/* ==========================================================================
   🏛️ NEXTEDU NEXUS — MOCK ARCHIVE CSS
   Design System: Obsidian Dark & Frosted Light / Electric Purple #A855F7
   ========================================================================== */

:root {
    --nexus-bg: #050807;
    --nexus-bg-alt: #0c1210;
    --nexus-surface: #0c1210;
    --nexus-surface-hover: #162019;
    --nexus-card-bg: #0c1210;
    --nexus-card-border: #192a20;
    --nexus-glass-border: #192a20;
    --nexus-text: #edfdf4;
    --nexus-text-muted: #9ab0a4;
    --nexus-text-dim: #647a6f;
    
    /* Core Accent */
    --nexus-purple: #22c55e;
    --nexus-purple-glow: rgba(34, 197, 94, 0.3);
    --nexus-purple-subtle: rgba(34, 197, 94, 0.12);
    --nexus-purple-dark: #16a34a;

    /* Semantic Accents */
    --nexus-cyan: #22c55e;
    --nexus-cyan-glow: rgba(34, 197, 94, 0.25);
    --nexus-gold: #eab308;
    --nexus-gold-glow: rgba(234, 179, 8, 0.25);
    --nexus-emerald: #22c55e;
    --nexus-emerald-glow: rgba(34, 197, 94, 0.25);
    --nexus-rose: #ef4444;
    --nexus-rose-glow: rgba(239, 68, 68, 0.25);
    --nexus-amber: #f59e0b;

    --font-heading: 'Plus Jakarta Sans', 'Inter', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Inter', monospace;
    --font-reading: 'Inter', sans-serif;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    --transition-fast: 0.18s ease;
    --transition-smooth: 0.25s ease;
    --shadow-card: 0 4px 20px -2px rgba(0, 0, 0, 0.55);
}

[data-theme="light"] {
    --nexus-bg: #f8f5ff;
    --nexus-bg-alt: #fbf9ff;
    --nexus-surface: #ffffff;
    --nexus-surface-hover: #f3eeff;
    --nexus-card-bg: #ffffff;
    --nexus-card-border: #e7ddff;
    --nexus-glass-border: #e7ddff;
    --nexus-text: #171321;
    --nexus-text-muted: #625b71;
    --nexus-text-dim: #9d8fb0;
    --nexus-purple: #6d28d9;
    --nexus-purple-glow: rgba(109, 40, 217, 0.2);
    --nexus-purple-subtle: rgba(109, 40, 217, 0.08);
    --shadow-card: 0 4px 12px rgba(47, 24, 90, 0.08);
}

/* Base resets & typography */
body.dashboard-body {
    background-color: var(--nexus-bg) !important;
    color: var(--nexus-text);
    font-family: var(--font-body);
    min-height: 100vh;
    margin: 0;
    padding: 0 0 100px 0 !important;
    overflow-x: hidden;
    position: relative;
    -webkit-tap-highlight-color: transparent;
}

.animated-bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background: 
        radial-gradient(circle at 10% 15%, rgba(168, 85, 247, 0.07) 0%, transparent 45%),
        radial-gradient(circle at 90% 65%, rgba(56, 189, 248, 0.06) 0%, transparent 45%),
        radial-gradient(circle at 50% 85%, rgba(147, 51, 234, 0.05) 0%, transparent 60%);
}

.main-content {
    position: relative;
    z-index: 1;
    max-width: 1080px;
    margin: 0 auto;
    padding: 16px 18px 40px 18px;
    box-sizing: border-box;
}

/* --- 🏛️ TOP NEXUS APP HEADER --- */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 18px;
    background: var(--nexus-card-bg);
    border: 1px solid var(--nexus-card-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-card);
    margin-bottom: 22px;
    transition: var(--transition-smooth);
}

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

.header-vault-badge {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.2), rgba(126, 34, 206, 0.3));
    border: 1px solid rgba(168, 85, 247, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--nexus-purple);
    font-size: 1.25rem;
    box-shadow: 0 0 15px var(--nexus-purple-glow);
}

.header-title-box {
    display: flex;
    flex-direction: column;
}

.header-greeting {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    color: var(--nexus-text) !important;
    line-height: 1.2;
}

