd-fs-sm); line-height: var(--sd-lh-normal); margin-bottom: var(--sd-sp-6); }
.sd-modal-actions { display: flex; gap: var(--sd-sp-3); justify-content: center; flex-wrap: wrap; }
.sd-modal-close {
    position: absolute; inset-inline-end: var(--sd-sp-4); inset-block-start: var(--sd-sp-4);
    width: 34px; height: 34px; border-radius: 50%; border: none; background: var(--sd-bg-elevated-2);
    color: var(--sd-text-secondary); cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: background 0.2s ease, color 0.2s ease;
}
.sd-modal-close:hover { background: var(--sd-danger-soft); color: var(--sd-danger); }
.sd-modal { position: relative; }

/* ==================== 10. القوائم المنسدلة (Dropdowns) ==================== */
.sd-dropdown { position: relative; display: inline-block; }
.sd-dropdown-menu {
    position: absolute; inset-inline-end: 0; top: calc(100% + 6px); min-width: 200px;
    background: var(--sd-bg-elevated-2); border: 1px solid var(--sd-border-strong); border-radius: var(--sd-radius-md);
    box-shadow: var(--sd-shadow-md); padding: var(--sd-sp-2); z-index: var(--sd-z-dropdown);
    opacity: 0; visibility: hidden; transform: translateY(-6px); transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
}
.sd-dropdown-menu.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
.sd-dropdown-item {
    display: flex; align-items: center; gap: var(--sd-sp-2); width: 100%; padding: var(--sd-sp-2) var(--sd-sp-3);
    border-radius: var(--sd-radius-sm); background: none; border: none; color: var(--sd-text); font-size: var(--sd-fs-sm);
    text-align: start; cursor: pointer; text-decoration: none;
}
.sd-dropdown-item:hover { background: var(--sd-accent-soft); color: var(--sd-accent-light); }
.sd-dropdown-item.is-danger:hover { background: var(--sd-danger-soft); color: var(--sd-danger); }
.sd-dropdown-divider { height: 1px; background: var(--sd-border); margin: var(--sd-sp-2) 0; }

/* ==================== 11. الشريط الجانبي والعلوي (Sidebar / Navbar / Footer) ==================== */
.sd-navbar {
    position: sticky; top: 0; z-index: var(--sd-z-sticky); display: flex; align-items: center; justify-content: space-between;
    gap: var(--sd-sp-3); padding: var(--sd-sp-4) var(--sd-sp-6); background: rgba(10, 16, 24, 0.88);
    backdrop-filter: blur(16px); border-bottom: 1px solid var(--sd-border); flex-wrap: nowrap; min-width: 0;
}
.sd-navbar-links-wrap { min-width: 0; }
.sd-navbar-links { min-width: 0; }
.sd-dropdown { min-width: 0; }
.sd-dropdown > .sd-btn { max-width: min(260px, 32vw); overflow: hidden; text-overflow: ellipsis; }
.sd-navbar-brand {
    display: flex; align-items: center; gap: var(--sd-sp-2); font-weight: var(--sd-fw-black); font-size: var(--sd-fs-md);
    color: var(--sd-text); text-decoration: none; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    min-width: 0; flex-shrink: 1;
}
@media (max-width: 480px) {
    .sd-navbar { padding-inline: var(--sd-sp-3); gap: var(--sd-sp-2); }
    .sd-navbar-brand { font-size: var(--sd-fs-sm); }
}
.sd-navbar-links { display: flex; align-items: center; gap: var(--sd-sp-2); list-style: none; margin: 0; padding: 0; }
.sd-navbar-links a {
    display: flex; align-items: center; gap: var(--sd-sp-2); min-height: var(--sd-tap-min); padding-inline: var(--sd-sp-3);
    color: var(--sd-text-secondary); text-decoration: none; font-size: var(--sd-fs-sm); font-weight: var(--sd-fw-medium);
    border-radius: var(--sd-radius-md); transition: background 0.2s ease, color 0.2s ease;
}
.sd-navbar-links a:hover, .sd-navbar-links a.is-active { background: var(--sd-accent-soft); color: var(--sd-accent-light); }

.sd-sidebar { display: flex; flex-direction: column; gap: var(--sd-sp-1); padding: var(--sd-sp-4); background: var(--sd-bg-elevated); border-inline-end: 1px solid var(--sd-border); min-height: 100%; }
.sd-sidebar-item {
    display: flex; align-items: center; gap: var(--sd-sp-3); min-height: var(--sd-tap-min); padding-inline: var(--sd-sp-4);
    border-radius: var(--sd-radius-md); color: var(--sd-text-secondary); text-decoration: none; font-size: var(--sd-fs-sm); font-weight: var(--sd-fw-medium);
    transition: background 0.2s ease, color 0.2s ease;
}
.sd-sidebar-item:hover { background: var(--sd-bg-elevated-2); color: var(--sd-text); }
.sd-sidebar-item.is-active { background: var(--sd-accent-soft); color: var(--sd-accent-light); }

