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

:root {
  --bg-main: #eff6ff;
  --bg-card: #ffffff;
  --bg-soft: #f9fafb;
  --text-main: #0f172a;
  --text-soft: #64748b;
  --border-soft: #e5e7eb;
  --primary: #2563eb;
  --primary-soft: #eff6ff;
  --accent-green: #22c55e;
  --accent-yellow: #facc15;
  --shadow-strong: 0 24px 50px rgba(15, 23, 42, 0.18);
  --shadow-soft: 0 14px 32px rgba(15, 23, 42, 0.16);
}

/* Dark mode */
.dark {
  --bg-main: #020617;
  --bg-card: #020617;
  --bg-soft: #0b1120;
  --text-main: #e5e7eb;
  --text-soft: #9ca3af;
  --border-soft: #1e293b;
  --primary: #60a5fa;
  --primary-soft: #0b1120;
  --accent-green: #4ade80;
  --accent-yellow: #facc15;
  --shadow-strong: 0 24px 50px rgba(15, 23, 42, 0.9);
  --shadow-soft: 0 14px 32px rgba(15, 23, 42, 0.9);
}

body {
  font-family: 'Poppins', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Background gradient: education + logopediya vibe */
.landing-body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 0% 0%, #dbeafe 0, transparent 55%),
    radial-gradient(circle at 100% 0%, #dcfce7 0, transparent 55%),
    radial-gradient(circle at 50% 100%, #fef9c3 0, transparent 55%),
    linear-gradient(145deg, var(--bg-main), #f9fafb);
  color: var(--text-main);
}

.dark .landing-body {
  background: radial-gradient(circle at 0% 0%, #0f172a 0, transparent 55%),
              radial-gradient(circle at 100% 0%, #111827 0, transparent 55%),
              radial-gradient(circle at 50% 100%, #1f2937 0, transparent 55%),
              linear-gradient(145deg, #020617, #020617);
}

/* Top nav */
.top-nav {
  max-width: 1200px;
  margin: 8px auto 0;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,0.85);
  border: 1px solid rgba(148,163,184,0.3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  backdrop-filter: blur(12px);
}

.dark .top-nav {
  background: rgba(15,23,42,0.9);
  border-color: rgba(30,64,175,0.5);
}

.top-nav-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.top-logo {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: conic-gradient(from 200deg, #60a5fa, #22c55e, #facc15, #60a5fa);
  color: #0b1120;
  font-size: 18px;
}

.top-title {
  font-size: 14px;
  font-weight: 600;
}

/* Theme toggle */
.theme-toggle {
  border-radius: 999px;
  border: 1px solid rgba(148,163,184,0.6);
  background: var(--bg-card);
  color: var(--text-main);
  padding: 6px 10px;
  font-size: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.theme-toggle.small {
  padding: 4px 8px;
  border-radius: 999px;
}

.theme-icon {
  font-size: 14px;
}

.theme-label {
  font-size: 12px;
}

/* General container */
.container.quiz-container {
  max-width: 1200px;
  margin: 16px auto 24px;
  background: rgba(255, 255, 255, 0.98);
  border-radius: 24px;
  box-shadow: var(--shadow-strong);
  overflow: hidden;
}

.dark .container.quiz-container {
  background: rgba(15,23,42,0.98);
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: linear-gradient(90deg, rgba(59,130,246,0.12), rgba(52,211,153,0.12), rgba(250,204,21,0.12));
  border-bottom: 1px solid rgba(148,163,184,0.35);
}

.dark .header {
  background: linear-gradient(90deg, rgba(15,23,42,0.9), rgba(15,23,42,0.9));
  border-bottom-color: rgba(30,64,175,0.5);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 44px;
  height: 44px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: conic-gradient(from 180deg, #60a5fa, #22c55e, #facc15, #60a5fa);
  color: white;
  font-size: 20px;
  box-shadow: 0 12px 24px rgba(37,99,235,0.35);
}

