/* ==========================================================================
   CREANEXT TESTIFY — Premium Dark Design System v5
   Major PC UI overhaul: wide layouts, sidebar exam, hero sections
   ========================================================================== */

:root {
  --bg: #06080e;
  --bg-raised: #0d1017;
  --bg-card: #111520;
  --bg-input: #161b2a;
  --bg-hover: #1c2236;
  --bg-glass: rgba(17, 21, 32, 0.85);
  --text: #edf0f7;
  --text-secondary: #8b93a7;
  --text-muted: #555d72;
  --primary: #7c5cfc;
  --primary-hover: #6a48e8;
  --primary-soft: rgba(124, 92, 252, 0.12);
  --primary-glow: rgba(124, 92, 252, 0.25);
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.1);
  --accent-glow: rgba(56, 189, 248, 0.15);
  --success: #34d399;
  --success-soft: rgba(52, 211, 153, 0.1);
  --success-glow: rgba(52, 211, 153, 0.15);
  --danger: #f87171;
  --danger-soft: rgba(248, 113, 113, 0.1);
  --danger-glow: rgba(248, 113, 113, 0.15);
  --warning: #fbbf24;
  --warning-soft: rgba(251, 191, 36, 0.1);
  --warning-glow: rgba(251, 191, 36, 0.15);
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --border-active: rgba(124, 92, 252, 0.4);
  --shadow-xs: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.25);
  --shadow-md: 0 8px 28px rgba(0,0,0,0.35);
  --shadow-lg: 0 16px 56px rgba(0,0,0,0.45);
  --shadow-glow: 0 0 60px rgba(124, 92, 252, 0.08);
  --glass-blur: blur(24px);
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 50px;
  --font: 'Plus Jakarta Sans','Inter',system-ui,-apple-system,sans-serif;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.25,0.8,0.25,1);
  --transition-spring: 0.4s cubic-bezier(0.22,1,0.36,1);
  --max-width-narrow: 520px;
  --max-width-mid: 720px;
  --max-width-wide: 960px;
  --max-width-full: 1200px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  min-height: 100dvh;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Ambient background orbs */
body::before {
  content:'';position:fixed;top:-20%;left:-15%;
  width:50vw;height:50vw;max-width:700px;max-height:700px;
  background:radial-gradient(circle,rgba(124,92,252,0.06) 0%,transparent 65%);
  pointer-events:none;z-index:0;
  animation:floatOrb 20s ease-in-out infinite alternate;
}
body::after {
  content:'';position:fixed;bottom:-20%;right:-15%;
  width:50vw;height:50vw;max-width:600px;max-height:600px;
  background:radial-gradient(circle,rgba(56,189,248,0.04) 0%,transparent 65%);
  pointer-events:none;z-index:0;
  animation:floatOrb 25s ease-in-out infinite alternate-reverse;
}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:var(--primary-soft);color:var(--text)}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

/* ── LAYOUT ─────────────────────────────────────────────────────────────── */
.centered-layout{min-height:100vh;min-height:100dvh;width:100%;display:flex;flex-direction:column;align-items:center;padding:24px 16px;position:relative;z-index:1}
.centered-layout .quiz-container,.centered-layout>div:not(.toast-container){width:100%;max-width:var(--max-width-narrow)}
.centered-layout.wide-layout .quiz-container,.centered-layout.wide-layout>div:not(.toast-container){max-width:var(--max-width-wide)}
.centered-layout.full-layout .quiz-container,.centered-layout.full-layout>div:not(.toast-container){max-width:var(--max-width-full)}
.quiz-container{max-width:860px;margin:0 auto;padding:16px;width:100%;flex:1;display:flex;flex-direction:column;position:relative;z-index:1}

/* ── TYPOGRAPHY ─────────────────────────────────────────────────────────── */
h1,h2,h3,h4{color:var(--text);font-weight:700;line-height:1.3;letter-spacing:-0.3px}
h1{font-size:clamp(24px,5vw,42px)}
h2{font-size:clamp(20px,4vw,32px)}
h3{font-size:clamp(16px,3vw,22px)}

.gradient-text{
  background:linear-gradient(135deg,#a78bfa,var(--primary),var(--accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  font-weight:800;letter-spacing:-0.5px;
}

.subtext,.muted{color:var(--text-secondary);font-size:13px;line-height:1.5}
.text-center{text-align:center}
.text-sm{font-size:12px}

/* ── BRAND ──────────────────────────────────────────────────────────────── */
.brand-header{margin-bottom:24px}
.brand-header.center{text-align:center;display:flex;flex-direction:column;align-items:center}
.brand-icon-wrapper{color:var(--primary);display:flex;align-items:center;gap:10px;margin-bottom:6px}
.brand-icon-wrapper svg{filter:drop-shadow(0 0 16px rgba(124,92,252,0.5));transition:filter 0.3s}
.brand-icon-wrapper:hover svg{filter:drop-shadow(0 0 24px rgba(124,92,252,0.7))}

