/* ACTIVE THEORY (ACTIVETHEORY.NET) SIGNATURE DESIGN SYSTEM - VAULT HACKLPU */
@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@300;400;500;600;700&family=Syne:wght@400;600;700;800&family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-void: #030407;
    --bg-surface: rgba(10, 14, 24, 0.85);
    --bg-card: rgba(15, 22, 36, 0.7);
    --bg-card-hover: rgba(22, 32, 52, 0.9);

    --border-dim: rgba(255, 255, 255, 0.12);
    --border-glow: rgba(0, 242, 254, 0.5);

    --cyan: #00F2FE;
    --cyan-glow: rgba(0, 242, 254, 0.35);
    --violet: #8B5CF6;
    --violet-glow: rgba(139, 92, 246, 0.35);
    --emerald: #10B981;
    --amber: #F59E0B;
    --rose: #EF4444;

    --text-primary: #FFFFFF;
    --text-secondary: #CBD5E1;
    --text-muted: #94A3B8;

    --font-heading: 'Syne', sans-serif;
    --font-body: 'Outfit', sans-serif;
    --font-mono: 'Fira Code', monospace;

    --ease-active: cubic-bezier(0.19, 1, 0.22, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* WCAG ACCESSIBILITY ACCESSIBLE FOCUS INDICATORS */
*:focus-visible {
    outline: 2px solid var(--cyan) !important;
    outline-offset: 3px !important;
}

/* ACCESSIBILITY SCREEN READER ONLY */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -50px;
    left: 1rem;
    background: var(--cyan);
    color: #000;
    padding: 0.5rem 1rem;
    font-family: var(--font-mono);
    font-weight: 700;
    z-index: 10000;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 1rem;
}

html, body {
    width: 100%;
    height: 100%;
    background-color: var(--bg-void);
    color: var(--text-primary);
    font-family: var(--font-body);
    overflow-x: hidden;
}

/* ACTIVE THEORY FULL-SCREEN CANVAS STAGE */
#fluid-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    pointer-events: none;
}

/* BACKGROUND GRID OVERLAY */
.grid-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: 2;
    pointer-events: none;
}

/* ACTIVE THEORY CUSTOM CURSOR SYSTEM */
.cursor-dot {
    position: fixed;
    width: 6px;
    height: 6px;
    background: var(--cyan);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 15px var(--cyan);
}

.cursor-ring {
    position: fixed;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(0, 242, 254, 0.4);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: transform 0.1s var(--ease-active), width 0.3s ease, height 0.3s ease, border-color 0.3s ease;
}

.cursor-ring.active {
    width: 65px;
    height: 65px;
    border-color: var(--cyan);
    background: rgba(0, 242, 254, 0.05);
}

/* MAIN APP WRAPPER */
.app-wrapper {
    position: relative;
    z-index: 10;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 1.5rem 2.5rem;
    gap: 1.75rem;
    max-width: 1700px;
    margin: 0 auto;
}

/* TOP ACTIVE NAVIGATION */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-surface);
    border: 1px solid var(--border-dim);
    backdrop-filter: blur(30px);
    border-radius: 18px;
    padding: 0.9rem 2rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}

.brand-block {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.brand-logo-mark {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--cyan) 0%, var(--violet) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: #000;
    box-shadow: 0 0 25px var(--cyan-glow);
}

.brand-text-block h1 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.brand-text-block h1 span {
    color: var(--cyan);
}

.brand-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.nav-metrics {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.metric-pill {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-dim);
    padding: 0.45rem 1rem;
    border-radius: 10px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.metric-pill span.val {
    color: var(--cyan);
    font-weight: 700;
}

.audio-toggle-btn {
    background: rgba(0, 242, 254, 0.1);
    border: 1px solid var(--cyan);
    color: var(--cyan);
    padding: 0.45rem 0.85rem;
    border-radius: 10px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

.audio-toggle-btn:hover {
    background: var(--cyan);
    color: #000;
    box-shadow: 0 0 20px var(--cyan-glow);
}

/* HERO MARQUEE BANNER */
.hero-banner {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding: 1rem 0 0.5rem 0;
    border-bottom: 1px solid var(--border-dim);
}