.logo-text .logo-title {
  font-weight: 600;
  font-size: 16px;
}

.logo-text .logo-subtitle {
  font-size: 12px;
  color: var(--text-soft);
}

/* Timer */
.timer {
  display: flex;
  align-items: center;
  gap: 8px;
}

.timer-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 4px 15px;
  background: var(--bg-soft);
  border-radius: 9px;
  border: 3px solid rgba(22,163,74,1.0);
}

.timer-number {
  font-size: 18px;
  font-weight: 600;
  color: var(--accent-green);
}

.timer-label {
  font-size: 11px;
  color: var(--text-soft);
}

.timer-separator {
  font-size: 18px;
  font-weight: 600;
  color: var(--accent-green);
}

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

.submit-btn {
  border-radius: 999px;
  border: none;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  background: linear-gradient(135deg, var(--primary), var(--accent-green));
  color: #fff;
  box-shadow: 0 16px 30px rgba(37,99,235,0.45);
}

/* Layout */
.main-content {
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  min-height: 520px;
}

/* Sidebar */
.sidebar {
  padding: 18px 16px 20px;
  border-right: 1px solid var(--border-soft);
  background: linear-gradient(180deg, rgba(219,234,254,0.9), rgba(240,253,244,0.9));
}

.dark .sidebar {
  background: radial-gradient(circle at 0 0, #0f172a 0, transparent 60%),
              radial-gradient(circle at 100% 100%, #064e3b 0, transparent 60%),
              #020617;
}

.student-info {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  padding: 12px;
  border-radius: 16px;
  background: rgba(255,255,255,0.9);
  box-shadow: 0 8px 18px rgba(15,23,42,0.1);
}

.dark .student-info {
  background: #020617;
  box-shadow: 0 8px 18px rgba(15,23,42,0.8);
}

.student-avatar {
  width: 60px;
  height: 70px;
  border-radius: 8px;     /* 🔧 yumaloq emas, faqat yengil burchak */
  overflow: hidden;
  flex-shrink: 0;
}

.avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;       /* yuz to‘liq chiqadi */
  border-radius: 0;        /* 🔥 dumaloqlikni butunlay olib tashlaydi */
}



.student-details h3 {
  font-size: 14px;
}
.dark .student-details h3 {
  color: #e5e7eb;    /* oqish kul rang — dark mode uchun ideal */
}

.dark .user-role {
  color: #9ca3af;    /* light grey — dark mode uchun mos */
}

.dark .student-meta {
  color: #d1d5db;    /* telefon raqami ham ko‘rinsin */
}

.user-role {
  font-size: 12px;
  color: var(--text-soft);
}

.student-meta {
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: #475569;
}

.dark .student-meta {
  color: #e5e7eb;
}

.subject-section {
  margin-top: 14px;
}

.subject-section h4 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}

.question-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.question-btn {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  border: 1px solid #e2e8f0;
  background: #f8fafc;
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.18s;
}

.dark .question-btn {
  background: #0f172a;
  border-color: #1f2937;
  color: #e5e7eb;
}

.question-btn:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.question-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--accent-green));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 8px 16px rgba(37,99,235,0.35);
}

.question-btn.answered {
  background: linear-gradient(135deg, var(--accent-green), #bef264);
  color: #022c22;
  border-color: transparent;
}

/* Question card */
.question-area {
  padding: 18px 18px 22px;
  background: var(--bg-soft);
}

.question-card {
  height: 100%;
  border-radius: 20px;
  background: var(--bg-card);
  box-shadow: var(--shadow-soft);
  padding: 18px 18px 16px;
  display: flex;
  flex-direction: column;
}

.question-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.question-tag {
  font-size: 11px;
  display: inline-flex;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(59,130,246,0.09);
  color: #1d4ed8;
}

.dark .question-tag {
  background: rgba(37,99,235,0.2);
  color: #bfdbfe;
}

.question-header h2 {
  font-size: 18px;
  margin-top: 6px;
}

.pill {
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  background: #f1f5f9;
  color: var(--text-main);
}

.dark .pill {
  background: #020617;
  color: #e5e7eb;
}

/* Question content */
.question-content {
  flex: 1;
  margin-bottom: 18px;
}

#questionText {
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 16px;
  color: var(--text-main);
}

.options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.option-card {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  cursor: pointer;
  transition: all 0.12s;
}