/* ── CARDS ──────────────────────────────────────────────────────────────── */
.quiz-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:28px;margin-bottom:16px;backdrop-filter:var(--glass-blur);
  box-shadow:var(--shadow-sm);transition:border-color var(--transition-normal),box-shadow var(--transition-normal),transform var(--transition-normal);
}
.quiz-card:hover{border-color:var(--border-hover)}
.animated-card{animation:slideUp 0.5s var(--transition-spring) both}

.landing-card{
  text-align:center;padding:48px 24px;
  background:linear-gradient(170deg,var(--bg-card) 0%,rgba(124,92,252,0.03) 100%);
  border:1px solid var(--border);position:relative;overflow:hidden;
}
.landing-card::before{
  content:'';position:absolute;top:0;left:50%;width:200px;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);
  transform:translateX(-50%);opacity:0.6;
}

/* ── BUTTONS ────────────────────────────────────────────────────────────── */
.quiz-btn{
  padding:12px 24px;border-radius:var(--radius-sm);font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:all var(--transition-normal);display:inline-flex;align-items:center;
  justify-content:center;gap:8px;font-size:14px;font-family:inherit;text-decoration:none;
  position:relative;overflow:hidden;white-space:nowrap;
  -webkit-tap-highlight-color:transparent;touch-action:manipulation;user-select:none;
}
.quiz-btn::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,0.06) 0%,transparent 60%);
  pointer-events:none;opacity:0;transition:opacity 0.2s;
}
.quiz-btn:hover::after{opacity:1}

.quiz-btn.primary{background:linear-gradient(135deg,var(--primary),#6a48e8);color:#fff;box-shadow:0 4px 20px var(--primary-glow)}
.quiz-btn.primary:hover{transform:translateY(-2px);box-shadow:0 8px 32px var(--primary-glow)}
.quiz-btn.primary:active{transform:translateY(0) scale(0.98);box-shadow:0 2px 12px var(--primary-glow)}

.quiz-btn.secondary{background:var(--bg-input);color:var(--text);border:1px solid var(--border)}
.quiz-btn.secondary:hover{background:var(--bg-hover);border-color:var(--border-hover);transform:translateY(-1px)}
.quiz-btn.secondary:active{transform:translateY(0) scale(0.98)}

.quiz-btn.danger{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff;box-shadow:0 4px 16px var(--danger-glow)}
.quiz-btn.danger:hover{transform:translateY(-2px);box-shadow:0 8px 28px var(--danger-glow)}

.quiz-btn.success{background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff;box-shadow:0 4px 16px var(--success-glow)}

.quiz-btn.text-only{background:transparent;color:var(--text-secondary);padding:8px 12px;border:none}
.quiz-btn.text-only:hover{color:var(--text);background:var(--bg-hover)}

.quiz-btn.small{padding:8px 14px;font-size:12px;border-radius:8px}
.quiz-btn.full-width{width:100%}
.quiz-btn.hidden{display:none !important}
.quiz-btn:disabled{opacity:0.35;cursor:not-allowed;transform:none !important;box-shadow:none !important}
.pulse-btn{animation:pulse 2.5s infinite}
.warning-soft{background:var(--warning-soft) !important;border-color:rgba(251,191,36,0.3) !important;color:var(--warning) !important}

/* ── FORMS ──────────────────────────────────────────────────────────────── */
.form-group{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.quiz-label{font-size:11px;font-weight:700;color:var(--text-secondary);text-transform:uppercase;letter-spacing:0.8px}

.quiz-input,select.quiz-input,textarea.quiz-input{
  padding:12px 16px;border-radius:var(--radius-sm);border:1.5px solid var(--border);
  background:var(--bg-input);color:var(--text);font-size:15px;font-family:inherit;
  transition:all var(--transition-fast);width:100%;outline:none;-webkit-appearance:none;
}
.quiz-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow),0 0 20px rgba(124,92,252,0.08);background:var(--bg-raised)}
.quiz-input:hover:not(:focus){border-color:var(--border-hover)}
.quiz-input::placeholder{color:var(--text-muted)}
textarea.quiz-input{resize:vertical;min-height:60px}

select.quiz-input{
  cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238b93a7' viewBox='0 0 16 16'%3E%3Cpath d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:36px;
}
select.quiz-input option{background:var(--bg-card);color:var(--text)}

.quiz-input.monospace{font-family:'JetBrains Mono','Fira Code',monospace;letter-spacing:3px;text-transform:uppercase;font-weight:700;text-align:center;font-size:18px}