.sd-footer { border-top: 1px solid var(--sd-border); padding: var(--sd-sp-8) var(--sd-sp-6); text-align: center; color: var(--sd-text-muted); font-size: var(--sd-fs-xs); }

/* درج الجوال (Mobile Drawer) — يتوافق مع عقد app/static/js/nav.js: يبدّل صنف .active
   على #mobile-sidebar وينشئ .overlay بنفسه، هذا الملف يوفر فقط شكل الحالتين. */
.sd-mobile-drawer {
    position: fixed; inset-block: 0; inset-inline-end: 0; width: min(280px, 82vw);
    z-index: var(--sd-z-overlay);
    box-shadow: var(--sd-shadow-lg); overflow-y: auto; transform: translateX(110%); transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
/* inset-inline-end منطقي ويعتمد على اتجاه الصفحة (= left:0 في RTL)، لكن transform: translateX() فيزيائي دائماً بغض النظر عن dir. بدون هذا السطر، القائمة على صفحات RTL (كل صفحات الموقع) كانت تنزاح لليمين بدل اليسار وهي "مغلقة"، فيظل جزء منها ظاهراً دائماً فوق حافة الشاشة اليمنى (تراكب جزئي دائم مع المحتوى، حتى بدون فتح القائمة أصلاً) — وهذا هو السبب الفعلي وراء الخطأ 1 المبلّغ عنه. */
[dir="rtl"] .sd-mobile-drawer { transform: translateX(-110%); }
.sd-mobile-drawer.active { transform: translateX(0); }

@media (max-width: 600px) {
    .sd-modal-overlay { align-items: flex-end; padding: var(--sd-sp-3); }
    .sd-modal { max-height: calc(100dvh - var(--sd-sp-6)); padding: var(--sd-sp-6) var(--sd-sp-4); border-radius: var(--sd-radius-lg); }
}
.overlay {
    position: fixed; inset: 0; background: rgba(0, 0, 0, 0.55); z-index: calc(var(--sd-z-overlay) - 1);
    opacity: 0; pointer-events: none; transition: opacity 0.3s ease;
}
.overlay.active { opacity: 1; pointer-events: auto; }

/* ==================== 12. حالات النظام (System States) ==================== */
.sd-state {
    display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;
    padding: var(--sd-sp-12) var(--sd-sp-6); gap: var(--sd-sp-3);
}
.sd-state-icon { width: 72px; height: 72px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 2rem; margin-bottom: var(--sd-sp-2); }
.sd-state-title { font-size: var(--sd-fs-lg); font-weight: var(--sd-fw-bold); }
.sd-state-desc { color: var(--sd-text-secondary); font-size: var(--sd-fs-sm); max-width: 420px; line-height: var(--sd-lh-normal); }

.sd-state-empty .sd-state-icon,
.sd-state-no-results .sd-state-icon { background: var(--sd-bg-elevated-2); color: var(--sd-text-muted); }
.sd-state-success .sd-state-icon { background: var(--sd-success-soft); color: var(--sd-success); }
.sd-state-error .sd-state-icon { background: var(--sd-danger-soft); color: var(--sd-danger); }
.sd-state-permission-denied .sd-state-icon { background: var(--sd-danger-soft); color: var(--sd-danger); }
.sd-state-subscription-expired .sd-state-icon { background: var(--sd-warning-soft); color: var(--sd-warning); }
.sd-state-disabled .sd-state-icon { background: var(--sd-bg-elevated-2); color: var(--sd-text-muted); }
.sd-state-offline .sd-state-icon { background: var(--sd-info-soft); color: var(--sd-info); }

/* تحميل: دوّار */
.sd-spinner {
    width: 32px; height: 32px; border-radius: 50%; border: 3px solid var(--sd-border-strong);
    border-top-color: var(--sd-accent); animation: sd-spin 0.7s linear infinite;
}
@keyframes sd-spin { to { transform: rotate(360deg); } }
.sd-state-loading .sd-state-desc { margin-top: calc(-1 * var(--sd-sp-2)); }

/* تحميل هيكلي: Skeleton */
.sd-skeleton {
    background: linear-gradient(90deg, var(--sd-bg-elevated-2) 25%, var(--sd-bg-elevated) 50%, var(--sd-bg-elevated-2) 75%);
    background-size: 200% 100%; animation: sd-shimmer 1.4s ease-in-out infinite; border-radius: var(--sd-radius-sm);
}
@keyframes sd-shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
.sd-skeleton-text { height: 0.9em; margin-bottom: var(--sd-sp-2); }
.sd-skeleton-title { height: 1.4em; width: 40%; margin-bottom: var(--sd-sp-4); }
.sd-skeleton-avatar { width: 44px; height: 44px; border-radius: 50%; }
.sd-skeleton-card { height: 140px; border-radius: var(--sd-radius-lg); }

/* معطّل / غير متصل */
.sd-badge-offline { background: var(--sd-bg-elevated-2); color: var(--sd-text-muted); }