.header-sub {
    font-size: 0.72rem;
    color: var(--nexus-text-muted);
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.vault-status-pill {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: var(--radius-full);
    background: var(--nexus-purple-subtle);
    border: 1px solid rgba(168, 85, 247, 0.3);
    color: var(--nexus-purple);
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.vault-status-pill .pulse-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--nexus-purple);
    box-shadow: 0 0 8px var(--nexus-purple);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.9); opacity: 0.7; }
    50% { transform: scale(1.3); opacity: 1; }
    100% { transform: scale(0.9); opacity: 0.7; }
}

.glossy-btn {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    border: 1px solid var(--nexus-glass-border);
    background: var(--nexus-surface);
    color: var(--nexus-text);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition-fast);
    text-decoration: none;
}

.glossy-btn:hover {
    border-color: var(--nexus-purple);
    color: var(--nexus-purple);
    transform: translateY(-1px);
}

.header-avatar {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    border: 1px solid rgba(168, 85, 247, 0.3);
    background: var(--nexus-surface);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    overflow: hidden;
    transition: var(--transition-fast);
}

.header-avatar:hover {
    border-color: var(--nexus-purple);
    box-shadow: 0 0 10px var(--nexus-purple-glow);
}

/* --- 🌌 ARCHIVE HERO SECTION --- */
.archive-hero {
    position: relative;
    padding: 24px 26px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(13, 21, 39, 0.95), rgba(19, 9, 36, 0.85));
    border: 1px solid var(--nexus-card-border);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    box-shadow: var(--shadow-card);
    margin-bottom: 22px;
    overflow: hidden;
}

[data-theme="light"] .archive-hero {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(243, 232, 255, 0.9));
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 5px 14px;
    border-radius: var(--radius-full);
    background: var(--nexus-purple-subtle);
    border: 1px solid rgba(168, 85, 247, 0.3);
    color: var(--nexus-purple);
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.archive-hero h2 {
    font-family: var(--font-heading);
    font-size: 1.65rem;
    font-weight: 900;
    letter-spacing: 0.3px;
    margin: 0 0 8px 0;
    line-height: 1.25;
    background: linear-gradient(135deg, var(--nexus-text) 60%, var(--nexus-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.archive-hero p {
    font-size: 0.92rem;
    color: var(--nexus-text-muted);
    margin: 0;
    line-height: 1.55;
    max-width: 720px;
}

/* --- 📊 PERFORMANCE BENTO (3 CORE METRICS) --- */
.summary-panel {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 18px;
}

.s-card {
    border-radius: var(--radius-lg);
    background: var(--nexus-card-bg);
    border: 1px solid var(--nexus-card-border);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    box-shadow: var(--shadow-card);
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.s-card:hover {
    transform: translateY(-2px);
    border-color: var(--nexus-purple);
    box-shadow: 0 12px 35px -10px rgba(168, 85, 247, 0.3);
}

.s-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}

.s-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.s-badge {
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
}

.s-info {
    display: flex;
    flex-direction: column;
}

.s-info .val {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 4px;
}

.s-info .label {
    font-size: 0.78rem;
    color: var(--nexus-text-muted);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* SVG Accuracy Ring Mini Widget */
.accuracy-ring-container {
    position: relative;
    width: 54px;
    height: 54px;
}

.accuracy-ring-svg {
    transform: rotate(-90deg);
    width: 100%;
    height: 100%;
}

.accuracy-ring-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.08);
    stroke-width: 4;
}

.accuracy-ring-bar {
    fill: none;
    stroke: var(--nexus-purple);
    stroke-width: 4;
    stroke-linecap: round;
    stroke-dasharray: 138;
    stroke-dashoffset: 138;
    transition: stroke-dashoffset 1s cubic-bezier(0.16, 1, 0.3, 1), stroke 0.4s ease;
}

/* --- ⚡ PERFORMANCE SNAPSHOT STRIP --- */
.snapshot-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 24px;
    padding: 12px 18px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--nexus-glass-border);
}

.snapshot-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.snapshot-label {
    font-size: 0.68rem;
    color: var(--nexus-text-dim);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.snapshot-val {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--nexus-text);
}

