/* ==========================================================================
   المتغيرات اللونية (رمادي، أبيض، بيج)
   ========================================================================== */
:root {
    --bg-beige-light: #F7F4EF;
    --bg-beige-medium: #EAE3D2;
    --accent-beige-dark: #B8A382;
    --accent-beige-glow: #D4C3A3;
    
    --grey-darkest: #26292E;
    --grey-dark: #3E434C;
    --grey-medium: #6C737E;
    --grey-light: #DCDFE4;
    
    --pure-white: #FFFFFF;
    --glass-white: rgba(255, 255, 255, 0.82);
    --glass-border: rgba(184, 163, 130, 0.45);
    
    --shadow-soft: 0 8px 30px rgba(38, 41, 46, 0.08);
    --shadow-dynamic: 0 12px 35px rgba(184, 163, 130, 0.35);
    --transition-bounce: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ==========================================================================
   إعدادات عامة ودعم قارئ الشاشة
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-beige-light);
    color: var(--grey-darkest);
    line-height: 1.7;
}

body {
    position: relative;
    min-height: 100vh;
    overflow-x: hidden;
}

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

.skip-link {
    position: absolute;
    top: -50px;
    right: 20px;
    background: var(--grey-darkest);
    color: var(--pure-white);
    padding: 8px 16px;
    z-index: 1000;
    border-radius: 0 0 8px 8px;
    text-decoration: none;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

/* الخلفية المستقبلية المتحركة */
#futuristic-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    background: linear-gradient(135deg, var(--bg-beige-light) 0%, var(--bg-beige-medium) 55%, var(--grey-light) 100%);
}

.container {
    width: 92%;
    max-width: 1200px;
    margin: 0 auto;
}

.hidden {
    display: none !important;
}

/* ==========================================================================
   الأزرار الديناميكية (تغير الشكل مع تفاعل الماوس أو النقر)
   ========================================================================== */
.dynamic-btn {
    position: relative;
    display: inline-block;
    padding: 10px 22px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: 2px solid transparent;
    border-radius: 10px;
    background-color: var(--grey-dark);
    color: var(--pure-white);
    transition: var(--transition-bounce);
    overflow: hidden;
    user-select: none;
}

.dynamic-btn:hover,
.dynamic-btn:focus-visible {
    border-radius: 25px 6px 25px 6px;
    transform: translateY(-4px) scale(1.04);
    background-color: var(--grey-darkest);
    border-color: var(--accent-beige-dark);
    box-shadow: var(--shadow-dynamic);
    letter-spacing: 0.4px;
}

.dynamic-btn:active {
    transform: translateY(1px) scale(0.96);
    border-radius: 6px 25px 6px 25px;
    background-color: var(--accent-beige-dark);
    color: var(--grey-darkest);
}

.primary-btn {
    background-color: var(--grey-darkest);
    border-color: var(--accent-beige-dark);
}

.secondary-btn {
    background-color: var(--accent-beige-dark);
    color: var(--grey-darkest);
}

.outline-btn {
    background-color: transparent;
    color: var(--grey-darkest);
    border: 2px solid var(--grey-medium);
}

/* ==========================================================================
   الهيدر وعداد الطلاب المباشر
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    padding: 14px 0;
    box-shadow: var(--shadow-soft);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
}

.logo-area h1 {
    font-size: 1.4rem;
    color: var(--grey-darkest);
}

.logo-area .subtitle {
    font-size: 0.82rem;
    color: var(--grey-medium);
}

.live-counter-box {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-beige-medium);
    border: 1px solid var(--accent-beige-dark);
    padding: 8px 18px;
    border-radius: 50px;
    box-shadow: inset 0 2px 5px rgba(0,0,0,0.04);
}

.live-dot {
    width: 11px;
    height: 11px;
    background-color: #2ea043;
    border-radius: 50%;
    box-shadow: 0 0 8px #2ea043;
    display: inline-block;
    animation: pulseLive 1.5s infinite;
}

@keyframes pulseLive {
    0% { transform: scale(0.95); opacity: 0.7; }
    50% { transform: scale(1.25); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.7; }
}

.counter-number {
    font-size: 1.25rem;
    color: var(--grey-darkest);
    background: var(--pure-white);
    padding: 2px 12px;
    border-radius: 20px;
    border: 1px solid var(--grey-light);
    transition: transform 0.3s ease;
}

.counter-bump {
    transform: scale(1.35);
    background-color: var(--accent-beige-glow);
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 8px;
    flex-wrap: wrap;
}

