/* ===== ExamArena — style.css ===== */
:root{
  --primary:#4f46e5;
  --primary-dark:#4338ca;
  --accent:#f59e0b;
  --bg:#f8fafc;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#64748b;
  --border:#e2e8f0;
  --green:#16a34a;
  --red:#dc2626;
  --radius:14px;
  --shadow:0 6px 24px rgba(15,23,42,.08);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}

.container{max-width:1120px;margin:0 auto;padding:0 20px}
.container.narrow{max-width:820px}
.hidden{display:none !important}

/* ===== Header ===== */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:64px}
.logo{font-size:1.35rem;font-weight:800;text-decoration:none;color:var(--text)}
.logo span{color:var(--primary)}
.nav{display:flex;gap:22px;margin-left:auto}
.nav a{text-decoration:none;color:var(--muted);font-weight:600;font-size:.95rem;transition:color .2s}
.nav a:hover{color:var(--primary)}
.nav-cta{flex-shrink:0}
.hamburger{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text)}

/* ===== Buttons ===== */
.btn{display:inline-block;padding:11px 22px;border-radius:10px;font-weight:700;font-size:.95rem;cursor:pointer;border:2px solid transparent;transition:all .2s;text-decoration:none;text-align:center}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}

/* ===== Hero ===== */
.hero{background:linear-gradient(135deg,#eef2ff 0%,#fdf4ff 60%,#fff7ed 100%);padding:72px 0 84px}
.hero-inner{display:grid;grid-template-columns:1.2fr .9fr;gap:48px;align-items:center}
.tagline{color:var(--primary);font-weight:700;margin-bottom:10px}
.hero h1{font-size:clamp(2.2rem,5vw,3.4rem);line-height:1.15;margin-bottom:16px}
.gradient-text{background:linear-gradient(90deg,var(--primary),#db2777,#f59e0b);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{color:var(--muted);font-size:1.08rem;max-width:520px;margin-bottom:26px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.stats{display:flex;gap:36px}
.stats div{display:flex;flex-direction:column}
.stats strong{font-size:1.4rem;color:var(--primary)}
.stats span{font-size:.85rem;color:var(--muted)}

.hero-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px}
.countdown-box h3{margin-bottom:14px;font-size:1.05rem}
.countdown-box select{width:100%;padding:10px;border:1px solid var(--border);border-radius:8px;margin-bottom:16px;font-size:.95rem}
.countdown{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;text-align:center}
.countdown div{background:#eef2ff;border-radius:10px;padding:12px 4px}
.countdown span{display:block;font-size:1.5rem;font-weight:800;color:var(--primary)}
.countdown small{color:var(--muted);font-size:.72rem;text-transform:uppercase}

/* ===== Sections ===== */
.section{padding:76px 0}
.section.alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-title{text-align:center;font-size:clamp(1.6rem,3.5vw,2.2rem);margin-bottom:8px}
.section-sub{text-align:center;color:var(--muted);margin-bottom:40px}

/* ===== Exams grid ===== */
.exam-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:20px}
.exam-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:transform .2s}
.exam-card:hover{transform:translateY(-4px)}
.exam-card .e-icon{font-size:2rem}
.exam-card h3{margin:8px 0 6px;font-size:1.1rem}
.exam-card p{font-size:.88rem;color:var(--muted);margin-bottom:12px}
.exam-card ul{margin:0 0 14px 18px;font-size:.85rem;color:var(--muted)}
.exam-card .btn{padding:8px 16px;font-size:.85rem;width:100%}

/* ===== Features ===== */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.feature-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:transform .2s}
.feature-card:hover{transform:translateY(-4px)}
.f-icon{font-size:1.9rem;margin-bottom:10px}
.feature-card h3{margin-bottom:6px}
.feature-card p{color:var(--muted);font-size:.92rem}

/* ===== Quiz ===== */
.form-row{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.form-row select,.form-row input{padding:11px 14px;border:1px solid var(--border);border-radius:10px;font-size:.95rem;background:#fff;flex:1;min-width:160px}
.hint{text-align:center;color:var(--muted);font-size:.88rem;margin-top:12px}

.quiz-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);margin-top:28px}
.quiz-top{display:flex;justify-content:space-between;font-weight:700;color:var(--muted);font-size:.9rem;margin-bottom:10px}
.q-timer{color:var(--primary)}
.q-timer.low{color:var(--red);animation:blink 1s infinite}
@keyframes blink{50%{opacity:.35}}
.progress-bar{height:8px;background:var(--border);border-radius:99px;overflow:hidden;margin-bottom:20px}
.progress-bar div{height:100%;background:linear-gradient(90deg,var(--primary),#db2777);width:0;transition:width .3s}
.question-text{font-size:1.15rem;margin-bottom:18px}
.options{display:grid;gap:10px}
.option{text-align:left;padding:13px 16px;border:2px solid var(--border);border-radius:10px;background:#fff;cursor:pointer;font-size:.98rem;transition:all .15s;font-family:inherit}
.option:hover:not(:disabled){border-color:var(--primary);background:#eef2ff}
.option.correct{border-color:var(--green);background:#dcfce7}
.option.wrong{border-color:var(--red);background:#fee2e2}
.option:disabled{cursor:default}
.feedback{margin-top:14px;font-weight:700;min-height:24px}
.feedback .ok{color:var(--green)}
.feedback .no{color:var(--red)}
.explain{display:block;font-weight:500;color:var(--muted);margin-top:4px;font-size:.9rem}
.quiz-actions{margin-top:18px;text-align:right}
.result-score{font-size:2.4rem;font-weight:800;color:var(--primary);margin:10px 0}
#resultBox{text-align:center}

/* ===== Current affairs ===== */
.ca-list{list-style:none;display:grid;gap:10px}
.ca-list li{background:var(--bg);border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:10px;padding:12px 16px;font-size:.95rem}

/* ===== Study plan ===== */
.plan-output{margin-top:28px;display:grid;gap:14px}
.plan-day{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px}
.plan-day h4{color:var(--primary);margin-bottom:6px}
.plan-day p{color:var(--muted);font-size:.93rem}

/* ===== Footer ===== */
.footer{background:var(--text);color:#cbd5e1;padding:34px 0;text-align:center;margin-top:20px}
.footer .hint{color:#94a3b8}

/* ===== Responsive ===== */
@media(max-width:860px){
  .hero-inner{grid-template-columns:1fr}
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:18px 20px;border-bottom:1px solid var(--border);gap:14px}
  .nav.open{display:flex}
  .hamburger{display:block;margin-left:auto}
  .nav-cta{display:none}
  .stats{gap:22px}
}