.input-group{display:flex;flex-direction:column;gap:6px;text-align:left}
.input-group label{font-size:11px;font-weight:700;color:var(--text-secondary);text-transform:uppercase;letter-spacing:0.8px}

/* ── TABS ───────────────────────────────────────────────────────────────── */
.tab-switcher{display:flex;background:var(--bg-input);padding:4px;border-radius:var(--radius-sm);margin-bottom:24px;border:1px solid var(--border);gap:4px}
.tab-btn{border:none;background:none;padding:10px 16px;border-radius:8px;font-weight:600;font-size:14px;color:var(--text-muted);cursor:pointer;transition:all var(--transition-normal);font-family:inherit;-webkit-tap-highlight-color:transparent}
.tab-btn.active{background:linear-gradient(135deg,var(--primary),#6a48e8);color:white;box-shadow:0 2px 12px var(--primary-glow)}
.tab-btn:hover:not(.active){color:var(--text);background:var(--bg-hover)}
.w-50{width:50%}

/* ── HEADER ─────────────────────────────────────────────────────────────── */
.quiz-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding:12px 16px;background:var(--bg-glass);backdrop-filter:var(--glass-blur);border:1px solid var(--border);border-radius:var(--radius-md);gap:12px;position:sticky;top:0;z-index:50}
.quiz-header.centered{justify-content:center;margin-bottom:28px;background:none;border:none;padding:0;position:static}
.quiz-brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:18px;color:var(--primary)}
.quiz-brand.large{flex-direction:column;font-size:26px}

.logo-circle{width:44px;height:44px;background:linear-gradient(135deg,var(--primary),var(--accent));color:white;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;box-shadow:0 4px 20px var(--primary-glow)}
.logo-circle.large{width:68px;height:68px;font-size:28px;border-radius:var(--radius-md);margin:0 auto 16px;box-shadow:0 8px 32px var(--primary-glow)}

/* ── TIMER ──────────────────────────────────────────────────────────────── */
.timer-badge{background:var(--bg-input);padding:8px 16px;border-radius:var(--radius-full);font-weight:700;color:var(--text);border:1px solid var(--border);display:flex;align-items:center;gap:8px;font-size:15px;font-variant-numeric:tabular-nums;transition:all 0.3s;flex-shrink:0}
.timer-badge.warning{color:var(--warning);border-color:rgba(251,191,36,0.3);background:rgba(251,191,36,0.08)}
.timer-badge.urgent{color:var(--danger);border-color:rgba(248,113,113,0.3);background:rgba(248,113,113,0.1);animation:pulse-danger 1s infinite}
.timer-badge svg{opacity:0.7;flex-shrink:0}

/* ── PROGRESS ───────────────────────────────────────────────────────────── */
.progress-section{margin-bottom:20px}
.progress-labels{display:flex;justify-content:space-between;margin-bottom:8px;font-size:13px;font-weight:500;color:var(--text-secondary)}
.progress-bar-bg{height:5px;background:var(--bg-input);border-radius:5px;overflow:hidden;border:1px solid var(--border)}
.progress-bar-fill{background:linear-gradient(90deg,var(--primary),var(--accent));height:100%;border-radius:5px;transition:width 0.4s cubic-bezier(0.34,1.56,0.64,1);position:relative}
.progress-bar-fill::after{content:'';position:absolute;right:0;top:0;bottom:0;width:20px;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.3));border-radius:5px}

/* ── QUESTIONS & OPTIONS ────────────────────────────────────────────────── */
.question-area{display:flex;flex-direction:column;gap:20px;padding:4px 0}
.question-text{font-size:clamp(17px,3vw,21px);font-weight:600;line-height:1.5;margin-bottom:4px;color:var(--text)}
.options-grid{display:flex;flex-direction:column;gap:8px}
.option-card{display:flex;align-items:center;gap:14px;padding:14px 18px;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-input);cursor:pointer;transition:all var(--transition-normal);position:relative;-webkit-tap-highlight-color:transparent}
.option-card:hover{background:var(--bg-hover);border-color:var(--border-hover);transform:translateX(4px)}
.option-card.selected{background:var(--primary-soft);border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow),inset 0 0 20px rgba(124,92,252,0.05)}
.option-card:active{transform:scale(0.99)}
.hidden-radio{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.option-indicator{width:36px;height:36px;border-radius:10px;border:2px solid var(--border);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all var(--transition-normal);background:var(--bg-raised);font-weight:700;font-size:14px;color:var(--text-secondary)}
.option-card.selected .option-indicator{border-color:var(--primary);background:var(--primary);color:#fff;box-shadow:0 2px 12px var(--primary-glow)}
.option-content{font-size:15px;line-height:1.5;color:var(--text);font-weight:500}
#exam-form{padding-bottom:16px;border-bottom:1px solid var(--border);margin-bottom:12px}

