:root {
    --primary-color: #7c3aed;
    --primary-dark: #5b21b6;
    --secondary-color: #4f46e5;

    --bg-color: #f5f3ff;
    --surface-color: rgba(255, 255, 255, 0.82);
    --surface-solid: #ffffff;

    --text-main: #24143f;
    --text-muted: #6b6480;

    --border-color: rgba(124, 58, 237, 0.14);
    --danger-color: #dc2626;

    --radius-sm: 12px;
    --radius: 20px;
    --radius-lg: 26px;

    --shadow-sm: 0 8px 24px rgba(76, 29, 149, 0.08);
    --shadow-md: 0 18px 45px rgba(76, 29, 149, 0.12);
    --shadow-lg: 0 25px 60px rgba(76, 29, 149, 0.16);

    --backdrop: blur(18px);
}

/* ================================
   الأساس
================================ */

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        sans-serif;
}

html {
    min-height: 100%;
}

body {
    min-height: 100vh;
    background:
        radial-gradient(
            circle at top right,
            rgba(196, 181, 253, 0.55),
            transparent 34%
        ),
        radial-gradient(
            circle at bottom left,
            rgba(129, 140, 248, 0.28),
            transparent 36%
        ),
        linear-gradient(135deg, #faf9ff 0%, #f1edff 100%);
    color: var(--text-main);
    line-height: 1.5;
    padding-bottom: 90px;
}

/* ================================
   الهيدر
================================ */

.app-header {
    position: sticky;
    top: 0;
    z-index: 100;

    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 12px 16px;

    background:
        linear-gradient(
            135deg,
            #7c3aed 0%,
            #6c4ab6 48%,
            #4f46e5 100%
        );

    color: #fff;

    border-bottom: 1px solid rgba(255, 255, 255, 0.18);

    box-shadow:
        0 8px 25px rgba(76, 29, 149, 0.18);
}

.brand {
    display: flex;
    align-items: center;
}

.brand span {
    font-size: 1.22rem;
    font-weight: 800;
    letter-spacing: -0.3px;
}

.app-header .brand span {
    color: #fff;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.app-header .nav-home-btn,
.app-header #userNameButton,
.app-header #identityEditor {
    display: none !important;
}

/* ================================
   المستخدم والجلسة
================================ */

.session-user-box {
    display: flex;
    align-items: center;
    gap: 7px;
}

.session-user-name {
    max-width: 110px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;

    font-size: 0.86rem;
    font-weight: 700;
    color: #fff;
}

.session-logout-button {
    padding: 6px 10px;

    border: 1px solid rgba(255, 255, 255, 0.34);
    border-radius: 20px;

    background: rgba(255, 255, 255, 0.13);
    color: #fff;

    font-size: 0.78rem;
    font-weight: 600;

    cursor: pointer;

    transition:
        background 0.2s ease,
        transform 0.2s ease;
}

.session-logout-button:hover {
    background: rgba(255, 255, 255, 0.22);
}

.session-logout-button:active {
    transform: scale(0.97);
}

.session-logout-button:disabled {
    opacity: 0.6;
    cursor: wait;
}

/* ================================
   الحاوية
================================ */

.container {
    width: min(600px, 100%);
    margin: 20px auto;
    padding: 0 12px;
}

/* ================================
   زر الرجوع
================================ */

.back-btn {
    padding: 7px 13px;

    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 16px;

    background: rgba(255, 255, 255, 0.12);
    color: #fff;

    cursor: pointer;
    font-size: 0.86rem;
    font-weight: 600;

    transition:
        background 0.2s ease,
        transform 0.2s ease;
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.back-btn:active {
    transform: scale(0.97);
}

/* ================================
   لوحة النشر
================================ */