@media (prefers-reduced-motion: reduce) {
    .sd-app *, .sd-app *::before, .sd-app *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ==================== 13. شريط التنقل السفلي (Bottom Nav) ==================== */
.sd-bottom-nav {
    position: fixed;
    inset-inline: 0;
    inset-block-end: 0;
    z-index: var(--sd-z-bottom-nav);
    display: none;
    height: calc(var(--sd-bottom-nav-h) + env(safe-area-inset-bottom, 0px));
    padding-bottom: env(safe-area-inset-bottom, 0px);
    background: rgba(10, 16, 24, 0.94);
    backdrop-filter: blur(18px);
    border-top: 1px solid var(--sd-border-strong);
    grid-template-columns: repeat(5, 1fr);
    align-items: stretch;
}
.sd-bottom-nav__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    min-height: var(--sd-tap-min);
    color: var(--sd-text-muted);
    text-decoration: none;
    font-size: 0.68rem;
    font-weight: var(--sd-fw-medium);
    border: 0;
    background: transparent;
    cursor: pointer;
    transition: color 0.15s ease, background 0.15s ease;
}
.sd-bottom-nav__item i { font-size: 1.15rem; }
.sd-bottom-nav__item:hover,
.sd-bottom-nav__item.is-active {
    color: var(--sd-brass-bright);
    background: var(--sd-accent-soft);
}
.sd-bottom-nav__item:focus-visible {
    outline: 2px solid var(--sd-accent-light);
    outline-offset: -2px;
}
@media (max-width: 860px) {
    .sd-bottom-nav { display: grid; }
}

/* ==================== 14. شبكة المنشورات ==================== */
.sd-articles-hero {
    padding: var(--sd-sp-8) 0 var(--sd-sp-4);
    border-bottom: 1px solid var(--sd-border);
    margin-bottom: var(--sd-sp-6);
}
.sd-articles-hero h1 {
    font-family: var(--sd-font-display);
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    margin: 0 0 var(--sd-sp-2);
}
.sd-articles-featured {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 0;
    text-decoration: none;
    color: inherit;
    background: var(--sd-bg-elevated);
    border: 1px solid var(--sd-border);
    border-radius: var(--sd-radius-lg);
    overflow: hidden;
    margin-bottom: var(--sd-sp-8);
    transition: border-color 0.2s ease;
}
.sd-articles-featured:hover { border-color: var(--sd-brass); }
.sd-articles-featured__media {
    min-height: 260px;
    background:
        linear-gradient(135deg, rgba(74, 125, 149, 0.35), rgba(10, 16, 24, 0.9)),
        var(--sd-slate-2);
    background-size: cover;
    background-position: center;
    position: relative;
}
.sd-articles-featured__media img {
    width: 100%; height: 100%; object-fit: cover; display: block;
    min-height: 260px;
}
.sd-articles-featured__body { padding: var(--sd-sp-6); display: flex; flex-direction: column; justify-content: center; }
.sd-articles-featured__label {
    display: inline-flex; align-items: center; gap: var(--sd-sp-2);
    color: var(--sd-brass-bright); font-size: var(--sd-fs-sm); margin-bottom: var(--sd-sp-3);
}
.sd-articles-featured__title {
    font-family: var(--sd-font-display);
    font-size: clamp(1.35rem, 3vw, 1.9rem);
    margin: 0 0 var(--sd-sp-3); line-height: 1.35;
}
.sd-articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
    gap: var(--sd-sp-5);
}
.sd-article-card {
    display: flex; flex-direction: column;
    background: var(--sd-bg-elevated);
    border: 1px solid var(--sd-border);
    border-radius: var(--sd-radius-md);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s ease, transform 0.2s ease;
}
.sd-article-card:hover {
    border-color: var(--sd-mist);
    transform: translateY(-2px);
}
.sd-article-card__thumb {
    aspect-ratio: 16 / 9;
    background: linear-gradient(145deg, var(--sd-slate-2), var(--sd-ink));
    display: flex; align-items: center; justify-content: center;
    color: var(--sd-mist-soft); font-size: 1.6rem;
    overflow: hidden;
}
.sd-article-card__thumb img { width: 100%; height: 100%; object-fit: cover; }
.sd-article-card__body { padding: var(--sd-sp-4); flex: 1; display: flex; flex-direction: column; gap: var(--sd-sp-2); }
.sd-article-card__title {
    font-family: var(--sd-font-display);
    font-size: var(--sd-fs-md);
    margin: 0; line-height: 1.4;
    overflow-wrap: anywhere;
    word-break: break-word;
}
.sd-article-card__excerpt {
    color: var(--sd-text-secondary); font-size: var(--sd-fs-sm);
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    overflow: hidden; margin: 0; flex: 1;
}
.sd-article-card__meta {
    display: flex; align-items: center; justify-content: space-between;
    gap: var(--sd-sp-2); font-size: var(--sd-fs-xs); color: var(--sd-text-muted); margin-top: var(--sd-sp-2);
}
.sd-article-card__author { display: inline-flex; align-items: center; gap: var(--sd-sp-2); color: inherit; text-decoration: none; }
.sd-article-card__author img { width: 22px; height: 22px; border-radius: 50%; object-fit: cover; }
.sd-articles-discussed { display: flex; flex-direction: column; gap: var(--sd-sp-2); margin-bottom: var(--sd-sp-8); }
.sd-articles-discussed a {
    display: flex; align-items: center; gap: var(--sd-sp-3);
    padding: var(--sd-sp-3) var(--sd-sp-4);
    background: var(--sd-bg-elevated); border: 1px solid var(--sd-border);
    border-radius: var(--sd-radius-md); text-decoration: none; color: inherit;
}
.sd-articles-discussed a:hover { border-color: var(--sd-brass); }
.sd-articles-discussed__rank { color: var(--sd-brass); font-weight: var(--sd-fw-bold); font-variant-numeric: tabular-nums; min-width: 1.5rem; }
@media (max-width: 760px) {
    .sd-articles-featured { grid-template-columns: 1fr; }
    .sd-articles-featured__media, .sd-articles-featured__media img { min-height: 180px; }
}