/* ── QUESTION NAVIGATOR ─────────────────────────────────────────────────── */
.question-nav{display:flex;flex-wrap:wrap;gap:6px;padding:14px;background:var(--bg-raised);border-radius:var(--radius-md);border:1px solid var(--border);margin-bottom:16px}
.question-nav-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;width:100%}
.question-nav-header span{font-size:11px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.6px}
.question-nav .nav-dot{width:36px;height:36px;border-radius:8px;border:1px solid var(--border);background:var(--bg-input);color:var(--text-secondary);font-size:12px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 0.2s;font-family:inherit;-webkit-tap-highlight-color:transparent}
.question-nav .nav-dot:hover{background:var(--bg-hover);border-color:var(--border-hover);transform:scale(1.08)}
.question-nav .nav-dot.current{background:linear-gradient(135deg,var(--primary),#6a48e8);color:white;border-color:var(--primary);box-shadow:0 2px 12px var(--primary-glow)}
.question-nav .nav-dot.answered{background:var(--success-soft);border-color:rgba(52,211,153,0.3);color:var(--success)}
.question-nav .nav-dot.current.answered{background:linear-gradient(135deg,var(--primary),#6a48e8);color:white;border-color:var(--primary)}
.question-nav .nav-dot.flagged{background:var(--warning-soft);border-color:rgba(251,191,36,0.3);color:var(--warning)}
.question-nav .nav-dot.flagged.current{background:linear-gradient(135deg,var(--warning),#e8a500);color:#000;border-color:var(--warning)}

/* Nav legend */
.nav-legend{display:flex;gap:12px;flex-wrap:wrap;padding:8px 14px;font-size:11px;color:var(--text-muted)}
.nav-legend-item{display:flex;align-items:center;gap:5px}
.nav-legend-dot{width:10px;height:10px;border-radius:3px;border:1px solid var(--border)}
.nav-legend-dot.dot-current{background:var(--primary);border-color:var(--primary)}
.nav-legend-dot.dot-answered{background:var(--success-soft);border-color:rgba(52,211,153,0.3)}
.nav-legend-dot.dot-unanswered{background:var(--bg-input)}
.nav-legend-dot.dot-flagged{background:var(--warning-soft);border-color:rgba(251,191,36,0.3)}

/* ── QUIZ ACTIONS & FOOTER ──────────────────────────────────────────────── */
.quiz-actions{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.quiz-footer{text-align:center;margin-top:auto;display:flex;justify-content:center;align-items:center;gap:16px;padding-top:12px}
.quiz-footer.mt-4{margin-top:28px}

.text-btn{background:none;border:none;color:var(--text-muted);font-size:13px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;transition:color 0.2s;font-family:inherit;text-decoration:none;-webkit-tap-highlight-color:transparent}
.text-btn:hover{color:var(--text)}
.justify-center{justify-content:center}

.status-msg{font-size:13px;color:var(--text-secondary)}
.status-msg.error{color:var(--danger)}
.status-msg.success{color:var(--success)}

/* ── OVERLAYS ───────────────────────────────────────────────────────────── */
.overlay{position:fixed;inset:0;background:rgba(6,8,14,0.94);backdrop-filter:var(--glass-blur);display:grid;place-items:center;z-index:100;padding:20px}
.overlay-card{background:var(--bg-card);border:1px solid var(--border);box-shadow:var(--shadow-lg),var(--shadow-glow);border-radius:var(--radius-xl);padding:40px 32px;text-align:center;max-width:480px;width:100%;animation:popIn 0.4s var(--transition-spring)}
.welcome-header{margin-bottom:20px}
.welcome-desc{color:var(--text-secondary);margin-bottom:28px;line-height:1.7;font-size:14px}

.rules-box{display:flex;justify-content:space-around;margin-bottom:28px;background:var(--bg-input);padding:20px 16px;border-radius:var(--radius-md);border:1px solid var(--border);gap:8px}
.rule-item{display:flex;flex-direction:column;gap:8px;font-size:12px;font-weight:600;color:var(--text);align-items:center}
.rule-item .icon{font-size:28px}

.spinner{width:36px;height:36px;border-radius:50%;border:3px solid var(--bg-hover);border-top-color:var(--primary);margin:0 auto 12px;animation:spin 0.7s linear infinite}

/* ── USP ROW (Landing) ──────────────────────────────────────────────────── */
.usp-row{display:flex;justify-content:center;gap:20px;margin:0 auto;max-width:600px;flex-wrap:wrap}
.usp-item{display:flex;flex-direction:column;align-items:center;gap:8px;font-size:12px;font-weight:600;color:var(--text-secondary)}
.usp-item .icon{font-size:22px;background:var(--bg-input);width:56px;height:56px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-md);border:1px solid var(--border);transition:all 0.3s}
.usp-item:hover .icon{border-color:var(--primary);box-shadow:0 0 24px var(--primary-glow);transform:translateY(-3px);background:var(--primary-soft)}