.composer {
    position: fixed;

    left: 0;
    right: 0;
    bottom: 0;

    width: min(600px, 100%);
    margin: 0 auto;

    padding: 18px;

    background: rgba(255, 255, 255, 0.92);

    border: 1px solid var(--border-color);
    border-bottom: none;

    border-radius: 24px 24px 0 0;

    box-shadow:
        0 -15px 45px rgba(76, 29, 149, 0.16);

    backdrop-filter: var(--backdrop);
    -webkit-backdrop-filter: var(--backdrop);

    z-index: 1000;

    transform: translateY(110%);
    transition: transform 0.28s ease;

    max-height: 84vh;
    overflow-y: auto;
}

.composer.is-open {
    transform: translateY(0);
}

body.composer-open {
    overflow: hidden;
}

.composer-user {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.user-avatar {
    width: 38px;
    height: 38px;

    display: flex;
    align-items: center;
    justify-content: center;

    flex: 0 0 auto;

    border-radius: 50%;

    background:
        linear-gradient(
            135deg,
            var(--primary-color),
            var(--secondary-color)
        );

    color: #fff;

    font-weight: 800;
    font-size: 0.95rem;

    box-shadow:
        0 6px 16px rgba(124, 58, 237, 0.2);
}

.composer textarea {
    width: 100%;
    min-height: 100px;

    padding: 13px 14px;

    border: 1px solid var(--border-color);
    border-radius: 16px;

    background: rgba(248, 247, 255, 0.9);
    color: var(--text-main);

    outline: none;
    resize: none;

    font-size: 0.96rem;
    line-height: 1.7;

    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.composer textarea:focus {
    border-color: rgba(124, 58, 237, 0.45);

    box-shadow:
        0 0 0 4px rgba(124, 58, 237, 0.08);
}

.composer-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: 10px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.composer-tools {
    display: flex;
    align-items: center;
    gap: 7px;
    flex-wrap: wrap;
}

.composer-actions button,
.composer-actions select {
    padding: 8px 12px;

    border: 1px solid var(--border-color);
    border-radius: 14px;

    background: rgba(255, 255, 255, 0.9);
    color: var(--text-main);

    cursor: pointer;
    font-size: 0.84rem;

    transition:
        background 0.2s ease,
        transform 0.2s ease;
}

.composer-actions button:hover,
.composer-actions select:hover {
    background: #fff;
}

.composer-actions button:active {
    transform: scale(0.97);
}

#publishButton {
    border: none;

    background:
        linear-gradient(
            135deg,
            var(--primary-color),
            var(--secondary-color)
        );

    color: #fff;

    font-weight: 800;

    padding-left: 18px;
    padding-right: 18px;

    box-shadow:
        0 7px 18px rgba(99, 52, 190, 0.2);
}

#publishButton:disabled {
    opacity: 0.6;
    cursor: wait;
}

/* ================================
   زر النشر العائم
================================ */

.composer-toggle {
    position: fixed;

    left: 50%;
    bottom: 18px;

    transform: translateX(-50%);

    width: 58px;
    height: 58px;

    display: flex;
    align-items: center;
    justify-content: center;

    border: none;
    border-radius: 50%;

    background:
        linear-gradient(
            135deg,
            var(--primary-color),
            var(--secondary-color)
        );

    color: #fff;

    font-size: 31px;
    font-weight: 400;
    line-height: 1;

    cursor: pointer;

    box-shadow:
        0 10px 28px rgba(76, 29, 149, 0.28);

    z-index: 1001;

    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.composer-toggle:hover {
    transform: translateX(-50%) translateY(-2px);

    box-shadow:
        0 14px 32px rgba(76, 29, 149, 0.32);
}

.composer-toggle:active {
    transform: translateX(-50%) scale(0.94);
}

/* ================================
   تبويبات الخلاصة
================================ */

.feed-tabs {
    display: flex;
    gap: 7px;

    margin-bottom: 18px;
    padding-bottom: 3px;

    overflow-x: auto;

    scrollbar-width: none;
}

.feed-tabs::-webkit-scrollbar {
    display: none;
}

.feed-tab {
    flex: 0 0 auto;

    padding: 8px 14px;

    border: 1px solid var(--border-color);
    border-radius: 22px;

    background: rgba(255, 255, 255, 0.76);

    color: var(--text-muted);

    cursor: pointer;

    font-size: 0.84rem;
    font-weight: 600;

    white-space: nowrap;

    transition:
        background 0.2s ease,
        color 0.2s ease,
        transform 0.2s ease;
}

