@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Outfit:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* ============================================================
   AquilaCyber Defenders — Design System
   Brand: Navy #1C2147 · Orange #FF6B2C · White #FFFFFF
   ============================================================ */

:root {
    /* ── Brand Colours ── */
    --brand-navy:        #1C2147;
    --brand-navy-deep:   #13183A;
    --brand-navy-mid:    #252B5C;
    --brand-orange:      #FF6B2C;
    --brand-orange-deep: #E8500A;
    --brand-orange-glow: rgba(255, 107, 44, 0.25);
    --brand-white:       #FFFFFF;

    /* ── Dark Mode Surfaces ── */
    --bg-base:      #0D1022;
    --bg-primary:   #111428;
    --bg-secondary: rgba(28, 33, 71, 0.55);
    --bg-tertiary:  rgba(37, 43, 92, 0.7);
    --bg-card:      rgba(20, 24, 55, 0.8);

    /* ── Text ── */
    --text-primary:   #F0F2FF;
    --text-secondary: #9BA4CC;
    --text-muted:     #5A6394;

    /* ── Accent (orange as primary action colour) ── */
    --accent:          #FF6B2C;
    --accent-hover:    #FF8B52;
    --accent-navy:     #3D4FAF;
    --accent-purple:   #7C4DFF;

    /* ── Borders ── */
    --border:           rgba(255, 107, 44, 0.12);
    --border-highlight: rgba(255, 107, 44, 0.4);
    --border-navy:      rgba(61, 79, 175, 0.3);

    /* ── Status ── */
    --success: #00E676;
    --danger:  #FF1744;
    --warning: #FF9800;

    /* ── Typography ── */
    --font-sans:    'Space Grotesk', 'Outfit', system-ui, sans-serif;
    --font-display: 'Outfit', system-ui, sans-serif;
    --font-mono:    'Share Tech Mono', 'Fira Code', monospace;

    /* ── Effects ── */
    --shadow-glow:        0 0 24px rgba(255, 107, 44, 0.2);
    --shadow-glow-hover:  0 0 40px rgba(255, 107, 44, 0.35);
    --shadow-panel:       0 8px 32px rgba(0, 0, 0, 0.45);
    --shadow-navy:        0 4px 20px rgba(13, 16, 34, 0.6);

    /* ── Layout ── */
    --nav-width: 240px;
}

/* ── Light mode ─────────────────────────────────────────── */
[data-theme="light"] {
    --bg-base:      #EEF0F8;
    --bg-primary:   #FFFFFF;
    --bg-secondary: rgba(255, 255, 255, 0.9);
    --bg-tertiary:  rgba(238, 240, 248, 0.9);
    --bg-card:      rgba(255, 255, 255, 0.95);

    --text-primary:   #0D1022;
    --text-secondary: #3D4FAF;
    --text-muted:     #7A83B0;

    --border:           rgba(255, 107, 44, 0.15);
    --border-highlight: rgba(255, 107, 44, 0.45);
    --border-navy:      rgba(28, 33, 71, 0.15);

    --shadow-glow:       0 4px 20px rgba(255, 107, 44, 0.15);
    --shadow-glow-hover: 0 8px 32px rgba(255, 107, 44, 0.25);
    --shadow-panel:      0 4px 24px rgba(0, 0, 0, 0.08);
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

* {
    transition:
        background-color 0.3s ease,
        border-color 0.3s ease,
        color 0.3s ease,
        box-shadow 0.25s ease;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    background-image:
        radial-gradient(ellipse at 10% 20%,  rgba(255,107,44,0.06), transparent 40%),
        radial-gradient(ellipse at 90% 80%,  rgba(28,33,71,0.3),   transparent 40%);
    background-attachment: fixed;
}

/* ── With sidebar nav ─ */
body.has-nav {
    padding-left: var(--nav-width);
}

@media (max-width: 768px) {
    body.has-nav { padding-left: 0; padding-top: 60px; }
}

h1,h2,h3,h4,h5,h6 {
    margin-top: 0;
    color: var(--text-primary);
    font-weight: 700;
    font-family: var(--font-display);
    letter-spacing: -0.3px;
}

h1 {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

h2 { font-size: 1.35rem; font-weight: 700; }
h3 { font-size: 1.05rem; font-weight: 600; }

