/* =============================================
   المساعد الذّكاليّ - ملف الأنماط الرئيسي
   دعم RTL للعربية
============================================= */
@import url('https://fonts.googleapis.com/css2?family=Tajawal:wght@300;400;500;700;800&display=swap');

:root {
  --primary:    #2E7D32;
  --primary-lt: #4CAF50;
  --accent:     #FF8F00;
  --accent-lt:  #FFC107;
  --danger:     #D32F2F;
  --info:       #0288D1;
  --dark:       #1A237E;
  --bg:         #F5F5F5;
  --card:       #FFFFFF;
  --text:       #212121;
  --muted:      #757575;
  --border:     #E0E0E0;
  --shadow:     0 4px 20px rgba(0,0,0,0.08);
  --radius:     14px;
  --radius-sm:  8px;
  --transition: all .3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { direction: rtl; font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Tajawal', 'Arial', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--primary-lt); border-radius: 4px; }

/* ---- Links ---- */
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .65rem 1.4rem; border-radius: var(--radius-sm);
  font-family: inherit; font-size: .95rem; font-weight: 600;
  cursor: pointer; border: none; transition: var(--transition);
  text-decoration: none;
}
.btn-primary   { background: var(--primary);  color: #fff; }
.btn-primary:hover { background: var(--primary-lt); color: #fff; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(46,125,50,.35); }
.btn-accent    { background: var(--accent);   color: #fff; }
.btn-accent:hover  { background: var(--accent-lt); transform: translateY(-2px); }
.btn-danger    { background: var(--danger);   color: #fff; }
.btn-info      { background: var(--info);     color: #fff; }
.btn-outline   { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-sm        { padding: .4rem .9rem; font-size: .85rem; }
.btn-lg        { padding: .85rem 2rem; font-size: 1.1rem; }
.btn-block     { width: 100%; justify-content: center; }

/* ---- Cards ---- */
.card {
  background: var(--card); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 1.5rem;
  transition: var(--transition);
}
.card:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,0,0,0.12); }
.card-header { border-bottom: 2px solid var(--border); padding-bottom: 1rem; margin-bottom: 1rem; }
.card-title   { font-size: 1.15rem; font-weight: 700; color: var(--primary); }

/* ---- Forms ---- */
.form-group   { margin-bottom: 1.2rem; }
.form-label   { display: block; font-weight: 600; margin-bottom: .45rem; font-size: .9rem; color: var(--dark); }
.form-control {
  width: 100%; padding: .75rem 1rem; border: 2px solid var(--border);
  border-radius: var(--radius-sm); font-family: inherit; font-size: .95rem;
  transition: var(--transition); background: #fff; color: var(--text);
  direction: rtl;
}
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(46,125,50,.15); }
.form-control.is-invalid { border-color: var(--danger); }
.invalid-feedback { color: var(--danger); font-size: .83rem; margin-top: .3rem; }
select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23757575' d='M6 8L0 0h12z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: left 1rem center; padding-left: 2.5rem; }

/* ---- Navbar ---- */
.navbar {
  background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
  padding: .8rem 1.5rem; position: sticky; top: 0; z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,.25);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.navbar-brand { display: flex; align-items: center; gap: .75rem; color: #fff; font-size: 1.15rem; font-weight: 800; }
.navbar-brand img { width: 42px; height: 42px; border-radius: 50%; object-fit: cover; }
.navbar-nav   { display: flex; align-items: center; gap: .5rem; list-style: none; }
.nav-link     { color: rgba(255,255,255,.85); padding: .45rem .85rem; border-radius: var(--radius-sm); font-weight: 500; transition: var(--transition); }
.nav-link:hover, .nav-link.active { color: #fff; background: rgba(255,255,255,.15); }
.nav-link i   { margin-left: .4rem; }

/* ---- Sidebar ---- */
.sidebar {
  width: 260px; min-height: calc(100vh - 65px); background: var(--dark);
  padding: 1.5rem 1rem; position: fixed; top: 65px; right: 0;
  overflow-y: auto; transition: var(--transition); z-index: 900;
}
.sidebar-link {
  display: flex; align-items: center; gap: .75rem;
  padding: .75rem 1rem; color: rgba(255,255,255,.75);
  border-radius: var(--radius-sm); margin-bottom: .25rem;
  font-weight: 500; transition: var(--transition);
}
.sidebar-link:hover, .sidebar-link.active { background: var(--primary); color: #fff; }
.sidebar-link i { width: 20px; text-align: center; }
.sidebar-section { color: rgba(255,255,255,.4); font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; padding: 1rem .75rem .5rem; }
.main-content { margin-right: 260px; padding: 2rem; min-height: calc(100vh - 65px); }