.feed-tab:hover {
    background: #fff;
}

.feed-tab:active {
    transform: scale(0.97);
}

.feed-tab.active {
    border-color: transparent;

    background:
        linear-gradient(
            135deg,
            var(--primary-color),
            var(--secondary-color)
        );

    color: #fff;

    box-shadow:
        0 7px 18px rgba(99, 52, 190, 0.16);
}

/* ================================
   المنشورات
================================ */

.post-card {
    margin-bottom: 14px;
    padding: 16px;

    background: var(--surface-color);

    border: 1px solid var(--border-color);
    border-radius: var(--radius);

    box-shadow: var(--shadow-sm);

    backdrop-filter: var(--backdrop);
    -webkit-backdrop-filter: var(--backdrop);
}

/* ================================
   اختيار الخلفية
================================ */

.bg-picker {
    display: flex;
    align-items: center;
    gap: 7px;

    margin: 9px 0;
    padding: 8px;

    background: rgba(248, 247, 255, 0.9);

    border: 1px solid var(--border-color);
    border-radius: 14px;
}

.bg-opt {
    width: 30px;
    height: 30px;

    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 50%;

    cursor: pointer;

    box-shadow:
        0 2px 6px rgba(0, 0, 0, 0.08);
}

.bg-opt[data-bg=""] {
    width: auto;

    padding: 0 9px;

    border-radius: 9px;

    background: #fff;

    font-size: 0.7rem;

    display: flex;
    align-items: center;
    justify-content: center;
}

/* ================================
   التعليقات
================================ */

.comments-section {
    margin-top: 20px;
    padding: 16px;

    background: var(--surface-color);

    border: 1px solid var(--border-color);
    border-radius: var(--radius);

    box-shadow: var(--shadow-sm);

    backdrop-filter: var(--backdrop);
    -webkit-backdrop-filter: var(--backdrop);
}

.comments-section h3 {
    margin-bottom: 12px;
    font-size: 1.05rem;
}

.comment-box {
    margin-top: 10px;
    margin-bottom: 18px;
}

.comment-box textarea {
    width: 100%;
    min-height: 78px;

    padding: 11px 12px;

    border: 1px solid var(--border-color);
    border-radius: 14px;

    background: rgba(248, 247, 255, 0.9);

    outline: none;
    resize: none;

    font-size: 0.92rem;
}

.comment-box textarea:focus {
    border-color: rgba(124, 58, 237, 0.45);

    box-shadow:
        0 0 0 4px rgba(124, 58, 237, 0.08);
}

.comment-box button {
    margin-top: 7px;

    padding: 8px 15px;

    border: none;
    border-radius: 13px;

    background:
        linear-gradient(
            135deg,
            var(--primary-color),
            var(--secondary-color)
        );

    color: #fff;

    cursor: pointer;

    font-weight: 700;

    box-shadow:
        0 6px 16px rgba(99, 52, 190, 0.16);
}

/* ================================
   صفحات المصادقة
================================ */

.auth-page {
    min-height: 100vh;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 24px 16px;
}

.auth-card {
    width: min(420px, 100%);

    padding: 28px 22px;

    background: rgba(255, 255, 255, 0.84);

    border: 1px solid rgba(124, 58, 237, 0.14);
    border-radius: 26px;

    box-shadow: var(--shadow-lg);

    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
}

.auth-card h1 {
    margin-bottom: 5px;

    color: var(--primary-color);

    font-size: 2rem;
    font-weight: 900;

    text-align: center;
}

.auth-subtitle {
    margin-bottom: 24px;

    color: var(--text-muted);

    text-align: center;
    font-size: 0.92rem;
}

.auth-card form {
    display: flex;
    flex-direction: column;
}

.auth-card label {
    margin-bottom: 6px;

    color: var(--text-main);

    font-size: 0.84rem;
    font-weight: 700;
}

.auth-card input {
    width: 100%;

    margin-bottom: 14px;
    padding: 12px 13px;

    border: 1px solid var(--border-color);
    border-radius: 14px;

    background: rgba(250, 249, 255, 0.95);
    color: var(--text-main);

    outline: none;

    font-size: 0.94rem;