.landing-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* ── FEATURE GRID ───────────────────────────────────────────────────────── */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-top:8px}
.feature-card{padding:20px;background:var(--bg-input);border-radius:var(--radius-sm);border:1px solid var(--border);transition:all var(--transition-normal)}
.feature-card:hover{border-color:var(--border-hover);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.feature-card .feature-icon{font-size:24px;margin-bottom:10px}
.feature-card h4{margin-bottom:4px;font-size:14px;font-weight:700}
.feature-card p{font-size:12px;color:var(--text-secondary);line-height:1.5}

/* ── SPACING ────────────────────────────────────────────────────────────── */
.mt-4{margin-top:28px}.mt-3{margin-top:16px}.mt-2{margin-top:8px}
.mb-4{margin-bottom:24px}.mb-3{margin-bottom:16px}.mb-2{margin-bottom:8px}

/* ── LOGIN ──────────────────────────────────────────────────────────────── */
.login-card{padding:36px 28px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);position:relative}
.login-card::before{content:'';position:absolute;top:0;left:50%;width:120px;height:1px;background:linear-gradient(90deg,transparent,var(--primary),transparent);transform:translateX(-50%);opacity:0.5}
.quiz-form.stack{display:flex;flex-direction:column;gap:16px}

/* Password toggle */
.password-wrapper{position:relative}
.password-wrapper .quiz-input{padding-right:44px}
.password-toggle{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;display:flex;align-items:center;transition:color 0.2s}
.password-toggle:hover{color:var(--text)}

/* ── DASHBOARD STATS ────────────────────────────────────────────────────── */
.dash-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:10px;margin-bottom:20px}
.dash-stat-card{background:var(--bg-input);padding:20px 14px;border-radius:var(--radius-md);text-align:center;border:1px solid var(--border);transition:all var(--transition-normal);position:relative;overflow:hidden}
.dash-stat-card::after{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:opacity 0.3s}
.dash-stat-card:hover{border-color:var(--border-hover);transform:translateY(-2px)}
.dash-stat-card:hover::after{opacity:1}
.dash-stat-value{font-size:26px;font-weight:800;color:var(--primary);display:block;margin-bottom:4px;font-variant-numeric:tabular-nums}
.dash-stat-label{font-size:10px;text-transform:uppercase;color:var(--text-muted);font-weight:700;letter-spacing:1px}

/* ── DASHBOARD LIST ─────────────────────────────────────────────────────── */
.dash-list{display:flex;flex-direction:column;gap:8px}
.dash-list-item{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);transition:all var(--transition-normal)}
.dash-list-item:hover{border-color:var(--border-hover);background:var(--bg-hover)}
.student-info{display:flex;flex-direction:column;gap:2px;min-width:0}
.student-name{font-weight:600;color:var(--text);font-size:14px;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.score-pill{background:var(--bg-card);padding:4px 12px;border-radius:8px;font-size:14px;font-weight:800;color:var(--primary);border:1px solid var(--border);font-variant-numeric:tabular-nums;display:inline-block}

/* ── STATUS BADGES ──────────────────────────────────────────────────────── */
.status-badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:6px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:0.3px;white-space:nowrap}
.status-badge.clean,.status-badge.published{background:var(--success-soft);color:var(--success);border:1px solid rgba(52,211,153,0.2)}
.status-badge.violation,.status-badge.stopped{background:var(--danger-soft);color:var(--danger);border:1px solid rgba(248,113,113,0.2)}
.status-badge.draft{background:var(--warning-soft);color:var(--warning);border:1px solid rgba(251,191,36,0.2)}
.status-badge.paused{background:var(--accent-soft);color:var(--accent);border:1px solid rgba(56,189,248,0.2)}

/* ── TEACHER LIST ───────────────────────────────────────────────────────── */
.dash-list-item.teacher-item{flex-direction:column;align-items:flex-start;gap:12px;padding:18px}
.action-row{display:flex;gap:6px;flex-wrap:wrap;align-items:center}

/* ── SECTION ELEMENTS ───────────────────────────────────────────────────── */
.section-title{margin:0 0 16px;font-weight:700;font-size:17px;color:var(--text);display:flex;align-items:center;gap:10px}
.section-title::before{content:'';width:3px;height:18px;background:linear-gradient(180deg,var(--primary),var(--accent));border-radius:4px;flex-shrink:0}
.divider{height:1px;background:var(--border);margin:24px 0}