.reader-page [hidden] { display: none !important; }

body.reader-page {
    margin: 0;
    overflow-x: hidden;
}
.reader-page {
    --reader-bg: #0d1117;
    --reader-surface: #121a26;
    --reader-surface-strong: #1a2433;
    --reader-text: #e8edf0;
    --reader-text-secondary: #a8b4c2;
    --reader-border: rgba(228, 233, 240, 0.12);
    --reader-accent: #d9bc74;
    --reader-accent-soft: rgba(217, 188, 116, 0.14);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    background: #0a1018;
    color: var(--reader-text);
    font-family: var(--sd-font);
    padding-bottom: env(safe-area-inset-bottom, 0px);
}
.reader-page *, .reader-page *::before, .reader-page *::after { box-sizing: border-box; }
.reader-page a { color: inherit; }
.reader-page button, .reader-page input { font: inherit; }
.reader-page button:focus-visible, .reader-page a:focus-visible, .reader-page input:focus-visible, .reader-page [tabindex]:focus-visible {
    outline: 2px solid var(--reader-accent);
    outline-offset: 2px;
}
.reader-skip-link {
    position: fixed;
    inset-inline-start: 1rem;
    inset-block-start: 0.75rem;
    z-index: 2000;
    transform: translateY(-180%);
    padding: 0.65rem 1rem;
    border-radius: var(--sd-radius-md);
    background: var(--reader-accent);
    color: #111;
    font-weight: var(--sd-fw-bold);
    text-decoration: none;
    transition: transform 0.15s ease;
}
.reader-skip-link:focus { transform: translateY(0); }
.read-header {
    position: sticky;
    inset-block-start: 0;
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    min-height: 64px;
    padding: 0.65rem max(1rem, env(safe-area-inset-left, 0px)) 0.65rem max(1rem, env(safe-area-inset-right, 0px));
    border-bottom: 1px solid var(--reader-border);
    background: rgba(9, 13, 20, 0.94);
    backdrop-filter: blur(14px);
    transition: transform 0.2s ease, opacity 0.2s ease;
}
.read-header.is-hidden { transform: translateY(-110%); opacity: 0; }
.read-header__brand {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    min-height: 44px;
    color: var(--reader-accent);
    font-size: 0.84rem;
    font-weight: var(--sd-fw-bold);
    text-decoration: none;
    white-space: nowrap;
}
.read-header__title {
    min-width: 0;
    flex: 1;
    overflow: hidden;
    color: var(--reader-text-secondary);
    font-size: 0.82rem;
    text-align: center;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.read-header__actions { display: flex; align-items: center; gap: 0.4rem; flex-shrink: 0; }
.read-hero {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 1.25rem;
    padding: 1.5rem max(1.25rem, env(safe-area-inset-left, 0px)) 1.5rem max(1.25rem, env(safe-area-inset-right, 0px));
    border-bottom: 1px solid var(--reader-border);
    background: var(--reader-surface);
}
.read-hero__cover, .read-hero__cover-placeholder {
    width: 120px;
    height: 160px;
    flex: 0 0 auto;
    border: 1px solid var(--reader-border);
    border-radius: var(--sd-radius-md);
    box-shadow: var(--sd-shadow-md);
}
.read-hero__cover { object-fit: cover; }
.read-hero__cover-placeholder { display: grid; place-items: center; color: var(--reader-text-secondary); background: var(--reader-surface-strong); font-size: 2.25rem; }
.read-hero__info { min-width: 0; flex: 1; display: flex; flex-direction: column; gap: 0.5rem; }
.read-hero__title { margin: 0; color: var(--reader-accent); font-family: var(--sd-font-display); font-size: 1.4rem; line-height: 1.4; }
.read-hero__author { color: var(--reader-text-secondary); font-size: 0.9rem; }
.read-hero__desc { max-width: 75ch; margin: 0; color: var(--reader-text-secondary); font-size: 0.86rem; line-height: 1.75; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3; overflow: hidden; }
.read-hero__actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.4rem; }
.reader-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    min-width: 44px;
    min-height: 44px;
    padding: 0.55rem 0.85rem;
    border: 1px solid var(--reader-border);
    border-radius: var(--sd-radius-md);
    background: transparent;
    color: var(--reader-text-secondary);
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}
.reader-button:hover:not(:disabled) { border-color: var(--reader-accent); color: var(--reader-accent); background: var(--reader-accent-soft); }
.reader-button:active:not(:disabled) { transform: translateY(1px); }
.reader-button:disabled { cursor: not-allowed; opacity: 0.42; }
.reader-button--icon { padding-inline: 0.65rem; }
.reader-button--primary { border-color: transparent; background: linear-gradient(135deg, var(--reader-accent), #c4a35a); color: #171106; font-weight: var(--sd-fw-bold); }