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s, text-shadow 0.2s;
}
a:hover { color: var(--accent-hover); }

label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
}

/* ============================================================
   Layout Container
   ============================================================ */
.container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 36px 24px;
}

/* ============================================================
   Global Navigation Sidebar
   ============================================================ */
.aq-nav {
    position: fixed;
    top: 0; left: 0;
    width: var(--nav-width);
    height: 100vh;
    background: var(--brand-navy-deep);
    border-right: 1px solid rgba(255,107,44,0.15);
    display: flex;
    flex-direction: column;
    z-index: 200;
    overflow: hidden;
}

/* Subtle orange glow strip on right edge */
.aq-nav::after {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 1px; height: 100%;
    background: linear-gradient(to bottom, transparent, var(--accent), transparent);
    opacity: 0.3;
}

/* ── Brand block ── */
.aq-nav-brand {
    padding: 22px 20px 18px;
    border-bottom: 1px solid rgba(255,107,44,0.1);
    flex-shrink: 0;
}

.aq-nav-wordmark {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.aq-nav-wordmark .org {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
}

.aq-nav-wordmark .product {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 900;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--brand-white);
    line-height: 1;
}

.aq-nav-wordmark .product span {
    color: var(--brand-orange);
}

/* ── Player status pill ── */
.aq-nav-player {
    margin: 14px 16px;
    padding: 10px 12px;
    background: rgba(255,107,44,0.08);
    border: 1px solid rgba(255,107,44,0.15);
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.aq-nav-avatar {
    width: 32px; height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--brand-orange), var(--brand-navy-mid));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.aq-nav-player-info { flex: 1; min-width: 0; }
.aq-nav-player-name {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.aq-nav-player-score {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent);
    font-weight: 600;
}

/* ── Nav links ── */
.aq-nav-links {
    flex: 1;
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow-y: auto;
}

.aq-nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.18s;
    text-decoration: none;
    position: relative;
}

.aq-nav-link:hover {
    background: rgba(255,107,44,0.08);
    color: var(--text-primary);
}

.aq-nav-link.active {
    background: rgba(255,107,44,0.12);
    color: var(--accent);
    border-left: 2px solid var(--accent);
    padding-left: 10px;
}

.aq-nav-link .nav-icon {
    width: 18px;
    text-align: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.aq-nav-divider {
    height: 1px;
    background: rgba(255,255,255,0.06);
    margin: 6px 12px;
}

.aq-nav-section-label {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 4px 12px;
    margin-top: 6px;
}

/* ── Nav footer ── */
.aq-nav-footer {
    padding: 14px 12px;
    border-top: 1px solid rgba(255,107,44,0.08);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

/* ── Mobile top bar ── */
.aq-topbar {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 60px;
    background: var(--brand-navy-deep);
    border-bottom: 1px solid rgba(255,107,44,0.15);
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 200;
}

.aq-topbar-brand {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 900;
    text-transform: uppercase;
    color: var(--brand-white);
}
.aq-topbar-brand span { color: var(--brand-orange); }

.aq-hamburger {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    padding: 8px;
    border-radius: 6px;
    line-height: 1;
    font-size: 1.3rem;
}

/* Mobile nav drawer */
.aq-nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 199;
}

@media (max-width: 768px) {
    .aq-nav {
        transform: translateX(-100%);
        transition: transform 0.28s cubic-bezier(0.4,0,0.2,1);
    }
    .aq-nav.open { transform: translateX(0); }
    .aq-topbar { display: flex; }
    .aq-nav-overlay.open { display: block; }
}

/* ============================================================
   Challenge Page Header Partial
   ============================================================ */
.challenge-page-header {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 20px 24px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    position: relative;
    overflow: hidden;
}

.challenge-page-header::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--accent);
    border-radius: 3px 0 0 3px;
}