/* ── MOBILE TIPS ────────────────────────────────────────────────────────── */
.mobile-tips{margin-top:20px;text-align:center;color:var(--text-secondary);font-size:13px;background:var(--bg-raised);padding:16px;border-radius:var(--radius-sm);border:1px solid var(--border)}
.mobile-tips ul{list-style:none;padding:0;margin:8px 0 0;display:flex;justify-content:center;gap:8px;flex-wrap:wrap}
.mobile-tips li{background:var(--bg-input);padding:6px 12px;border-radius:6px;font-size:12px;font-weight:600;border:1px solid var(--border)}

/* ── TOAST ──────────────────────────────────────────────────────────────── */
.toast-container{position:fixed;top:20px;right:20px;z-index:10000;display:flex;flex-direction:column;gap:8px;pointer-events:none}
.toast{padding:14px 20px;border-radius:var(--radius-sm);background:var(--bg-card);border:1px solid var(--border);color:var(--text);font-size:14px;font-weight:500;box-shadow:var(--shadow-md);backdrop-filter:var(--glass-blur);animation:toastIn 0.4s var(--transition-spring);pointer-events:auto;display:flex;align-items:center;gap:10px;max-width:380px}
.toast.success{border-left:3px solid var(--success)}
.toast.error{border-left:3px solid var(--danger)}
.toast.warning{border-left:3px solid var(--warning)}
.toast.info{border-left:3px solid var(--accent)}
.toast.fade-out{animation:toastOut 0.3s ease-in forwards}

/* ── STATS (Result Page) ────────────────────────────────────────────────── */
.stats-row{display:flex;gap:10px;margin:20px 0;flex-wrap:wrap}
.stat-box{flex:1;min-width:100px;background:var(--bg-input);padding:20px 14px;border-radius:var(--radius-md);display:flex;flex-direction:column;gap:4px;text-align:center;border:1px solid var(--border);transition:all var(--transition-normal)}
.stat-box:hover{border-color:var(--border-hover);transform:translateY(-2px)}
.stat-label{font-size:10px;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.8px;font-weight:700}
.stat-value{font-size:28px;font-weight:800;color:var(--primary)}
.trophy-icon{font-size:56px;margin-bottom:16px;animation:bounce 2s infinite}
.full-width{width:100%}

/* ── SKELETON ───────────────────────────────────────────────────────────── */
.skeleton{background:linear-gradient(90deg,var(--bg-input) 25%,var(--bg-hover) 50%,var(--bg-input) 75%);background-size:200% 100%;animation:shimmer 1.5s ease-in-out infinite;border-radius:var(--radius-sm)}
.skeleton-text{height:16px;margin-bottom:8px;width:80%}
.skeleton-text.short{width:40%}
.skeleton-card{height:80px;margin-bottom:10px}

/* ── VISIBILITY ─────────────────────────────────────────────────────────── */
.is-hidden{display:none !important}
.hidden{display:none !important}
.hidden-mobile{display:none}
@media(min-width:600px){.hidden-mobile{display:inline}}

/* ── RESULT PAGE ────────────────────────────────────────────────────────── */
.result-hero{text-align:center;padding:40px 24px 32px}
.result-grade{display:inline-flex;align-items:center;justify-content:center;width:100px;height:100px;border-radius:50%;font-size:32px;font-weight:800;margin:0 auto 20px;position:relative}
.result-grade.excellent{background:var(--success-soft);color:var(--success);border:3px solid var(--success);box-shadow:0 0 40px var(--success-glow)}
.result-grade.good{background:var(--primary-soft);color:var(--primary);border:3px solid var(--primary);box-shadow:0 0 40px var(--primary-glow)}
.result-grade.average{background:var(--warning-soft);color:var(--warning);border:3px solid var(--warning);box-shadow:0 0 40px var(--warning-glow)}
.result-grade.poor{background:var(--danger-soft);color:var(--danger);border:3px solid var(--danger);box-shadow:0 0 40px var(--danger-glow)}
.result-message{font-size:15px;color:var(--text-secondary);margin-top:8px}

/* Confetti canvas */
#confetti-canvas{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:999}

/* ── EXAM ACTION BAR (bottom fixed on mobile) ───────────────────────────── */
.exam-bottom-bar{display:none}

/* ==========================================================================
   PC / DESKTOP ENHANCEMENTS (≥768px)
   ========================================================================== */

/* ── LANDING PAGE — HERO LAYOUT ─────────────────────────────────────────── */
@media(min-width:768px){
  /* Allow landing page to go wider */
  .centered-layout.landing-layout .quiz-container,
  .centered-layout.landing-layout>div:not(.toast-container){
    max-width:var(--max-width-mid);
  }

  .landing-card{
    padding:72px 48px;
  }
  .landing-card h1{
    font-size:38px;
    margin-bottom:12px;
  }
  .landing-card p{
    font-size:16px;
    max-width:560px;
  }

  .usp-row{gap:28px}
  .usp-item .icon{width:64px;height:64px;font-size:26px}
  .usp-item{font-size:13px}