.option-card input[type="radio"] {
  margin-top: 4px;
}

.option-letter {
  font-weight: 600;
  font-size: 13px;
  color: var(--primary);
}

.option-text {
  font-size: 14px;
  color: var(--text-main);
}

.option-card.selected {
  background: linear-gradient(135deg, rgba(37,99,235,0.08), rgba(34,197,94,0.09));
  border-color: var(--primary);
}

/* Footer nav */
.question-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-top: 1px solid var(--border-soft);
  padding-top: 10px;
}

.nav-btn {
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 14px;
  border: none;
  cursor: pointer;
}

.nav-btn.ghost {
  background: #eef2ff;
  color: #4f46e5;
}

.dark .nav-btn.ghost {
  background: #1e293b;
  color: #e0f2fe;
}

.nav-btn.primary {
  background: var(--primary);
  color: #fff;
}

/* Landing page layout */
.landing-wrapper {
  max-width: 1100px;
  margin: 24px auto;
  padding: 0 16px 24px;
}

.landing-main {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 28px;
  align-items: center;
}

.landing-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(59,130,246,0.12);
  color: #1d4ed8;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 12px;
}

.landing-title {
  font-size: clamp(26px, 4vw, 34px);
  line-height: 1.2;
  margin-bottom: 12px;
}

.highlight {
  background: linear-gradient(120deg, var(--primary), var(--accent-green), var(--accent-yellow));
  -webkit-background-clip: text;
  color: transparent;
}

.landing-subtitle {
  font-size: 14px;
  color: var(--text-soft);
  margin-bottom: 18px;
}

.landing-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(148,163,184,0.16);
  font-size: 12px;
  color: var(--text-main);
}

.landing-form-card {
  background: rgba(255,255,255,0.96);
  border-radius: 24px;
  padding: 20px 20px 18px;
  box-shadow: var(--shadow-strong);
  border: 1px solid rgba(148,163,184,0.28);
  backdrop-filter: blur(12px);
}

.dark .landing-form-card {
  background: rgba(15,23,42,0.98);
  border-color: rgba(30,64,175,0.6);
}

.landing-form-title {
  font-size: 19px;
  margin-bottom: 4px;
}

.landing-form-subtitle {
  font-size: 13px;
  color: var(--text-soft);
  margin-bottom: 16px;
}

.form-grid {
  display: grid;
  gap: 12px;
}

.form-field label {
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 4px;
  display: block;
  color: var(--text-main);
}

.form-input {
  width: 100%;
  border-radius: 999px;
  border: 1px solid #cbd5f5;
  padding: 10px 13px;
  font-size: 14px;
  outline: none;
  background: #f8fafc;
  transition: all 0.15s;
}

.dark .form-input {
  background: #020617;
  border-color: #1d4ed8;
  color: #e5e7eb;
}

.form-input.textarea {
  border-radius: 14px;
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px rgba(37,99,235,0.18);
  background: #ffffff;
}

.dark .form-input:focus {
  background: #020617;
}

.form-input::placeholder {
  color: #94a3b8;
}

.primary-btn {
  width: 100%;
  margin-top: 4px;
  border-radius: 999px;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  background: linear-gradient(135deg, var(--primary), var(--accent-green));
  color: white;
  box-shadow: 0 16px 30px rgba(37,99,235,0.45);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.primary-btn.small {
  width: auto;
  padding-inline: 16px;
  box-shadow: none;
}

.primary-btn .icon {
  font-size: 18px;
}

.secondary-btn {
  border-radius: 999px;
  padding: 9px 16px;
  font-size: 13px;
  border: 1px solid #cbd5f5;
  background: #ffffff;
  color: #1d4ed8;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.dark .secondary-btn {
  background: #020617;
  border-color: #1d4ed8;
  color: #bfdbfe;
}

.secondary-btn.small {
  font-size: 12px;
  padding: 7px 14px;
}

.landing-note {
  margin-top: 6px;
  font-size: 11px;
  color: #94a3b8;
}

.landing-links {
  margin-top: 10px;
  font-size: 12px;
}

.link-underlined {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px dashed rgba(37,99,235,0.6);
}