.cph-left { display: flex; flex-direction: column; gap: 4px; }
.cph-breadcrumb {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.cph-breadcrumb a { color: var(--accent); }
.cph-title {
    font-size: 1.2rem;
    font-weight: 800;
    margin: 0;
    color: var(--text-primary);
}
.cph-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.cph-right { display: flex; align-items: center; gap: 10px; }
.cph-points {
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
}
.cph-points-label {
    font-size: 0.68rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    text-align: right;
}

/* ============================================================
   Glass Panel
   ============================================================ */
.glass-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 28px;
    box-shadow: var(--shadow-panel);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    margin-bottom: 22px;
    position: relative;
    overflow: hidden;
}

.glass-panel::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,107,44,0.25), transparent);
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 22px;
    background: rgba(255,107,44,0.07);
    border: 1px solid var(--accent);
    color: var(--accent);
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.82rem;
    cursor: pointer;
    font-family: var(--font-sans);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    position: relative;
    overflow: hidden;
    transition: all 0.22s cubic-bezier(0.4,0,0.2,1);
    text-decoration: none;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,107,44,0.15), transparent);
    transition: left 0.45s;
}
.btn:hover::before { left: 100%; }

.btn:hover {
    background: rgba(255,107,44,0.15);
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
    color: var(--accent);
}

.btn-primary {
    background: linear-gradient(135deg, var(--brand-orange), var(--brand-orange-deep));
    color: #fff;
    border: none;
    box-shadow: 0 4px 14px rgba(255,107,44,0.3);
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-hover), var(--brand-orange));
    box-shadow: 0 6px 20px rgba(255,107,44,0.45);
    color: #fff;
    transform: translateY(-2px);
}

.btn-navy {
    background: rgba(28,33,71,0.5);
    border-color: var(--border-navy);
    color: var(--text-secondary);
}
.btn-navy:hover {
    background: rgba(28,33,71,0.8);
    color: var(--text-primary);
    box-shadow: none;
}

/* ============================================================
   Forms
   ============================================================ */
input, textarea, select {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    margin-bottom: 14px;
    transition: all 0.2s;
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--bg-secondary);
    box-shadow: 0 0 0 3px rgba(255,107,44,0.12);
}

input::placeholder { color: var(--text-muted); }

/* ============================================================
   Challenge Cards — Dashboard Grid
   ============================================================ */
.challenge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 18px;
}

.challenge-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 22px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

/* Category colour strip on left */
.challenge-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 2px;
    background: var(--accent);
    opacity: 0.5;
    transition: opacity 0.3s;
}

.challenge-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-panel), 0 0 0 1px rgba(255,107,44,0.2);
    border-color: var(--border-highlight);
}
.challenge-card:hover::before { opacity: 1; }

.challenge-card.solved {
    border-color: rgba(0,230,118,0.25);
    background: linear-gradient(160deg, var(--bg-card), rgba(0,230,118,0.04));
}
.challenge-card.solved::before { background: var(--success); opacity: 1; }
.challenge-card.solved:hover { box-shadow: 0 10px 32px rgba(0,230,118,0.12); }

.challenge-type {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent);
    font-weight: 600;
}

.challenge-card h3 {
    margin: 8px 0 6px;
    font-size: 0.98rem;
    color: var(--text-primary);
    font-weight: 700;
}

.challenge-card p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

/* Solve count pill */
.solve-count-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.7rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2px 8px;
    margin-top: 8px;
}

/* ============================================================
   Difficulty Badges
   ============================================================ */
.difficulty-badge {
    padding: 3px 9px;
    border-radius: 20px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-family: var(--font-mono);
}
.difficulty-easy   { background: rgba(0,230,118,0.1);  color: var(--success); border: 1px solid rgba(0,230,118,0.2); }
.difficulty-medium { background: rgba(255,152,0,0.1);  color: var(--warning); border: 1px solid rgba(255,152,0,0.2); }
.difficulty-hard   { background: rgba(255,23,68,0.1);  color: var(--danger);  border: 1px solid rgba(255,23,68,0.2); }

/* ============================================================
   Status Badges
   ============================================================ */
.status-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    font-family: var(--font-mono);
}
.status-solved  { background: rgba(0,230,118,0.12); color: var(--success); border: 1px solid rgba(0,230,118,0.25); }
.status-locked  { background: rgba(255,107,44,0.08); color: var(--text-muted); border: 1px solid var(--border); }