    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.auth-card input:focus {
    border-color: rgba(124, 58, 237, 0.5);

    box-shadow:
        0 0 0 4px rgba(124, 58, 237, 0.08);
}

.auth-card form button {
    width: 100%;

    margin-top: 4px;
    padding: 11px 14px;

    border: none;
    border-radius: 15px;

    background:
        linear-gradient(
            135deg,
            var(--primary-color),
            var(--secondary-color)
        );

    color: #fff;

    cursor: pointer;

    font-size: 0.94rem;
    font-weight: 800;

    box-shadow:
        0 9px 22px rgba(99, 52, 190, 0.2);

    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.auth-card form button:hover {
    box-shadow:
        0 12px 26px rgba(99, 52, 190, 0.25);
}

.auth-card form button:active {
    transform: scale(0.98);
}

.auth-card > button {
    width: 100%;

    margin-top: 12px;
    padding: 9px 12px;

    border: 1px solid var(--border-color);
    border-radius: 14px;

    background: rgba(255, 255, 255, 0.72);
    color: var(--primary-dark);

    cursor: pointer;

    font-size: 0.86rem;
    font-weight: 700;
}

.auth-card hr {
    margin: 20px 0;

    border: none;
    border-top: 1px solid var(--border-color);
}

#loginMessage,
#registerMessage,
#resetPasswordMessage {
    min-height: 22px;

    margin-top: 10px;

    color: var(--text-muted);

    text-align: center;

    font-size: 0.84rem;
}

/* ================================
   حالات عامة
================================ */

.hidden {
    display: none !important;
}

button,
select,
input,
textarea {
    font: inherit;
}

button:focus-visible,
select:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 3px solid rgba(124, 58, 237, 0.2);
    outline-offset: 2px;
}

/* ================================
   إحصائيات الإدارة
   الحفاظ على التوافق
================================ */

.admin-stats-grid {
    display: flex;
    gap: 10px;

    margin-bottom: 15px;

    flex-wrap: wrap;
}

.admin-stats-card {
    flex: 1;

    padding: 12px;

    background: #fff;

    border: 1px solid var(--border-color);
    border-radius: 14px;

    text-align: center;
}

.admin-tabs {
    display: flex;
    gap: 8px;

    margin-bottom: 15px;
}

.admin-tab-btn {
    padding: 7px 12px;

    cursor: pointer;

    background: #fff;

    border: 1px solid var(--border-color);
    border-radius: 10px;
}

.admin-tab-btn.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

.admin-link {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 0.9rem;
}

/* ================================
   الهاتف
================================ */

@media (max-width: 480px) {

    body {
        padding-bottom: 82px;
    }

    .app-header {
        padding: 10px 12px;
    }

    .brand span {
        font-size: 1.08rem;
    }

    .session-user-box {
        gap: 5px;
    }

    .session-user-name {
        max-width: 78px;
        font-size: 0.78rem;
    }

    .session-logout-button {
        padding: 5px 8px;
        font-size: 0.73rem;
    }

    .container {
        margin-top: 14px;
        padding: 0 10px;
    }

    .composer {
        padding: 14px;

        border-radius: 20px 20px 0 0;

        max-height: 88vh;
    }

    .composer-toggle {
        width: 54px;
        height: 54px;

        bottom: 15px;

        font-size: 29px;
    }

    .auth-page {
        padding: 18px 12px;
    }

    .auth-card {
        padding: 24px 18px;
        border-radius: 22px;
    }

    .auth-card h1 {
        font-size: 1.8rem;
    }
}

/* ================================
   الوضع الداكن
================================ */

@media (prefers-color-scheme: dark) {

    :root {
        --primary-color: #a855f7;
        --primary-dark: #c084fc;
        --secondary-color: #6366f1;

        --bg-color: #090d16;
        --surface-color: rgba(30, 41, 59, 0.76);
        --surface-solid: #1e293b;

        --text-main: #f3e8ff;
        --text-muted: #cbd5e1;