.reader-button--primary:hover:not(:disabled) { color: #171106; background: linear-gradient(135deg, var(--reader-accent), #c4a35a); box-shadow: 0 5px 16px rgba(217, 188, 116, 0.24); }
.reader-button--ghost { border-color: var(--reader-border); }
.reader-button--block { width: 100%; }
.hide-mobile { display: inline; }
.read-area { position: relative; min-height: 55vh; background: var(--reader-bg); }
.reader-loading, .reader-error {
    position: absolute;
    inset: 0;
    z-index: 4;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 0.85rem;
    padding: 2rem 1.25rem;
    background: var(--reader-bg);
    text-align: center;
}
.reader-loading p, .reader-error h2, .reader-error p { margin: 0; }
.reader-loading__icon, .reader-error__icon { display: grid; place-items: center; width: 56px; height: 56px; border-radius: 50%; color: var(--reader-accent); background: var(--reader-accent-soft); font-size: 1.5rem; }
.reader-error__icon { color: #e39a9a; background: rgba(196, 92, 92, 0.14); }
.reader-loading__track { width: min(260px, 100%); height: 6px; overflow: hidden; border-radius: 999px; background: var(--reader-surface-strong); }
.reader-loading__track span { display: block; width: 0; height: 100%; border-radius: inherit; background: var(--reader-accent); transition: width 0.18s ease; }
.reader-loading__track.is-indeterminate span { width: 38% !important; animation: reader-progress-indeterminate 1.15s ease-in-out infinite; }
@keyframes reader-progress-indeterminate { 0% { margin-inline-start: -38%; } 100% { margin-inline-start: 100%; } }
.reader-loading__label { color: var(--reader-text-secondary); font-size: 0.82rem; }
.reader-canvas-wrap {
    position: relative;
    z-index: 1;
    overflow: auto;
    overscroll-behavior: contain;
    overscroll-behavior-inline: contain;
    touch-action: pan-y;
    padding: 1.25rem max(1rem, env(safe-area-inset-left, 0px)) 7.5rem max(1rem, env(safe-area-inset-right, 0px));
    background: var(--reader-bg);
    scrollbar-gutter: stable;
}
.reader-canvas-wrap.is-rendering { cursor: progress; }
.reader-canvas { display: block; max-width: none; height: auto; margin-inline: auto; border: 1px solid rgba(255,255,255,0.08); background: #fff; box-shadow: 0 8px 28px rgba(0,0,0,0.32); transition: filter 0.2s ease; }
html[data-reader-theme="light"] .reader-canvas { filter: none; }
html[data-reader-theme="dark"] .reader-canvas { filter: invert(0.9) hue-rotate(180deg) saturate(1.08); }
html[data-reader-theme="sepia"] .reader-canvas { filter: sepia(0.42) saturate(1.18) brightness(1.03); }
.read-progress { position: fixed; inset-inline: 0; inset-block-start: 0; z-index: 900; height: 3px; background: rgba(255,255,255,0.06); }
.read-progress__bar { display: block; width: 0; height: 100%; background: var(--reader-accent); box-shadow: 0 0 8px rgba(217,188,116,0.42); transition: width 0.18s ease; }
.reader-toolbar {
    position: fixed;
    inset-inline: 0;
    inset-block-end: calc(env(safe-area-inset-bottom, 0px) + 0.75rem);
    z-index: 600;
    display: flex;
    justify-content: center;
    gap: 0.45rem;
    max-width: calc(100vw - 1rem);
    margin-inline: auto;
    padding: 0.4rem;
    overflow-x: auto;
    border: 1px solid var(--reader-border);
    border-radius: 999px;
    background: rgba(15, 22, 33, 0.96);
    box-shadow: var(--sd-shadow-md);
    backdrop-filter: blur(14px);
    transition: transform 0.2s ease, opacity 0.2s ease;
}
.reader-toolbar__group { display: flex; align-items: center; gap: 0.28rem; flex-shrink: 0; }
.reader-toolbar__group + .reader-toolbar__group { padding-inline-start: 0.35rem; border-inline-start: 1px solid var(--reader-border); }
.reader-toolbar .reader-button { min-width: 44px; min-height: 44px; padding-inline: 0.65rem; border: 0; border-radius: 999px; background: transparent; }
.reader-toolbar .reader-button:hover:not(:disabled) { background: var(--reader-accent-soft); }
.reader-toolbar__zoom { min-width: 3.1rem; color: var(--reader-text-secondary); font-size: 0.78rem; font-variant-numeric: tabular-nums; text-align: center; }
.reader-page-picker { display: flex; align-items: center; gap: 0.3rem; color: var(--reader-text-secondary); font-size: 0.76rem; white-space: nowrap; }
.reader-page-picker input { width: 3.25rem; min-height: 44px; padding-inline: 0.4rem; border: 1px solid var(--reader-border); border-radius: 999px; background: var(--reader-surface-strong); color: var(--reader-text); text-align: center; font-variant-numeric: tabular-nums; }