/* ============================================================
   Progress Bar
   ============================================================ */
.progress-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin: 14px 0;
}
.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--brand-orange), var(--brand-orange-deep));
    border-radius: 4px;
    transition: width 1.4s cubic-bezier(0.4,0,0.2,1);
    position: relative;
}
.progress-fill::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.15) 25%, transparent 25%, transparent 50%,
        rgba(255,255,255,0.15) 50%, rgba(255,255,255,0.15) 75%, transparent 75%, transparent);
    background-size: 18px 18px;
    animation: stripes 0.8s linear infinite;
}
@keyframes stripes {
    from { background-position: 0 0; }
    to   { background-position: 18px 0; }
}

/* ============================================================
   Timer & Score
   ============================================================ */
.timer-display {
    font-family: var(--font-mono);
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 3px;
}
.timer-display.countdown-ending { color: var(--danger); animation: pulse-danger 1s infinite; }
@keyframes pulse-danger {
    0%,100% { opacity: 1; }
    50%      { opacity: 0.6; }
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
}

/* ============================================================
   Score Breakdown (Priority 5 — context for score number)
   ============================================================ */
.score-breakdown {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    margin-top: 6px;
}
.score-breakdown .sb-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
}
.score-breakdown .sb-positive { color: var(--success); }
.score-breakdown .sb-negative { color: var(--danger); }
.score-breakdown .sb-total    { color: var(--accent); font-weight: 700; border-top: 1px solid var(--border); padding-top: 3px; }

/* ============================================================
   System Status
   ============================================================ */
.system-status {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 0.75rem;
    color: var(--success);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}
.system-status::before {
    content: '';
    display: block;
    width: 7px; height: 7px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse-green 1.5s infinite;
}
@keyframes pulse-green {
    0%   { box-shadow: 0 0 0 0 rgba(0,230,118,0.6); }
    70%  { box-shadow: 0 0 0 8px rgba(0,230,118,0); }
    100% { box-shadow: 0 0 0 0 rgba(0,230,118,0); }
}

/* ============================================================
   Toast Notifications
   ============================================================ */
.toast {
    position: fixed;
    bottom: 28px; right: 28px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px 20px;
    box-shadow: 0 12px 32px rgba(0,0,0,0.5);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.88rem;
    z-index: 1100;
    display: flex;
    align-items: center;
    gap: 10px;
    backdrop-filter: blur(12px);
    max-width: 340px;
    animation: toastIn 0.4s cubic-bezier(0.175,0.885,0.32,1.275);
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error   { border-left: 3px solid var(--danger); }
@keyframes toastIn {
    from { transform: translateX(110%); opacity: 0; }
    to   { transform: translateX(0);    opacity: 1; }
}

/* ── First-blood toast ── */
.first-blood-toast {
    position: fixed;
    top: 50%; left: 50%;
    transform: translate(-50%,-50%) scale(0.85);
    background: linear-gradient(135deg, rgba(13,16,34,0.98), rgba(28,33,71,0.98));
    border: 1px solid rgba(255,107,44,0.6);
    border-radius: 16px;
    padding: 28px 40px;
    text-align: center;
    z-index: 2000;
    pointer-events: none;
    opacity: 0;
    transition: all 0.35s cubic-bezier(0.175,0.885,0.32,1.275);
    box-shadow: 0 0 60px rgba(255,107,44,0.3), 0 24px 48px rgba(0,0,0,0.7);
    min-width: 320px;
}
.first-blood-toast.show {
    opacity: 1;
    transform: translate(-50%,-50%) scale(1);
}
.first-blood-toast .fbt-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 6px;
}
.first-blood-toast .fbt-icon { font-size: 2.5rem; margin-bottom: 6px; }
.first-blood-toast .fbt-chall {
    font-size: 1.1rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 4px;
}
.first-blood-toast .fbt-who {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-secondary);
}

/* ============================================================
   Theme Toggle
   ============================================================ */
.theme-toggle {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    padding: 7px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}
.theme-toggle:hover {
    background: rgba(255,107,44,0.08);
    color: var(--accent);
    border-color: var(--border-highlight);
}