/* ---- Alert ---- */
.alert { padding: 1rem 1.25rem; border-radius: var(--radius-sm); margin-bottom: 1rem; font-weight: 500; display: flex; align-items: center; gap: .75rem; }
.alert-success { background: #E8F5E9; color: #2E7D32; border-right: 4px solid #2E7D32; }
.alert-danger  { background: #FFEBEE; color: #C62828; border-right: 4px solid #C62828; }
.alert-info    { background: #E3F2FD; color: #01579B; border-right: 4px solid #01579B; }
.alert-warning { background: #FFF8E1; color: #E65100; border-right: 4px solid #E65100; }

/* ---- Badge ---- */
.badge { display: inline-flex; align-items: center; padding: .2rem .6rem; border-radius: 20px; font-size: .78rem; font-weight: 700; }
.badge-primary { background: #E8F5E9; color: var(--primary); }
.badge-accent  { background: #FFF3E0; color: #E65100; }
.badge-danger  { background: #FFEBEE; color: var(--danger); }

/* ---- Progress ---- */
.progress { height: 10px; background: var(--border); border-radius: 5px; overflow: hidden; }
.progress-bar { height: 100%; background: var(--primary-lt); border-radius: 5px; transition: width .6s ease; }

/* ---- Stats cards ---- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card  { background: var(--card); border-radius: var(--radius); padding: .9rem 1rem; text-align: center; box-shadow: var(--shadow); transition: var(--transition); display: flex; flex-direction: column; align-items: center; }
.stat-card:hover { transform: translateY(-2px); }
.stat-icon  { width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; margin: 0 auto .5rem; }
.stat-value { font-size: 1.5rem; font-weight: 800; color: var(--dark); line-height: 1.2; }
.stat-label { font-size: .8rem; color: var(--muted); font-weight: 500; margin-top: .2rem; }

/* ---- Course / Lesson cards ---- */
.courses-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem; }
.course-card  { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: var(--transition); background: var(--card); }
.course-card:hover { transform: translateY(-5px); box-shadow: 0 10px 35px rgba(0,0,0,.14); }
.course-banner{ height: 130px; display: flex; align-items: center; justify-content: center; font-size: 3.5rem; }
.course-body  { padding: 1.2rem; }
.course-title { font-weight: 700; font-size: 1.05rem; margin-bottom: .4rem; }
.course-meta  { font-size: .84rem; color: var(--muted); display: flex; gap: .75rem; }

/* ---- Lesson tabs ---- */
.lesson-tabs  { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: 1.5rem; border-bottom: 2px solid var(--border); padding-bottom: .5rem; }
.tab-btn      { padding: .55rem 1.1rem; border-radius: var(--radius-sm) var(--radius-sm) 0 0; background: #fff; border: 2px solid var(--border); border-bottom: none; font-family: inherit; font-weight: 600; cursor: pointer; transition: var(--transition); display: flex; align-items: center; gap: .4rem; }
.tab-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.tab-pane     { display: none; }
.tab-pane.active { display: block; animation: fadeIn .3s ease; }

/* ---- Game ---- */
.game-container { background: linear-gradient(135deg, #0d1b2a 0%, #1b4332 100%); border-radius: var(--radius); min-height: 520px; position: relative; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.mountain-bg    { position: absolute; inset: 0; background-image: url('../images/mountain.svg'); background-size: cover; background-position: bottom; opacity: .35; }
.game-question-box { background: rgba(255,255,255,.95); border-radius: var(--radius); padding: 2rem; max-width: 520px; width: 90%; position: relative; z-index: 10; box-shadow: 0 8px 40px rgba(0,0,0,.4); animation: slideUp .4s ease; }
.question-text  { font-size: 1.15rem; font-weight: 700; margin-bottom: 1.25rem; color: var(--dark); line-height: 1.6; }
.options-grid   { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.option-btn     { padding: .75rem 1rem; border: 2px solid var(--border); border-radius: var(--radius-sm); font-family: inherit; font-size: .95rem; cursor: pointer; transition: var(--transition); background: #fff; font-weight: 500; text-align: right; }
.option-btn:hover { border-color: var(--primary); background: #E8F5E9; }
.option-btn.correct { background: #E8F5E9; border-color: var(--primary); color: var(--primary); }
.option-btn.wrong   { background: #FFEBEE; border-color: var(--danger); color: var(--danger); }
.game-progress  { position: absolute; top: 1rem; left: 50%; transform: translateX(-50%); display: flex; gap: .5rem; z-index: 10; }
.progress-dot   { width: 16px; height: 16px; border-radius: 50%; background: rgba(255,255,255,.3); border: 2px solid rgba(255,255,255,.6); transition: var(--transition); }
.progress-dot.done { background: var(--accent-lt); border-color: var(--accent); }
.progress-dot.current { background: #fff; border-color: #fff; transform: scale(1.25); }