/* --- 🛠️ ARCHIVE TOOLBAR & CONTROLS --- */
.archive-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    flex: 1;
}

.search-box {
    position: relative;
    min-width: 220px;
    flex: 1;
    max-width: 320px;
}

.search-box i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--nexus-text-dim);
    font-size: 0.85rem;
}

.search-input {
    width: 100%;
    padding: 9px 12px 9px 34px;
    border-radius: var(--radius-md);
    background: var(--nexus-card-bg);
    border: 1px solid var(--nexus-card-border);
    color: var(--nexus-text);
    font-family: var(--font-body);
    font-size: 0.84rem;
    box-sizing: border-box;
    transition: var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--nexus-purple);
    box-shadow: 0 0 12px var(--nexus-purple-glow);
}

.filter-pills {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.filter-pill {
    padding: 7px 12px;
    border-radius: var(--radius-full);
    border: 1px solid var(--nexus-glass-border);
    background: rgba(255, 255, 255, 0.03);
    color: var(--nexus-text-muted);
    font-size: 0.74rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.filter-pill:hover {
    color: var(--nexus-text);
    border-color: rgba(168, 85, 247, 0.3);
}

.filter-pill.active {
    background: var(--nexus-purple-subtle);
    border-color: var(--nexus-purple);
    color: var(--nexus-purple);
}

.btn-clear-history {
    border: 1px solid rgba(239, 68, 68, 0.35);
    background: rgba(239, 68, 68, 0.1);
    color: var(--nexus-rose);
    border-radius: var(--radius-md);
    padding: 8px 14px;
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
}

.btn-clear-history:hover {
    background: rgba(239, 68, 68, 0.2);
    transform: translateY(-1px);
}

/* --- 📜 MOCK LEDGER / TIMELINE CARDS --- */
.logs-grid {
    display: flex;
    flex-direction: column;
    gap: 14px;
    position: relative;
}

.history-card {
    border-radius: var(--radius-lg);
    background: var(--nexus-card-bg);
    border: 1px solid var(--nexus-card-border);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    box-shadow: var(--shadow-card);
    padding: 18px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    cursor: pointer;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.history-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--card-accent-color, var(--nexus-purple));
    border-top-left-radius: var(--radius-lg);
    border-bottom-left-radius: var(--radius-lg);
}

.history-card:hover {
    transform: translateY(-2px);
    border-color: rgba(168, 85, 247, 0.4);
    box-shadow: 0 12px 35px -10px rgba(0, 0, 0, 0.6);
}

.history-card:active {
    transform: scale(0.99);
}

.h-card-left {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
}

.h-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    flex-shrink: 0;
}

.h-details {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.h-details h4 {
    margin: 0;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 800;
    color: var(--nexus-text);
    letter-spacing: 0.3px;
}

.h-meta-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 0.78rem;
    color: var(--nexus-text-muted);
}

.h-meta-row span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.h-card-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
    flex-shrink: 0;
}

.score-badge {
    padding: 6px 14px;
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-weight: 800;
    font-size: 1.05rem;
    border: 1px solid;
    display: inline-flex;
    align-items: baseline;
    gap: 4px;
}

.score-badge small {
    font-size: 0.72rem;
    color: var(--nexus-text-muted);
}

.accuracy-chip {
    font-size: 0.76rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.tap-hint {
    font-size: 0.72rem;
    color: var(--nexus-purple);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 2px;
}

/* --- 🏛️ EMPTY / ERROR / LOADING STATES --- */
.empty-state {
    text-align: center;
    padding: 50px 20px;
    border-radius: var(--radius-lg);
    background: var(--nexus-card-bg);
    border: 1px solid var(--nexus-card-border);
    box-shadow: var(--shadow-card);
}

.empty-state i {
    font-size: 3rem;
    color: var(--nexus-purple);
    margin-bottom: 16px;
    opacity: 0.8;
}

.empty-state h3 {
    margin: 0 0 8px 0;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--nexus-text);
}

.empty-state p {
    margin: 0 0 20px 0;
    color: var(--nexus-text-muted);
    font-size: 0.88rem;
    max-width: 420px;
    margin-left: auto;
    margin-right: auto;
}