.nav-btn {
    background-color: var(--bg-beige-light);
    color: var(--grey-darkest);
    border: 1px solid var(--grey-light);
    padding: 8px 15px;
}

.nav-btn:hover {
    color: var(--pure-white);
}

/* ==========================================================================
   قسم الترحيب ومنطقة البحث الديناميكية
   ========================================================================== */
.hero-section {
    text-align: center;
    padding: 55px 15px 35px;
}

.hero-section h2 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--grey-darkest);
}

.hero-section p {
    color: var(--grey-dark);
    max-width: 650px;
    margin: 0 auto 28px;
}

.search-wrapper {
    max-width: 720px;
    margin: 0 auto;
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--pure-white);
    border: 2px solid var(--grey-light);
    border-radius: 14px;
    padding: 6px;
    width: 82%;
    margin: 0 auto;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-bounce);
}

.search-box:hover {
    width: 94%;
    border-radius: 30px 10px 30px 10px;
    border-color: var(--accent-beige-dark);
    box-shadow: var(--shadow-dynamic);
}

.search-box:focus-within,
.search-box.active-search {
    width: 100%;
    border-radius: 50px;
    border-color: var(--grey-darkest);
    background: linear-gradient(to left, var(--pure-white), var(--bg-beige-light));
    transform: scale(1.02);
    box-shadow: 0 15px 40px rgba(38, 41, 46, 0.16);
}

.search-box input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 12px 18px;
    font-size: 1rem;
    color: var(--grey-darkest);
    outline: none;
}

.search-status {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--grey-medium);
    min-height: 24px;
}

/* ==========================================================================
   البطاقات الزجاجية (Cards) والأقسام
   ========================================================================== */
.card-glass {
    background: var(--glass-white);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 18px;
    padding: 25px;
    box-shadow: var(--shadow-soft);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-radius 0.3s ease;
}

.card-glass:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-dynamic);
    border-color: var(--accent-beige-dark);
}

.content-section {
    padding: 35px 0;
}

.section-header {
    margin-bottom: 25px;
    border-right: 5px solid var(--accent-beige-dark);
    padding-right: 15px;
}

.section-header h2 {
    font-size: 1.6rem;
    color: var(--grey-darkest);
}

.section-header p {
    color: var(--grey-medium);
    font-size: 0.95rem;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 24px;
}

/* ==========================================================================
   قسم المحادثة الجماعية (Group Chat)
   ========================================================================== */
.chat-wrapper {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chat-identity-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    background: var(--bg-beige-medium);
    padding: 12px 18px;
    border-radius: 12px;
    border: 1px solid var(--accent-beige-dark);
}

.chat-status-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
}

.guest-name-box input {
    padding: 8px 14px;
    border: 1px solid var(--grey-medium);
    border-radius: 8px;
    background: var(--pure-white);
    color: var(--grey-darkest);
    font-size: 0.9rem;
    width: 240px;
    transition: var(--transition-bounce);
}

.guest-name-box input:focus {
    outline: none;
    border-color: var(--grey-darkest);
    border-radius: 18px 6px 18px 6px;
    box-shadow: 0 0 0 3px rgba(184, 163, 130, 0.3);
}

.chat-messages-box {
    height: 380px;
    overflow-y: auto;
    background: var(--bg-beige-light);
    border: 1px solid var(--grey-light);
    border-radius: 14px;
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* تصميم فقاعات الرسائل */
.chat-bubble {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 16px;
    background: var(--pure-white);
    border: 1px solid var(--grey-light);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.04);
    align-self: flex-start;
    animation: fadeInMsg 0.25s ease-out;
}

@keyframes fadeInMsg {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* تمييز رسائل المعلم */
.chat-bubble.role-teacher {
    background: linear-gradient(135deg, var(--grey-darkest) 0%, var(--grey-dark) 100%);
    color: var(--pure-white);
    border-color: var(--accent-beige-dark);
}

.chat-bubble.role-teacher .msg-author,
.chat-bubble.role-teacher .msg-time {
    color: var(--bg-beige-medium);
}

/* تمييز رسائل المستخدم الحالي */
.chat-bubble.own-message {
    align-self: flex-end;
    background: var(--bg-beige-medium);
    border-color: var(--accent-beige-dark);
}

.msg-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 5px;
    font-size: 0.82rem;
}

.msg-author {
    font-weight: 700;
    color: var(--grey-darkest);
}

.msg-badge {
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.72rem;
    font-weight: 700;
    background: var(--grey-light);
    color: var(--grey-darkest);
}