/* ============================================================
   Keyboard shortcut hint
   ============================================================ */
.kbd {
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 5px;
    padding: 3px 7px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-secondary);
    box-shadow: 0 2px 0 rgba(0,0,0,0.4);
}

/* ============================================================
   Leaderboard — Live Board (Priority 3)
   ============================================================ */
.lb-table { width: 100%; border-collapse: collapse; }
.lb-table th {
    padding: 10px 14px;
    text-align: left;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.lb-table td {
    padding: 13px 14px;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    font-size: 0.88rem;
    vertical-align: middle;
    transition: background 0.2s;
}
.lb-table tr:hover td { background: rgba(255,107,44,0.03); }
.lb-table tr:last-child td { border-bottom: none; }
.lb-table tr.current-row td { background: rgba(255,107,44,0.06) !important; }
.lb-table tr.new-entry td { animation: rowFlash 0.8s ease; }
@keyframes rowFlash {
    0%  { background: rgba(255,107,44,0.2); }
    100%{ background: transparent; }
}

/* Rank change badge */
.rank-change {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 700;
    padding: 1px 5px;
    border-radius: 4px;
    margin-left: 4px;
}
.rank-change.up   { background: rgba(0,230,118,0.12); color: var(--success); }
.rank-change.down { background: rgba(255,23,68,0.12);  color: var(--danger); }
.rank-change.same { color: var(--text-muted); }

.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px; height: 28px;
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.78rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-family: var(--font-mono);
}
.rank-1 { background: #FFD700; color: #000; box-shadow: 0 0 12px rgba(255,215,0,0.4); }
.rank-2 { background: #C0C0C0; color: #000; }
.rank-3 { background: #CD7F32; color: #fff; }

/* Team badge */
.team-badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    font-family: var(--font-mono);
    padding: 2px 6px;
    border-radius: 8px;
    background: rgba(255,107,44,0.1);
    border: 1px solid rgba(255,107,44,0.2);
    color: var(--accent);
    margin-left: 5px;
    white-space: nowrap;
}

/* Solve bar */
.solve-bar { display: flex; align-items: center; gap: 8px; }
.solve-track { flex: 1; height: 4px; background: var(--bg-tertiary); border-radius: 2px; overflow: hidden; max-width: 80px; }
.solve-fill  { height: 100%; background: var(--accent); border-radius: 2px; }

/* View toggle */
.view-toggle { display: flex; gap: 3px; background: var(--bg-tertiary); border: 1px solid var(--border); border-radius: 8px; padding: 3px; }
.view-btn {
    padding: 5px 16px;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 700;
    font-family: var(--font-sans);
    background: none;
    color: var(--text-muted);
    transition: all 0.18s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.view-btn.active { background: var(--accent); color: #000; }

/* ============================================================
   Animations
   ============================================================ */
.fade-in {
    animation: fadeSlide 0.5s cubic-bezier(0.4,0,0.2,1) forwards;
    opacity: 0;
}
@keyframes fadeSlide {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: translateY(0); }
}

.challenge-card:nth-child(1) { animation-delay: 0.05s; }
.challenge-card:nth-child(2) { animation-delay: 0.1s; }
.challenge-card:nth-child(3) { animation-delay: 0.15s; }
.challenge-card:nth-child(4) { animation-delay: 0.2s; }
.challenge-card:nth-child(5) { animation-delay: 0.25s; }
.challenge-card:nth-child(6) { animation-delay: 0.3s; }

/* ============================================================
   Hint container
   ============================================================ */
.hint-title { letter-spacing: 1px; text-transform: uppercase; font-size: 0.8rem; }

/* ============================================================
   Code pill / team code
   ============================================================ */
.code-pill {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px 7px;
    color: var(--text-secondary);
    letter-spacing: 0.1em;
}

/* ============================================================
   Responsive — Mobile first pass (Priority 5)
   ============================================================ */
@media (max-width: 900px) {
    .challenge-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
}