        --border-color: rgba(168, 85, 247, 0.22);

        --shadow-sm: 0 10px 28px rgba(0, 0, 0, 0.28);
        --shadow-md: 0 20px 45px rgba(0, 0, 0, 0.34);
        --shadow-lg: 0 25px 60px rgba(0, 0, 0, 0.45);
    }

    body {
        background:
            radial-gradient(
                circle at top right,
                rgba(88, 28, 135, 0.35),
                transparent 34%
            ),
            radial-gradient(
                circle at bottom left,
                rgba(49, 46, 129, 0.28),
                transparent 38%
            ),
            linear-gradient(
                135deg,
                #090d16 0%,
                #111827 55%,
                #1e1b4b 100%
            );

        color: var(--text-main);
    }

    .composer,
    .auth-card {
        background: rgba(30, 41, 59, 0.84);
    }

    .composer textarea,
    .comment-box textarea,
    .auth-card input {
        background: rgba(15, 23, 42, 0.72);
        color: var(--text-main);
    }

    .composer-actions button,
    .composer-actions select,
    .feed-tab,
    .auth-card > button,
    .admin-stats-card,
    .admin-tab-btn,
    .back-btn {
        background: rgba(30, 41, 59, 0.82);
        color: var(--text-main);
    }

    .feed-tab.active,
    #publishButton,
    .comment-box button,
    .auth-card form button,
    .admin-tab-btn.active {
        color: #fff;
    }

    .bg-picker {
        background: rgba(15, 23, 42, 0.65);
    }
}

/* ================================
   V1.1 — الوضع اليدوي
================================ */

html[data-theme="light"] body {
    background:
        radial-gradient(
            circle at top right,
            rgba(196, 181, 253, 0.55),
            transparent 34%
        ),
        radial-gradient(
            circle at bottom left,
            rgba(129, 140, 248, 0.28),
            transparent 36%
        ),
        linear-gradient(
            135deg,
            #faf9ff 0%,
            #f1edff 100%
        );

    color: var(--text-main);
}

html[data-theme="dark"] {
    --primary-color: #a855f7;
    --primary-dark: #c084fc;
    --secondary-color: #6366f1;

    --bg-color: #090d16;
    --surface-color: rgba(30, 41, 59, 0.76);
    --surface-solid: #1e293b;

    --text-main: #f3e8ff;
    --text-muted: #cbd5e1;

    --border-color: rgba(168, 85, 247, 0.22);

    --shadow-sm: 0 10px 28px rgba(0, 0, 0, 0.28);
    --shadow-md: 0 20px 45px rgba(0, 0, 0, 0.34);
    --shadow-lg: 0 25px 60px rgba(0, 0, 0, 0.45);
}

html[data-theme="dark"] body {
    background:
        radial-gradient(
            circle at top right,
            rgba(88, 28, 135, 0.35),
            transparent 34%
        ),
        radial-gradient(
            circle at bottom left,
            rgba(49, 46, 129, 0.28),
            transparent 38%
        ),
        linear-gradient(
            135deg,
            #090d16 0%,
            #111827 55%,
            #1e1b4b 100%
        );

    color: var(--text-main);
}

html[data-theme="dark"] .composer,
html[data-theme="dark"] .auth-card {
    background: rgba(30, 41, 59, 0.84);
}

html[data-theme="dark"] .post-card,
html[data-theme="dark"] .comments-section {
    background: var(--surface-color);
}

html[data-theme="dark"] .composer textarea,
html[data-theme="dark"] .comment-box textarea,
html[data-theme="dark"] .auth-card input {
    background: rgba(15, 23, 42, 0.72);
    color: var(--text-main);
}

html[data-theme="dark"] .composer-actions button,
html[data-theme="dark"] .composer-actions select,
html[data-theme="dark"] .feed-tab,
html[data-theme="dark"] .auth-card > button,
html[data-theme="dark"] .back-btn {
    background: rgba(30, 41, 59, 0.82);
    color: var(--text-main);
}

html[data-theme="dark"] .bg-picker {
    background: rgba(15, 23, 42, 0.65);
}