.role-teacher .msg-badge {
    background: var(--accent-beige-dark);
    color: var(--grey-darkest);
}

.msg-time {
    font-size: 0.75rem;
    color: var(--grey-medium);
    margin-right: auto;
}

.msg-text {
    font-size: 0.95rem;
    word-wrap: break-word;
}

/* صندوق إدخال الرسالة الديناميكي */
.chat-input-container {
    display: flex;
    gap: 10px;
    background: var(--pure-white);
    border: 2px solid var(--grey-light);
    border-radius: 14px;
    padding: 6px;
    transition: var(--transition-bounce);
}

.chat-input-container:hover {
    border-color: var(--accent-beige-dark);
    border-radius: 24px 8px 24px 8px;
}

.chat-input-container:focus-within {
    border-color: var(--grey-darkest);
    border-radius: 30px;
    box-shadow: var(--shadow-dynamic);
}

.chat-input-container input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 10px 16px;
    font-size: 0.95rem;
    color: var(--grey-darkest);
    outline: none;
}

/* ==========================================================================
   قسم تسجيل الدخول والتسجيل
   ========================================================================== */
.auth-section {
    max-width: 650px;
    margin: 15px auto 40px;
}

.auth-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.auth-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.tab-btn {
    flex: 1;
    background: var(--bg-beige-medium);
    color: var(--grey-darkest);
}

.tab-btn.active {
    background: var(--grey-darkest);
    color: var(--pure-white);
    border-color: var(--accent-beige-dark);
}

.auth-form {
    display: grid;
    gap: 15px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--grey-dark);
}

.form-group input,
.form-group select {
    padding: 11px 14px;
    border: 1px solid var(--grey-light);
    border-radius: 10px;
    background: var(--pure-white);
    font-size: 0.95rem;
    transition: border-color 0.25s, box-shadow 0.25s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-beige-dark);
    box-shadow: 0 0 0 3px rgba(184, 163, 130, 0.25);
}

.auth-alert {
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 15px;
    font-weight: 600;
    background: var(--bg-beige-medium);
    border-right: 4px solid var(--grey-darkest);
}

.user-welcome {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-beige-light);
    padding: 8px 14px;
    border-radius: 12px;
}

.data-management-bar {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px dashed var(--grey-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

/* ==========================================================================
   بطاقات الفعاليات والأعضاء والأخبار
   ========================================================================== */
.badge, .role-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 12px;
    background: var(--bg-beige-medium);
    color: var(--grey-darkest);
}

.teacher-tag {
    background: var(--grey-darkest);
    color: var(--bg-beige-light);
}

.card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--grey-medium);
    margin: 15px 0;
    padding-top: 12px;
    border-top: 1px solid var(--grey-light);
}

.action-card-btn {
    width: 100%;
    text-align: center;
}

.member-card {
    text-align: center;
}

.featured-teacher {
    border: 2px solid var(--accent-beige-dark);
    background: linear-gradient(180deg, var(--pure-white) 0%, var(--bg-beige-light) 100%);
}

.member-avatar {
    width: 68px;
    height: 68px;
    border-radius: 50%;
    background: var(--grey-darkest);
    color: var(--bg-beige-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: bold;
    margin: 0 auto 12px;
    border: 3px solid var(--accent-beige-dark);
}

.member-title {
    font-weight: 700;
    color: var(--accent-beige-dark);
    margin: 4px 0 10px;
}

.news-date {
    display: block;
    font-size: 0.82rem;
    color: var(--grey-medium);
    margin-bottom: 6px;
}

.site-footer {
    margin-top: 50px;
    background: var(--grey-darkest);
    color: var(--bg-beige-light);
    text-align: center;
    padding: 22px 0;
    font-size: 0.9rem;
}

/* ==========================================================================
   التجاوب مع الشاشات (لابتوب، تابلت، هاتف محمول)
   ========================================================================== */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        text-align: center;
    }

    .main-nav ul {
        justify-content: center;
    }

    .hero-section h2 {
        font-size: 1.5rem;
    }

    .search-box,
    .chat-input-container {
        width: 100%;
        flex-direction: column;
        gap: 8px;
        border-radius: 16px;
    }

    .search-box input,
    .search-action-btn,
    .chat-send-btn,
    .guest-name-box,
    .guest-name-box input {
        width: 100%;
    }

    .chat-bubble {
        max-width: 92%;
    }

    .data-management-bar {
        flex-direction: column;
        text-align: center;
    }
}