  .landing-actions .quiz-btn{
    padding:14px 32px;font-size:15px;
  }

  .feature-grid{
    grid-template-columns:repeat(2,1fr);gap:16px;
  }
  .feature-card{padding:24px}
  .feature-card h4{font-size:15px}
  .feature-card p{font-size:13px}
}

@media(min-width:1024px){
  .centered-layout.landing-layout .quiz-container,
  .centered-layout.landing-layout>div:not(.toast-container){
    max-width:900px;
  }

  .landing-card{padding:80px 56px}
  .landing-card h1{font-size:44px;letter-spacing:-1px}

  .feature-grid{grid-template-columns:repeat(4,1fr)}
}

/* ── EXAM PAGE — SIDEBAR LAYOUT ON DESKTOP ──────────────────────────────── */
@media(min-width:900px){
  .exam-layout{
    display:grid;
    grid-template-columns:260px 1fr;
    gap:24px;
    max-width:var(--max-width-full);
    margin:0 auto;
    padding:20px;
    align-items:start;
  }

  .exam-layout .quiz-header{
    grid-column:1/-1;
    margin-bottom:0;
  }

  .exam-sidebar{
    position:sticky;
    top:80px;
    display:flex;
    flex-direction:column;
    gap:12px;
    order:1;
  }

  .exam-main-content{
    order:2;
    min-width:0;
  }

  /* When sidebar exists, nav should appear in the sidebar */
  .exam-sidebar .question-nav{
    margin-bottom:0;
  }
  .exam-sidebar .nav-legend{
    padding:8px 0;
  }

  .quiz-actions{
    gap:12px;
  }

  .option-card{padding:16px 20px}
  .option-card:hover{transform:translateX(6px)}
}

/* ── TEACHER PORTAL — TWO-COLUMN ON DESKTOP ─────────────────────────────── */
@media(min-width:1024px){
  .centered-layout.wide-layout .quiz-container,
  .centered-layout.wide-layout>div:not(.toast-container){
    max-width:var(--max-width-full);
  }

  .teacher-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
    align-items:start;
  }
  .teacher-grid .quiz-card{margin-bottom:0}
  .teacher-grid>.quiz-card.full-span{grid-column:1/-1}
}

/* ── RESULT PAGE — WIDER ON DESKTOP ─────────────────────────────────────── */
@media(min-width:768px){
  .centered-layout.result-layout .quiz-container,
  .centered-layout.result-layout>div:not(.toast-container){
    max-width:640px;
  }
  
  .result-grade{width:120px;height:120px;font-size:40px}
  .trophy-icon{font-size:72px}

  .result-stats-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:14px;
  }
}

/* ── DASHBOARD PAGE — SPLIT PANEL ON DESKTOP ────────────────────────────── */
@media(min-width:900px){
  .centered-layout.dash-full-layout .quiz-container,
  .centered-layout.dash-full-layout>div:not(.toast-container){
    max-width:var(--max-width-full);
  }

  .dash-split{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
    align-items:start;
  }
  .dash-split>.dash-panel{
    background:var(--bg-card);
    border:1px solid var(--border);
    border-radius:var(--radius-lg);
    padding:24px;
  }
}

/* ── STUDENT LOGIN — SPLIT LAYOUT ON DESKTOP ────────────────────────────── */
@media(min-width:768px){
  .centered-layout.student-layout .quiz-container,
  .centered-layout.student-layout>div:not(.toast-container){
    max-width:600px;
  }

  .login-card{
    padding:44px 40px;
  }
  .quiz-input{
    padding:14px 18px;
  }
}

/* ── GENERAL PC ENHANCEMENTS ────────────────────────────────────────────── */
@media(min-width:768px){
  .centered-layout{padding:40px 24px}
  .quiz-container{padding:20px}
  .quiz-card{padding:32px}
  .quiz-header{padding:14px 20px;border-radius:var(--radius-lg)}
  
  /* Wider buttons on PC */
  .quiz-btn{padding:13px 28px;font-size:14px}
  .quiz-btn.small{padding:9px 16px}
  
  /* Better form spacing on PC */
  .form-group{margin-bottom:18px}
  .input-group{gap:8px}
  .input-group label{font-size:12px}
  
  /* Hover micro-interaction for cards */
  .quiz-card:hover{box-shadow:var(--shadow-md),0 0 40px rgba(124,92,252,0.04)}
  .dash-stat-card:hover{box-shadow:var(--shadow-sm),0 0 20px rgba(124,92,252,0.06)}

  /* Better overlay on PC */
  .overlay-card{padding:48px 40px;max-width:500px}

  /* Toast position */
  .toast{max-width:420px}
}

@media(min-width:1024px){
  .centered-layout{padding:48px 32px}
  
  /* More spacious cards on large screens */
  .quiz-card{padding:36px}
  .landing-card{border-radius:var(--radius-xl)}
  .login-card{padding:48px 44px}