/* Win / Lose overlay */
.game-overlay { position: absolute; inset: 0; z-index: 20; display: flex; align-items: center; justify-content: center; background: rgba(0,0,0,.7); animation: fadeIn .3s ease; }
.game-result-box { background: var(--card); border-radius: var(--radius); padding: 2.5rem 2rem; text-align: center; max-width: 400px; width: 90%; animation: bounceIn .5s ease; }
.result-icon  { font-size: 4rem; margin-bottom: .75rem; }
.result-title { font-size: 1.8rem; font-weight: 800; margin-bottom: .5rem; }
.result-points{ font-size: 1.2rem; color: var(--accent); font-weight: 700; margin-bottom: .75rem; }

/* Scholar card */
.scholar-card { background: linear-gradient(135deg, var(--dark), var(--primary)); color: #fff; border-radius: var(--radius); padding: 1.5rem; text-align: center; margin-bottom: 1rem; }
.scholar-img  { width: 80px; height: 80px; border-radius: 50%; object-fit: cover; margin: 0 auto .75rem; border: 3px solid var(--accent-lt); background: rgba(255,255,255,.2); display: flex; align-items: center; justify-content: center; font-size: 2rem; }
.scholar-name { font-size: 1.25rem; font-weight: 800; }
.scholar-bio  { font-size: .9rem; opacity: .9; line-height: 1.6; }

/* ---- Chatbot ---- */
.chatbot-toggle { position: fixed; bottom: 2rem; left: 2rem; width: 56px; height: 56px; background: var(--primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; cursor: pointer; box-shadow: 0 4px 20px rgba(46,125,50,.4); z-index: 1100; transition: var(--transition); border: none; }
.chatbot-toggle:hover { background: var(--primary-lt); transform: scale(1.1); }
.chatbot-box  { position: fixed; bottom: 5.5rem; left: 2rem; width: 340px; max-height: 480px; background: var(--card); border-radius: var(--radius); box-shadow: 0 8px 40px rgba(0,0,0,.2); z-index: 1100; display: none; flex-direction: column; overflow: hidden; }
.chatbot-box.open { display: flex; animation: slideUp .3s ease; }
.lesson-game-active .chatbot-toggle,
.lesson-game-active .chatbot-box { display: none !important; }
.chatbot-header { background: linear-gradient(135deg, var(--dark), var(--primary)); color: #fff; padding: 1rem 1.25rem; display: flex; align-items: center; gap: .75rem; }
.chatbot-title  { font-weight: 700; flex: 1; }
.chatbot-close  { background: none; border: none; color: rgba(255,255,255,.8); cursor: pointer; font-size: 1.2rem; }
.chatbot-msgs   { flex: 1; overflow-y: auto; padding: 1rem; display: flex; flex-direction: column; gap: .75rem; }
.msg { max-width: 80%; padding: .65rem 1rem; border-radius: var(--radius-sm); font-size: .9rem; line-height: 1.5; }
.msg-bot  { background: #F1F8E9; color: var(--text); align-self: flex-start; border-bottom-right-radius: 2px; }
.msg-user { background: var(--primary); color: #fff; align-self: flex-end; border-bottom-left-radius: 2px; }
.chatbot-input { padding: .75rem 1rem; border-top: 1px solid var(--border); display: flex; gap: .5rem; }
.chatbot-input input { flex: 1; padding: .6rem .9rem; border: 2px solid var(--border); border-radius: var(--radius-sm); font-family: inherit; font-size: .9rem; direction: rtl; }
.chatbot-input input:focus { outline: none; border-color: var(--primary); }
.chatbot-input button { padding: .6rem .9rem; background: var(--primary); color: #fff; border: none; border-radius: var(--radius-sm); cursor: pointer; font-size: 1rem; transition: var(--transition); }
.chatbot-input button:hover { background: var(--primary-lt); }

/* ---- Leaderboard ---- */
.leaderboard { list-style: none; }
.leaderboard li { display: flex; align-items: center; gap: .85rem; padding: .7rem .5rem; border-bottom: 1px solid var(--border); }
.rank-num { width: 28px; height: 28px; border-radius: 50%; background: var(--border); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .85rem; flex-shrink: 0; }
.rank-1 { background: #FFD700; color: #fff; }
.rank-2 { background: #C0C0C0; color: #fff; }
.rank-3 { background: #CD7F32; color: #fff; }
.lb-name { flex: 1; font-weight: 600; }
.lb-pts  { font-weight: 700; color: var(--accent); }

/* ---- Table ---- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow); }
table { width: 100%; border-collapse: collapse; background: var(--card); }
thead tr { background: var(--dark); color: #fff; }
th, td { padding: .85rem 1rem; text-align: right; font-size: .92rem; }
tbody tr:hover { background: #F5F5F5; }
tbody tr + tr { border-top: 1px solid var(--border); }