.reader-page-picker strong { min-width: 1.2rem; color: var(--reader-text); text-align: end; }
.reader-page.reader-immersive .read-header, .reader-page.reader-immersive .reader-toolbar { transform: translateY(-110%); opacity: 0; pointer-events: none; }
.reader-page.reader-immersive .read-header { transform: translateY(-110%); }
.reader-page.reader-immersive .reader-toolbar { transform: translateY(110%); }
.reader-outline {
    position: fixed;
    inset-block: 0;
    inset-inline-end: 0;
    z-index: 700;
    width: min(360px, 92vw);
    padding: 1rem;
    overflow-y: auto;
    border-inline-start: 1px solid var(--reader-border);
    background: var(--reader-surface);
    box-shadow: var(--sd-shadow-lg);
    transform: translateX(105%);
    transition: transform 0.22s ease;
}
[dir="rtl"] .reader-outline { transform: translateX(-105%); }
.reader-outline.is-open { transform: translateX(0); }
.reader-outline__header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.reader-outline__header h2 { margin: 0; color: var(--reader-accent); font-family: var(--sd-font-display); font-size: 1.15rem; }
.reader-outline__list, .reader-outline__children { margin: 0; padding: 0; list-style: none; }
.reader-outline__children { margin-inline-start: 0.85rem; border-inline-start: 1px solid var(--reader-border); padding-inline-start: 0.65rem; }
.reader-outline__item { display: block; width: 100%; min-height: 44px; padding: 0.65rem 0.5rem; border: 0; border-radius: var(--sd-radius-sm); background: transparent; color: var(--reader-text-secondary); text-align: start; text-decoration: none; cursor: pointer; }
.reader-outline__item:hover { color: var(--reader-accent); background: var(--reader-accent-soft); }
.reader-sheet-overlay {
    position: fixed;
    inset: 0;
    z-index: 800;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 0;
    background: rgba(3, 6, 10, 0.62);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}
.reader-sheet-overlay.is-open { opacity: 1; visibility: visible; }
.reader-sheet {
    width: 100%;
    max-height: min(88dvh, 620px);
    overflow-y: auto;
    padding: 1rem 1rem calc(1rem + env(safe-area-inset-bottom, 0px));
    border-radius: var(--sd-radius-lg) var(--sd-radius-lg) 0 0;
    background: var(--reader-surface);
    box-shadow: var(--sd-shadow-lg);
    transform: translateY(20px);
    transition: transform 0.2s ease;
}
.reader-sheet-overlay.is-open .reader-sheet { transform: translateY(0); }
.reader-sheet__header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.reader-sheet__header h2 { margin: 0; color: var(--reader-accent); font-family: var(--sd-font-display); font-size: 1.25rem; }
.reader-sheet__body { display: flex; flex-direction: column; gap: 1.15rem; }
.reader-preference { margin: 0; padding: 0; border: 0; }
.reader-preference legend { width: 100%; margin-bottom: 0.65rem; color: var(--reader-text); font-size: 0.9rem; font-weight: var(--sd-fw-medium); }
.reader-preference output { float: inline-end; color: var(--reader-accent); font-variant-numeric: tabular-nums; }
.reader-preference__control { display: flex; align-items: center; gap: 0.55rem; }
.reader-preference__control input[type="range"] { flex: 1; min-width: 0; accent-color: var(--reader-accent); }
.reader-theme-picker { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.45rem; }
.reader-theme-picker button { display: flex; align-items: center; justify-content: center; gap: 0.35rem; min-height: 44px; padding: 0.5rem 0.35rem; border: 1px solid var(--reader-border); border-radius: var(--sd-radius-md); background: var(--reader-surface-strong); color: var(--reader-text-secondary); cursor: pointer; }
.reader-theme-picker button.is-active { border-color: var(--reader-accent); color: var(--reader-accent); background: var(--reader-accent-soft); }
.reader-sr-only { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }
.reader-modal-open { overflow: hidden; }
.ai-panel-overlay { position: fixed; inset: 0; z-index: 950; background: rgba(3,6,10,0.55); opacity: 0; visibility: hidden; transition: opacity 0.22s ease, visibility 0.22s ease; }
.ai-panel-overlay.is-open { opacity: 1; visibility: visible; }
.ai-panel-drawer { position: fixed; inset-block: 0; inset-inline-end: 0; z-index: 960; display: flex; flex-direction: column; width: min(420px, 94vw); border-inline-start: 1px solid var(--reader-border); background: var(--reader-surface); box-shadow: var(--sd-shadow-lg); transform: translateX(105%); transition: transform 0.22s ease; }
[dir="rtl"] .ai-panel-drawer { transform: translateX(-105%); }
.ai-panel-overlay.is-open .ai-panel-drawer { transform: translateX(0); }