@media (max-width: 640px) {
    .container { padding: 20px 14px; }
    h1 { font-size: 1.6rem; }
    .glass-panel { padding: 18px 16px; }
    .challenge-grid { grid-template-columns: 1fr; gap: 12px; }
    .stat-value { font-size: 2.2rem; }
    .timer-display { font-size: 1.5rem; }
    .challenge-page-header { flex-direction: column; }
    .cph-right { align-self: flex-start; }
    .lb-table th:nth-child(5),
    .lb-table td:nth-child(5) { display: none; }
}

@media (max-width: 420px) {
    .btn { padding: 9px 14px; font-size: 0.76rem; }
    .lb-table th:nth-child(4),
    .lb-table td:nth-child(4) { display: none; }
}

/* ============================================================
   Empty States
   ============================================================ */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-muted);
}
.empty-state .es-icon { font-size: 3rem; margin-bottom: 12px; opacity: 0.5; }
.empty-state .es-title { font-size: 1rem; font-weight: 700; color: var(--text-secondary); margin-bottom: 6px; }
.empty-state .es-text  { font-size: 0.85rem; }

/* ============================================================
   Admin Panel — aligned with player UI
   ============================================================ */
.admin-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px 20px;
    position: relative;
    overflow: hidden;
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
}
.stat-card.orange::before { background: var(--accent); }
.stat-card.navy::before   { background: var(--accent-navy); }
.stat-card.green::before  { background: var(--success); }
.stat-card.red::before    { background: var(--danger); }
.stat-card.purple::before { background: var(--accent-purple); }
.stat-label { font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); margin-bottom: 6px; }
.stat-num   { font-family: var(--font-mono); font-size: 1.9rem; font-weight: 700; line-height: 1; }
.stat-sub   { font-size: 0.72rem; color: var(--text-muted); margin-top: 3px; }

.tab-nav { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 22px; }
.tab-btn {
    padding: 9px 18px;
    font-size: 0.8rem;
    font-weight: 700;
    font-family: var(--font-sans);
    cursor: pointer;
    border: none;
    background: none;
    color: var(--text-muted);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.18s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.tab-btn:hover  { color: var(--text-primary); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th {
    padding: 9px 12px;
    text-align: left;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.admin-table td {
    padding: 12px 12px;
    font-size: 0.84rem;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    vertical-align: middle;
}
.admin-table tr:hover td { background: rgba(255,107,44,0.02); }
.admin-table tr:last-child td { border-bottom: none; }

.action-btn {
    padding: 4px 11px;
    font-size: 0.72rem;
    font-weight: 700;
    font-family: var(--font-sans);
    cursor: pointer;
    border-radius: 6px;
    border: 1px solid;
    transition: all 0.18s;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}
.action-btn.danger  { color: var(--danger);  border-color: rgba(255,23,68,0.3);   background: rgba(255,23,68,0.06); }
.action-btn.warning { color: var(--warning); border-color: rgba(255,152,0,0.3);   background: rgba(255,152,0,0.06); }
.action-btn.success { color: var(--success); border-color: rgba(0,230,118,0.3);   background: rgba(0,230,118,0.06); }
.action-btn.danger:hover  { background: rgba(255,23,68,0.15); border-color: var(--danger); }
.action-btn.warning:hover { background: rgba(255,152,0,0.15);  border-color: var(--warning); }
.action-btn.success:hover { background: rgba(0,230,118,0.15);  border-color: var(--success); }
.action-btn:disabled { opacity: 0.3; cursor: not-allowed; }

.section-hd { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.section-hd h2 { margin: 0; font-size: 1rem; }
.section-hd span { font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-mono); }

.solve-bar-wrap { display: flex; align-items: center; gap: 8px; }
.solve-bar-track { flex: 1; height: 4px; background: var(--bg-tertiary); border-radius: 2px; overflow: hidden; min-width: 50px; }
.solve-bar-fill  { height: 100%; background: linear-gradient(90deg, var(--accent), var(--brand-orange-deep)); }

@media (max-width: 1100px) { .admin-grid { grid-template-columns: repeat(3,1fr); } }
@media (max-width: 700px)  { .admin-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 480px)  { .admin-grid { grid-template-columns: 1fr; } }