.btn-nexus-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--nexus-purple), #7e22ce);
    color: #ffffff;
    font-weight: 800;
    font-size: 0.88rem;
    border: none;
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 6px 20px rgba(168, 85, 247, 0.4);
    transition: var(--transition-fast);
}

.btn-nexus-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(168, 85, 247, 0.5);
}

/* --- 🔒 ACCESS GATE (HTTP 403 / VERIFYING) --- */
#access-gate-screen {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--nexus-bg);
    z-index: 2500;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.gate-card {
    max-width: 440px;
    width: 100%;
    padding: 34px 26px;
    border-radius: var(--radius-lg);
    background: var(--nexus-card-bg);
    border: 1px solid var(--nexus-card-border);
    backdrop-filter: blur(25px);
    text-align: center;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
}

.gate-icon {
    width: 64px;
    height: 64px;
    border-radius: 20px;
    background: var(--nexus-purple-subtle);
    border: 1px solid rgba(168, 85, 247, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--nexus-purple);
    margin: 0 auto 18px auto;
    box-shadow: 0 0 25px var(--nexus-purple-glow);
}

.gate-card h3 {
    margin: 0 0 8px 0;
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--nexus-text);
}

.gate-card p {
    margin: 0 0 24px 0;
    color: var(--nexus-text-muted);
    font-size: 0.88rem;
    line-height: 1.6;
}

/* --- 🔍 ATTEMPT INSPECTOR MODAL --- */
#attempt-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
}

.inspector-card {
    background: var(--nexus-surface);
    border: 1px solid var(--nexus-card-border);
    border-radius: var(--radius-lg);
    max-width: 960px;
    width: 100%;
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.9);
    position: relative;
    overflow: hidden;
    animation: modalScaleUp 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes modalScaleUp {
    from { opacity: 0; transform: scale(0.96) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.inspector-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--nexus-glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
}

.inspector-title-area h3 {
    margin: 0 0 4px 0;
    font-family: var(--font-heading);
    font-size: 1.15rem;
    color: var(--nexus-text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.inspector-title-area p {
    margin: 0;
    font-size: 0.78rem;
    color: var(--nexus-text-muted);
}

.modal-close-btn {
    background: transparent;
    border: none;
    color: var(--nexus-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: var(--transition-fast);
}

.modal-close-btn:hover {
    color: var(--nexus-rose);
    background: rgba(239, 68, 68, 0.1);
}

/* Modal Performance HUD */
.attempt-hud-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    padding: 14px 24px;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--nexus-glass-border);
}

.attempt-hud-item {
    text-align: center;
}

.attempt-hud-val {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 800;
}

.attempt-hud-label {
    font-size: 0.68rem;
    color: var(--nexus-text-dim);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Two-pane Inspector Body */
.inspector-body {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.navigator-pane {
    width: 260px;
    border-right: 1px solid var(--nexus-glass-border);
    padding: 18px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    background: rgba(0, 0, 0, 0.15);
}

.navigator-title {
    font-size: 0.74rem;
    font-weight: 800;
    color: var(--nexus-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navigator-legend {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
    font-size: 0.68rem;
    color: var(--nexus-text-dim);
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.navigator-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    overflow-y: auto;
    max-height: 420px;
    padding-right: 4px;
}

.nav-pill {
    padding: 8px 4px;
    border-radius: var(--radius-sm);
    font-size: 0.74rem;
    font-weight: 800;
    text-align: center;
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition-fast);
}

.nav-pill.correct {
    background: rgba(16, 185, 129, 0.15);
    border-color: rgba(16, 185, 129, 0.35);
    color: var(--nexus-emerald);
}

.nav-pill.wrong {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.35);
    color: var(--nexus-rose);
}

.nav-pill.skipped {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--nexus-glass-border);
    color: var(--nexus-text-dim);
}

.nav-pill:hover {
    transform: scale(1.05);
}

.questions-pane {
    flex: 1;
    overflow-y: auto;
    padding: 22px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.attempt-question-card {
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--nexus-glass-border);
    padding: 18px;
    position: relative;
    transition: var(--transition-fast);
}