/* ---- Modal ---- */
.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.55); z-index: 2000; display: flex; align-items: center; justify-content: center; animation: fadeIn .25s ease; }
.modal-box { background: var(--card); border-radius: var(--radius); padding: 2rem; max-width: 560px; width: 92%; max-height: 90vh; overflow-y: auto; animation: slideUp .3s ease; }
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.25rem; }
.modal-title  { font-size: 1.2rem; font-weight: 700; color: var(--dark); }
.modal-close  { background: none; border: none; font-size: 1.4rem; cursor: pointer; color: var(--muted); transition: var(--transition); }
.modal-close:hover { color: var(--danger); }

/* ---- PDF viewer ---- */
.pdf-frame { width: 100%; height: 600px; border: none; border-radius: var(--radius-sm); }

/* ---- Audio player ---- */
.audio-player { background: linear-gradient(135deg, #1A237E, #283593); border-radius: var(--radius); padding: 1.5rem; color: #fff; }
.audio-player audio { width: 100%; margin-top: 1rem; filter: invert(1); }

/* ---- Video section ---- */
.video-frame { width: 100%; aspect-ratio: 16/9; border-radius: var(--radius-sm); border: none; background: #000; }

/* ---- AI Generation loader ---- */
.ai-loader { text-align: center; padding: 3rem; }
.ai-loader .spinner { width: 56px; height: 56px; border: 5px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 1s linear infinite; margin: 0 auto 1rem; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .sidebar { transform: translateX(260px); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-right: 0; padding: 1.2rem; }
  .navbar { padding: .7rem 1rem; }
  .options-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .dashboard-panel { grid-template-columns: 1fr !important; }
}
@media (max-width: 550px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .courses-grid { grid-template-columns: 1fr; }
  .chatbot-box { width: calc(100vw - 2rem); left: 1rem; }
}

/* ---- Animations ---- */
@keyframes fadeIn     { from { opacity: 0; }                    to { opacity: 1; } }
@keyframes slideUp    { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes bounceIn   { 0%{ transform: scale(.5); opacity: 0; } 70%{ transform: scale(1.05); } 100%{ transform: scale(1); opacity: 1; } }
@keyframes spin       { to { transform: rotate(360deg); } }
@keyframes pulse      { 0%,100%{ transform: scale(1); } 50%{ transform: scale(1.05); } }

/* ---- Login page ---- */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%); padding: 1.5rem; }
.login-card { background: var(--card); border-radius: calc(var(--radius)*1.5); padding: 2.5rem; width: 100%; max-width: 440px; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.login-logo { text-align: center; margin-bottom: 1.75rem; }
.login-logo img { width: 80px; height: 80px; border-radius: 50%; margin-bottom: .75rem; }
.login-logo h1 { font-size: 1.35rem; font-weight: 800; color: var(--dark); }
.login-logo p  { font-size: .88rem; color: var(--muted); }
.tab-group { display: flex; background: var(--bg); border-radius: var(--radius-sm); padding: .3rem; margin-bottom: 1.5rem; gap: .3rem; }
.tab-group .tab { flex: 1; padding: .55rem; text-align: center; border-radius: 6px; cursor: pointer; font-weight: 600; font-size: .9rem; transition: var(--transition); border: none; background: transparent; font-family: inherit; color: var(--muted); }
.tab-group .tab.active { background: var(--primary); color: #fff; }

/* ---- Toast ---- */
.toast-container { position: fixed; top: 1.25rem; left: 50%; transform: translateX(-50%); z-index: 9999; display: flex; flex-direction: column; gap: .5rem; pointer-events: none; }
.toast { background: var(--dark); color: #fff; padding: .75rem 1.5rem; border-radius: var(--radius-sm); font-size: .9rem; font-weight: 600; animation: slideDown .3s ease; box-shadow: 0 4px 16px rgba(0,0,0,.25); }
.toast.success { background: var(--primary); }
.toast.error   { background: var(--danger); }
@keyframes slideDown { from { transform: translateY(-20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* ---- Scholar collection ---- */
.scholars-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 1rem; }
.scholar-chip  { background: var(--card); border-radius: var(--radius-sm); padding: 1rem .75rem; text-align: center; box-shadow: var(--shadow); transition: var(--transition); border: 2px solid var(--border); }
.scholar-chip:hover { border-color: var(--primary); transform: translateY(-3px); }
.scholar-chip .icon { font-size: 2.5rem; margin-bottom: .5rem; }
.scholar-chip .sname { font-weight: 700; font-size: .9rem; color: var(--dark); }
.scholar-chip .sera  { font-size: .78rem; color: var(--muted); }
.scholar-chip.locked .icon { filter: grayscale(1) opacity(.35); }
.scholar-chip.locked .sname { color: var(--muted); }