.landing-footer {
  margin-top: 18px;
  font-size: 11px;
  color: #94a3b8;
  text-align: center;
}

/* Results */
.result-wrapper {
  max-width: 900px;
  margin: 24px auto;
  padding: 0 16px 24px;
}

.result-card {
  background: rgba(255,255,255,0.97);
  border-radius: 24px;
  padding: 22px 18px 18px;
  box-shadow: var(--shadow-strong);
}

.dark .result-card {
  background: #020617;
}

.result-card h1 {
  font-size: 22px;
  margin-bottom: 4px;
}

.result-user {
  font-size: 14px;
  color: var(--text-soft);
  margin-bottom: 14px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0,1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.result-box {
  padding: 10px 10px;
  border-radius: 18px;
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
}

.result-box.main {
  grid-column: span 2;
  background: radial-gradient(circle at 0 0, #dbeafe, transparent 60%), radial-gradient(circle at 100% 100%, #dcfce7, transparent 60%), var(--bg-card);
}

.dark .result-box.main {
  background: radial-gradient(circle at 0 0, #1e293b, transparent 60%), radial-gradient(circle at 100% 100%, #065f46, transparent 60%), #020617;
}

.result-box .label {
  font-size: 11px;
  color: var(--text-soft);
  margin-bottom: 4px;
}

.result-box .score {
  font-size: 24px;
  font-weight: 700;
}

.result-box .percent {
  font-size: 13px;
  color: var(--accent-green);
}

.result-box .value {
  font-size: 18px;
  font-weight: 600;
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.result-details h2 {
  font-size: 16px;
  margin-bottom: 8px;
}

.answers-list {
  border-radius: 18px;
  background: var(--bg-soft);
  border: 1px solid var(--border-soft);
  max-height: 360px;
  overflow: auto;
}

.answer-row {
  display: grid;
  grid-template-columns: 52px minmax(0,1fr) 80px;
  gap: 8px;
  padding: 8px 10px;
  font-size: 12px;
  border-bottom: 1px solid var(--border-soft);
}

.answer-row:last-child {
  border-bottom: none;
}

.answer-row .badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  padding: 3px 6px;
  border-radius: 999px;
}

.badge.ok {
  background: rgba(22,163,74,0.12);
  color: #166534;
}

.badge.no {
  background: rgba(239,68,68,0.12);
  color: #b91c1c;
}

/* Admin */
.admin-wrapper {
  max-width: 1100px;
  margin: 20px auto;
  padding: 0 16px 24px;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.admin-main {
  display: grid;
  grid-template-columns: minmax(0,1fr) minmax(0,1.1fr);
  gap: 16px;
}

.admin-form-card,
.admin-list-card {
  background: rgba(255,255,255,0.96);
  border-radius: 20px;
  padding: 16px 14px 14px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148,163,184,0.26);
}

.dark .admin-form-card,
.dark .admin-list-card {
  background: #020617;
  border-color: #1f2937;
}

.admin-list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.admin-list {
  max-height: 380px;
}

/* Responsive */
@media (max-width: 960px) {
  .main-content {
    grid-template-columns: minmax(0, 1fr);
  }
  .sidebar {
    order: 2;
  }
  .question-area {
    order: 1;
  }
  .result-grid {
    grid-template-columns: repeat(2,minmax(0,1fr));
  }
  .admin-main {
    grid-template-columns: minmax(0,1fr);
  }
}

@media (max-width: 768px) {
  .container.quiz-container {
    margin: 10px 8px 18px;
    border-radius: 18px;
  }
  .header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .landing-main {
    grid-template-columns: minmax(0,1fr);
    gap: 20px;
  }
  .landing-wrapper {
    margin-top: 14px;
  }
  .result-card {
    padding-inline: 14px;
  }
}

@media (max-width: 500px) {
  .question-grid {
    grid-template-columns: repeat(6, 1fr);
  }
  .result-grid {
    grid-template-columns: repeat(2,minmax(0,1fr));
  }
  .answer-row {
    grid-template-columns: 40px minmax(0,1fr) 70px;
  }
}