.attempt-question-card.status-correct {
    border-left: 4px solid var(--nexus-emerald);
}

.attempt-question-card.status-wrong {
    border-left: 4px solid var(--nexus-rose);
}

.attempt-question-card.status-skipped {
    border-left: 4px solid var(--nexus-text-dim);
}

.q-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.q-badge {
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.74rem;
    font-weight: 800;
}

.q-text {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--nexus-text);
    margin: 0 0 14px 0;
    line-height: 1.55;
}

/* 4 Options Grid */
.options-matrix {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 14px;
}

.opt-item {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--nexus-glass-border);
    font-size: 0.84rem;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--nexus-text-muted);
}

.opt-item.is-correct-ans {
    border-color: rgba(16, 185, 129, 0.5);
    background: rgba(16, 185, 129, 0.12);
    color: var(--nexus-emerald);
    font-weight: 700;
}

.opt-item.is-user-wrong {
    border-color: rgba(239, 68, 68, 0.5);
    background: rgba(239, 68, 68, 0.12);
    color: var(--nexus-rose);
    font-weight: 700;
}

.q-summary-box {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.82rem;
    padding-top: 10px;
    border-top: 1px dashed var(--nexus-glass-border);
}

/* --- ⚠️ DESTRUCTIVE CLEAR CONFIRMATION MODAL --- */
#clear-confirm-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.82);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 11000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.confirm-card {
    max-width: 420px;
    width: 100%;
    padding: 26px;
    border-radius: var(--radius-lg);
    background: var(--nexus-surface);
    border: 1px solid rgba(239, 68, 68, 0.35);
    text-align: center;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.8);
}

.confirm-icon {
    width: 56px;
    height: 56px;
    border-radius: 18px;
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--nexus-rose);
    margin: 0 auto 16px auto;
}

.confirm-card h3 {
    margin: 0 0 8px 0;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--nexus-text);
}

.confirm-card p {
    margin: 0 0 22px 0;
    color: var(--nexus-text-muted);
    font-size: 0.85rem;
    line-height: 1.55;
}

.confirm-actions {
    display: flex;
    gap: 10px;
}

.confirm-actions button {
    flex: 1;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 800;
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

/* --- 📱 BOTTOM NAVIGATION (MOBILE DOCK) --- */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 28, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--nexus-glass-border);
    display: flex;
    justify-content: space-around;
    padding: 10px 12px 14px 12px;
    z-index: 1000;
}

[data-theme="light"] .bottom-nav {
    background: rgba(255, 255, 255, 0.95);
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--nexus-text-muted);
    text-decoration: none;
    font-size: 0.7rem;
    font-weight: 700;
    transition: var(--transition-fast);
}

.bottom-nav-item i {
    font-size: 1.25rem;
}

.bottom-nav-item.active {
    color: var(--nexus-purple);
}

/* --- 📱 RESPONSIVE ADJUSTMENTS --- */
@media screen and (max-width: 768px) {
    .main-content {
        padding: 12px 12px 85px 12px;
    }

    .archive-hero {
        padding: 18px 16px;
    }

    .archive-hero h2 {
        font-size: 1.35rem;
    }

    .summary-panel {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .snapshot-strip {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .archive-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box {
        max-width: 100%;
    }

    .history-card {
        padding: 14px 16px;
    }

    .h-card-left {
        gap: 12px;
    }

    .options-matrix {
        grid-template-columns: 1fr;
    }

    .inspector-card {
        max-height: 94vh;
        border-radius: 20px 20px 0 0;
        margin-top: auto;
    }

    #attempt-modal {
        padding: 0;
        align-items: flex-end;
    }

    .inspector-body {
        flex-direction: column;
    }

    .navigator-pane {
        width: 100%;
        max-height: 140px;
        border-right: none;
        border-bottom: 1px solid var(--nexus-glass-border);
    }

    .navigator-grid {
        grid-template-columns: repeat(8, 1fr);
        max-height: 80px;
    }

    .attempt-hud-strip {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
        padding: 10px 16px;
    }
}

/* --- ♿ REDUCED MOTION --- */
@media (prefers-reduced-motion: reduce) {
    *, ::before, ::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}