.ai-panel-drawer__header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 1.1rem; border-bottom: 1px solid var(--reader-border); }
.ai-panel-drawer__header h3 { margin: 0; color: var(--reader-accent); font-family: var(--sd-font-display); font-size: 1.1rem; }
.ai-panel-drawer__body { flex: 1; gap: 0.75rem; padding: 1rem 1.1rem; overflow-y: auto; display: flex; flex-direction: column; }
.ai-quick-actions { display: flex; flex-direction: column; gap: 0.45rem; }
.ai-quick-actions .reader-button { width: 100%; justify-content: flex-start; }
.ai-panel-drawer__footer { padding: 0.8rem 1.1rem; border-top: 1px solid var(--reader-border); }
.ai-input-row { display: flex; gap: 0.5rem; }
.ai-input-row input { min-width: 0; flex: 1; min-height: 44px; padding-inline: 0.8rem; border: 1px solid var(--reader-border); border-radius: var(--sd-radius-md); background: var(--reader-bg); color: var(--reader-text); }
.ai-input-row input:focus { outline: 2px solid var(--reader-accent); outline-offset: 2px; }
.ai-chat-bubble { max-width: 100%; padding: 0.75rem 0.9rem; border-radius: var(--sd-radius-md); font-size: 0.86rem; line-height: 1.75; overflow-wrap: anywhere; white-space: pre-wrap; }
.ai-chat-bubble.user { align-self: flex-end; border: 1px solid rgba(74,125,149,0.4); background: rgba(74,125,149,0.22); }
.ai-chat-bubble.assistant { align-self: flex-start; border: 1px solid var(--reader-border); background: var(--reader-surface-strong); }
.ai-skeleton { display: block; width: 82%; height: 10px; margin-bottom: 0.5rem; border-radius: 999px; background: var(--reader-surface-strong); animation: reader-pulse 1.3s ease-in-out infinite; }
.ai-skeleton:nth-child(2) { width: 65%; }
.ai-skeleton:nth-child(3) { width: 48%; margin-bottom: 0; }
@keyframes reader-pulse { 50% { opacity: 0.42; } }
@media (max-width: 767px) {
    .hide-mobile { display: none; }
    .read-header { min-height: 58px; padding-inline: max(0.75rem, env(safe-area-inset-left, 0px)) max(0.75rem, env(safe-area-inset-right, 0px)); }
    .read-header__title { display: none; }
    .read-hero { flex-direction: column; align-items: center; padding-inline: max(1rem, env(safe-area-inset-left, 0px)) max(1rem, env(safe-area-inset-right, 0px)); text-align: center; }
    .read-hero__cover, .read-hero__cover-placeholder { width: 132px; height: 176px; }
    .read-hero__actions { justify-content: center; }
    .reader-toolbar { inset-block-end: calc(env(safe-area-inset-bottom, 0px) + 0.55rem); border-radius: 18px; }
    .reader-toolbar__group + .reader-toolbar__group { padding-inline-start: 0.25rem; }
    .reader-page-picker { gap: 0.2rem; font-size: 0.7rem; }
    .reader-page-picker input { width: 2.9rem; }
    .reader-canvas-wrap { padding-block-start: 1rem; padding-block-end: 7.8rem; }
    .reader-outline { width: min(360px, 94vw); }
}
@media (max-width: 479px) {
    .read-header__brand { font-size: 0.78rem; }
    .read-header__actions { gap: 0.25rem; }
    .read-header__actions .reader-button { padding-inline: 0.55rem; }
    .read-hero { gap: 0.9rem; padding-block: 1.15rem; }
    .read-hero__cover, .read-hero__cover-placeholder { width: 112px; height: 150px; }
    .read-hero__title { font-size: 1.2rem; }
    .read-hero__desc { -webkit-line-clamp: 2; }
    .reader-toolbar { gap: 0.2rem; flex-wrap: wrap; justify-content: center; overflow: visible; padding-inline: 0.3rem; row-gap: 0.35rem; }
    .reader-toolbar__group { flex: 1 1 auto; justify-content: center; }
    .reader-toolbar__group + .reader-toolbar__group { padding-inline-start: 0; border-inline-start: 0; }
    .reader-toolbar .reader-button { min-width: 44px; padding-inline: 0.5rem; }
    .reader-toolbar__zoom { min-width: 2.7rem; font-size: 0.72rem; }
    .reader-page-picker strong { min-width: 1rem; }
    .reader-sheet { padding-inline: 0.85rem; }
}
@media (max-width: 374px) {
    .read-header { gap: 0.4rem; padding-inline: max(0.55rem, env(safe-area-inset-left, 0px)) max(0.55rem, env(safe-area-inset-right, 0px)); }
    .read-header__actions .reader-button { min-width: 42px; }
    .read-hero__actions .reader-button { flex: 1 1 145px; }
    .reader-toolbar__group { gap: 0.12rem; }
    .reader-toolbar .reader-button { min-width: 44px; }
    .reader-page-picker input { width: 2.65rem; }
}
@media (min-width: 768px) {
    .read-hero { padding-block: 2rem; }
    .reader-canvas-wrap { padding-block: 2rem 9rem; }
    .reader-toolbar { max-width: 920px; }
}
@media (prefers-reduced-motion: reduce) {
    .reader-page *, .reader-page *::before, .reader-page *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}