  .dash-grid{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px}
  .dash-stat-value{font-size:30px}
}

/* ── ANIMATIONS ─────────────────────────────────────────────────────────── */
@keyframes slideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes popIn{from{transform:scale(0.92);opacity:0}to{transform:scale(1);opacity:1}}
@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
@keyframes pulse{0%{box-shadow:0 0 0 0 var(--primary-glow)}70%{box-shadow:0 0 0 14px transparent}100%{box-shadow:0 0 0 0 transparent}}
@keyframes pulse-danger{0%,100%{box-shadow:0 0 0 0 var(--danger-glow)}50%{box-shadow:0 0 0 8px transparent}}
@keyframes bounce{0%,20%,50%,80%,100%{transform:translateY(0)}40%{transform:translateY(-14px)}60%{transform:translateY(-6px)}}
@keyframes shimmer{0%{background-position:-200% 0}100%{background-position:200% 0}}
@keyframes toastIn{from{opacity:0;transform:translateX(40px) scale(0.95)}to{opacity:1;transform:translateX(0) scale(1)}}
@keyframes toastOut{from{opacity:1;transform:translateX(0)}to{opacity:0;transform:translateX(40px)}}
@keyframes floatOrb{0%{transform:translate(0,0)}100%{transform:translate(30px,20px)}}
@keyframes slideIn{from{opacity:0;transform:translateX(-10px)}to{opacity:1;transform:translateX(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes confettiFall{0%{transform:translateY(-10vh) rotate(0deg);opacity:1}100%{transform:translateY(110vh) rotate(720deg);opacity:0}}
@keyframes gradeReveal{0%{transform:scale(0) rotate(-180deg);opacity:0}60%{transform:scale(1.15) rotate(10deg)}100%{transform:scale(1) rotate(0);opacity:1}}
@keyframes countUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

/* ── RESPONSIVE: MOBILE (<480px) ────────────────────────────────────────── */
@media(max-width:480px){
  .centered-layout{padding:8px 6px}
  .quiz-container{padding:6px}
  .quiz-card{padding:18px 14px;border-radius:var(--radius-md)}
  .landing-card{padding:28px 14px}
  .login-card{padding:24px 16px}
  .quiz-btn{padding:11px 16px;font-size:13px}
  .quiz-btn.small{padding:7px 10px;font-size:11px}
  .quiz-header{padding:10px 12px;flex-wrap:wrap;gap:8px;border-radius:var(--radius-sm)}
  .timer-badge{padding:6px 12px;font-size:14px}
  .question-text{font-size:16px}
  .option-card{padding:12px 14px;gap:10px}
  .option-indicator{width:32px;height:32px;font-size:13px;border-radius:8px}
  .rules-box{flex-direction:column;gap:12px;padding:16px 12px}
  .rule-item{flex-direction:row;justify-content:center;gap:10px}
  .stats-row{flex-direction:column}
  .usp-row{gap:14px}
  .usp-item .icon{width:48px;height:48px}
  .toast-container{top:auto;bottom:12px;right:8px;left:8px}
  .toast{max-width:100%;font-size:13px;padding:12px 14px}
  .overlay-card{padding:28px 20px;margin:12px}
  .question-nav .nav-dot{width:32px;height:32px;font-size:11px}
  .dash-grid{grid-template-columns:repeat(2,1fr);gap:8px}
  .dash-stat-value{font-size:22px}
  .feature-grid{grid-template-columns:1fr}
  h1{font-size:22px}
  .quiz-brand.large{font-size:22px}
  
  /* Bottom action bar on mobile exam */
  .exam-bottom-bar{display:flex;position:fixed;bottom:0;left:0;right:0;background:var(--bg-glass);backdrop-filter:var(--glass-blur);border-top:1px solid var(--border);padding:10px 12px;gap:8px;z-index:50;justify-content:space-between;animation:slideUp 0.3s ease}
  .exam-bottom-bar .quiz-btn{flex:1}
}

@media(max-width:600px){
  .dash-list-item{flex-direction:column;align-items:flex-start;gap:10px}
  .dash-list-item>div{width:100%}
  .action-row{justify-content:flex-start;width:100%}
  .landing-actions{flex-direction:column;width:100%}
  .landing-actions .quiz-btn{width:100%}
}

@media(min-width:601px){
  .dash-list-item.teacher-item{flex-direction:row;align-items:center;justify-content:space-between}
}

/* ── PRINT ──────────────────────────────────────────────────────────────── */
@media print{
  body{background:white;color:#000}
  body::before,body::after{display:none}
  .quiz-btn,.toast-container,.quiz-footer{display:none !important}
  .quiz-card{box-shadow:none;border:1px solid #ddd;break-inside:avoid}
}