:root {
    --brand-blue: #0088cc;
    --brand-blue-dark: #006fa8;
    --brand-teal: #06D6A0;
    --navy: #141c29;
    --text-muted: #626262;
    --border: #cfd8dd;
    --bg-light: #f3f5f6;
    --danger: #b3261e;
    --danger-bg: #ffe8e8;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg-light);
    color: #2c2c2c;
}
a { color: var(--brand-blue); }

.site-header {
    background: var(--navy);
    color: #fff;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 500;
}
.site-header .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.1rem; color: #fff; text-decoration: none; }
.site-header .brand img { height: 32px; }

/* Desktop horizontal nav (hidden on mobile) */
.site-header nav.desktop-nav { display: flex; align-items: center; }
.site-header nav.desktop-nav a { color: #cfd8dd; text-decoration: none; margin-left: 22px; font-size: 0.92rem; }
.site-header nav.desktop-nav a:hover { color: #fff; }

/* Hamburger toggle (hidden on desktop) */
.nav-toggle {
    display: none;
    background: none; border: none; cursor: pointer; padding: 6px;
    flex-direction: column; gap: 4px;
}
.nav-toggle span { width: 22px; height: 2px; background: #fff; display: block; border-radius: 2px; }

/* Mobile slide-in drawer */
.mobile-nav-overlay {
    display: none; position: fixed; inset: 0; background: rgba(20,28,41,0.6); z-index: 600;
}
.mobile-nav-overlay.open { display: block; }
.mobile-nav-drawer {
    position: fixed; top: 0; right: -280px; width: 260px; height: 100%;
    background: var(--navy); z-index: 601; transition: right 0.25s ease;
    padding: 20px; display: flex; flex-direction: column; gap: 4px;
}
.mobile-nav-drawer.open { right: 0; }
.mobile-nav-drawer a {
    color: #cfd8dd; text-decoration: none; padding: 12px 10px; font-size: 0.95rem;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.mobile-nav-drawer a:hover { color: #fff; }
.mobile-nav-close { align-self: flex-end; background: none; border: none; color: #fff; font-size: 1.4rem; cursor: pointer; margin-bottom: 10px; }

@media (max-width: 768px) {
    .site-header nav.desktop-nav { display: none; }
    .nav-toggle { display: flex; }
}

.hero {
    background: linear-gradient(135deg, var(--navy), #1c2430);
    color: #fff;
    padding: 60px 32px;
    text-align: center;
}
.hero h1 { font-size: 2rem; margin-bottom: 10px; }
.hero p { color: #cfd8dd; max-width: 560px; margin: 0 auto; }

.container { max-width: 1000px; margin: 0 auto; padding: 40px 24px; }
@media (max-width: 600px) {
    .container { padding: 24px 16px; }
    .hero { padding: 40px 20px; }
    .hero h1 { font-size: 1.5rem; }
    .auth-card { padding: 26px 20px; margin: 20px auto; }
    .dashboard-panel { padding: 18px; }
}

.olympiad-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; margin-top: 24px; }
.olympiad-card {
    background: #fff; border-radius: 14px; padding: 22px;
    box-shadow: 0 2px 12px rgba(20,28,41,0.06);
}
.olympiad-card h3 { margin: 0 0 6px; color: var(--navy); }
.olympiad-card .meta { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 12px; }
.olympiad-card .fee { font-weight: 700; color: var(--brand-blue); }

.badge { padding: 3px 10px; border-radius: 20px; font-size: 0.72rem; font-weight: 600; }
.badge-free { background: #e6faf3; color: #06805e; }
.badge-paid { background: #fff8e1; color: #8a6100; }

.btn-primary {
    display: inline-block; background: var(--brand-blue); color: #fff; border: none;
    padding: 11px 20px; border-radius: 8px; font-size: 0.95rem; cursor: pointer;
    text-decoration: none; text-align: center; transition: background 0.15s ease;
}
.btn-primary:hover { background: var(--brand-blue-dark); color: #fff; }

.auth-card {
    background: #fff; border-radius: 14px; padding: 36px; max-width: 420px; margin: 40px auto;
    box-shadow: 0 8px 30px rgba(20,28,41,0.1);
}
.auth-card h1 { color: var(--navy); font-size: 1.3rem; margin-top: 0; }
.auth-card .btn-primary { width: 100%; margin-top: 20px; }
.auth-card .switch-link { text-align: center; margin-top: 16px; font-size: 0.88rem; color: var(--text-muted); }

/* Universal form styling — applies inside ANY container (auth-card,
   dashboard-panel, or plain), so a form never breaks depending on which
   wrapper class happens to be around it. */
form label {
    display: block; font-size: 0.85rem; color: var(--text-muted);
    margin: 16px 0 4px; font-weight: 600;
}
form label:first-of-type { margin-top: 4px; }
form input[type=text], form input[type=email], form input[type=tel],
form input[type=password], form input[type=number], form input[type=date],
form input[type=file], form select, form textarea {
    display: block; width: 100%; padding: 10px 12px; border: 1px solid var(--border);
    border-radius: 8px; font-size: 0.95rem; font-family: inherit; box-sizing: border-box;
}
form input:focus, form select:focus, form textarea:focus {
    outline: none; border-color: var(--brand-blue);
}

.dob-row { display: grid; grid-template-columns: 1fr 1.4fr 1fr; gap: 8px; }
.dob-row select { width: 100%; }

.password-field { position: relative; }
.password-field input { padding-right: 42px; }
.password-toggle {
    position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
    background: none; border: none; color: var(--text-muted); cursor: pointer;
    padding: 4px; font-size: 0.95rem;
}
.password-toggle:hover { color: var(--navy); }

.alert { padding: 10px 14px; border-radius: 8px; font-size: 0.88rem; margin-bottom: 14px; }
.alert-error { background: var(--danger-bg); color: var(--danger); }
.alert-success { background: #e6faf3; color: #06805e; }

.dashboard-panel { background: #fff; border-radius: 14px; padding: 26px; margin-bottom: 20px; box-shadow: 0 2px 12px rgba(20,28,41,0.06); }
.dashboard-panel h2 { color: var(--navy); margin-top: 0; font-size: 1.1rem; margin-bottom: 4px; }
.dashboard-panel .btn-primary { margin-top: 8px; }

.site-footer { text-align: center; padding: 30px; color: var(--text-muted); font-size: 0.85rem; }