/* Reader refinement layer — responsive hardening */
.reader-page {
    color-scheme: dark;
    -webkit-text-size-adjust: 100%;
    text-rendering: optimizeLegibility;
}
.reader-page:has(.reader-canvas-wrap) {
    min-height: 100svh;
}
.read-header,
.reader-toolbar,
.ai-panel-drawer,
.reader-sheet,
.reader-outline {
    -webkit-backdrop-filter: blur(14px);
}
.read-hero__info { overflow-wrap: anywhere; }
.reader-canvas-wrap {
    min-height: min(70vh, 980px);
    min-height: min(70svh, 980px);
    contain: layout paint;
}
.reader-canvas {
    width: auto;
    max-width: none;
    image-rendering: auto;
}
.reader-toolbar {
    padding-inline: max(0.4rem, env(safe-area-inset-left, 0px)) max(0.4rem, env(safe-area-inset-right, 0px));
}
.reader-toolbar__group { min-width: max-content; }
.reader-page-picker input::-webkit-inner-spin-button,
.reader-page-picker input::-webkit-outer-spin-button { margin: 0; }
.ai-panel-drawer__body,
.reader-sheet,
.reader-outline { overscroll-behavior: contain; }

@media (max-width: 767px) {
    .read-header { position: sticky; }
    .read-header__brand { flex: 0 0 auto; }
    .read-header__actions { min-width: 0; }
    .read-header__actions .reader-button { min-width: 44px; }
    .read-hero__info { width: min(100%, 680px); }
    .read-hero__actions { width: 100%; max-width: 430px; }
    .read-hero__actions .reader-button { flex: 1 1 150px; }
    .reader-canvas-wrap {
        min-height: calc(100svh - 58px);
        padding-inline: max(0.55rem, env(safe-area-inset-left, 0px)) max(0.55rem, env(safe-area-inset-right, 0px));
        padding-bottom: calc(8rem + env(safe-area-inset-bottom, 0px));
    }
    .reader-toolbar {
        max-width: calc(100vw - 0.75rem);
        justify-content: flex-start;
        flex-wrap: nowrap;
        overflow-x: auto;
        overflow-y: hidden;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
    }
    .reader-toolbar::-webkit-scrollbar { display: none; }
    .reader-toolbar__group { flex: 0 0 auto; }
    .reader-toolbar__group + .reader-toolbar__group { border-inline-start: 1px solid var(--reader-border); }
    .reader-toolbar .reader-button { flex: 0 0 44px; }
    .reader-sheet { max-height: min(90svh, 680px); }
    .ai-panel-drawer { width: min(440px, 100vw); }
}

@media (max-width: 479px) {
    .read-header { min-height: 54px; }
    .read-header__brand { font-size: 0.75rem; }
    .read-header__actions .reader-button { min-width: 42px; padding-inline: 0.5rem; }
    .read-hero__cover, .read-hero__cover-placeholder { width: 108px; height: 144px; }
    .read-hero__title { font-size: clamp(1.08rem, 5vw, 1.25rem); }
    .read-hero__desc { font-size: 0.82rem; }
    .reader-canvas-wrap { padding-top: 0.7rem; }
    .reader-toolbar { bottom: calc(env(safe-area-inset-bottom, 0px) + 0.45rem); }
    .reader-page-picker { font-size: 0.68rem; }
    .reader-page-picker input { width: 2.65rem; }
    .ai-panel-drawer__header { padding-inline: 0.85rem; }
    .ai-panel-drawer__body { padding-inline: 0.85rem; }
    .ai-panel-drawer__footer { padding-inline: 0.85rem; }
}

@media (max-width: 359px) {
    .read-header__actions .reader-button { min-width: 40px; padding-inline: 0.4rem; }
    .read-hero { padding-inline: 0.7rem; }
    .read-hero__cover, .read-hero__cover-placeholder { width: 96px; height: 128px; }
    .read-hero__actions .reader-button { flex-basis: 100%; }
    .reader-toolbar { max-width: calc(100vw - 0.5rem); }
}

@media (min-width: 768px) {
    .read-hero { width: min(100%, 1180px); margin-inline: auto; border-inline: 1px solid var(--reader-border); }
    .read-area { min-height: 60vh; }
    .reader-canvas-wrap { min-height: 65vh; }
}

@media (min-width: 1440px) {
    .read-header { padding-inline: max(1.5rem, calc((100vw - 1280px) / 2)); }
    .read-hero { padding-inline: 2.5rem; }
    .reader-canvas-wrap { padding-inline: 2rem; }
}

@media (prefers-reduced-motion: reduce) {
    .reader-page .reader-toolbar,
    .reader-page .read-header,
    .reader-page .ai-panel-drawer,
    .reader-page .reader-sheet,
    .reader-page .reader-outline { transition: none !important; }
}