.hero-heading {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    background: linear-gradient(180deg, #FFFFFF 0%, #94A3B8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-heading span {
    background: linear-gradient(135deg, var(--cyan) 0%, var(--violet) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-meta {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-secondary);
    text-align: right;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.hero-meta .highlight { color: var(--cyan); font-weight: 700; }

/* TABS NAV */
.active-tabs {
    display: flex;
    gap: 1rem;
}

.tab-link {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-dim);
    border-radius: 16px;
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    cursor: pointer;
    backdrop-filter: blur(20px);
    transition: all 0.4s var(--ease-active);
    position: relative;
    overflow: hidden;
}

.tab-link:hover {
    color: #FFF;
    border-color: var(--border-glow);
    transform: translateY(-2px);
}

.tab-link.active {
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
    border-color: var(--cyan);
    color: #FFF;
    box-shadow: 0 10px 35px rgba(0, 242, 254, 0.25);
}

.tab-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--cyan), var(--violet));
}

/* PANES STAGE */
.stage-panes {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.pane-view {
    display: none;
}

.pane-view.active {
    display: block;
    animation: activeSlideUp 0.5s var(--ease-active);
}

@keyframes activeSlideUp {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.grid-main {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 1.75rem;
}

/* ACTIVE THEORY CARDS */
.active-card {
    background: var(--bg-card);
    border: 1px solid var(--border-dim);
    border-radius: 20px;
    padding: 1.75rem;
    backdrop-filter: blur(24px);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    gap: 1.35rem;
    position: relative;
    transition: all 0.4s var(--ease-active);
}

.active-card:hover {
    border-color: var(--border-glow);
    box-shadow: 0 25px 60px rgba(0, 242, 254, 0.15);
}

.card-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-dim);
    padding-bottom: 0.85rem;
}

.card-head h2 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: #FFF;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    letter-spacing: 0.02em;
}

.card-head h2 i {
    color: var(--cyan);
}

/* RING INTERACTIVE CANVAS WRAPPER */
.canvas-container-box {
    position: relative;
    width: 100%;
    height: 360px;
    background: #020305;
    border-radius: 16px;
    border: 1px solid var(--border-dim);
    overflow: hidden;
}

#topology-ring-canvas {
    width: 100%;
    height: 100%;
}

/* NODE GRID CARDS */
.nodes-tri-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.node-active-box {
    background: rgba(8, 12, 20, 0.85);
    border: 1px solid var(--border-dim);
    border-radius: 16px;
    padding: 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    transition: all 0.3s var(--ease-active);
}

.node-active-box.killed {
    border-color: rgba(239, 68, 68, 0.5);
    background: rgba(239, 68, 68, 0.08);
}

.node-box-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.node-tag-group {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.pulse-node-dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: var(--emerald);
    box-shadow: 0 0 12px var(--emerald);
}

.pulse-node-dot.killed {
    background: var(--rose);
    box-shadow: 0 0 12px var(--rose);
}

.node-box-name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.95rem;
}

.node-box-port {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--cyan);
    background: rgba(0, 242, 254, 0.1);
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
}

.node-stat-list {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    font-size: 0.82rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.node-stat-row {
    display: flex;
    justify-content: space-between;
}

.node-stat-row span.bold {
    color: #FFF;
    font-weight: 700;
}

.node-btn-row {
    display: flex;
    gap: 0.6rem;
    margin-top: 0.2rem;
}

/* BUTTONS */
.btn-at {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    padding: 0.8rem 1.4rem;
    border-radius: 12px;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    cursor: pointer;
    border: none;
    transition: all 0.3s var(--ease-active);
}

.btn-cyan-glow {
    background: linear-gradient(135deg, var(--cyan) 0%, #3B82F6 100%);
    color: #000;
    box-shadow: 0 0 25px var(--cyan-glow);
}

.btn-cyan-glow:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 0 40px rgba(0, 242, 254, 0.6);
}

.btn-violet-glow {
    background: rgba(139, 92, 246, 0.2);
    border: 1px solid var(--violet);
    color: #FFF;
}

.btn-violet-glow:hover {
    background: var(--violet);
    box-shadow: 0 0 30px var(--violet-glow);
    transform: translateY(-2px);
}

.btn-rose-glow {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid var(--rose);
    color: #FFF;
}

.btn-rose-glow:hover {
    background: var(--rose);
    transform: translateY(-2px);
}

.btn-amber-glow {
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid var(--amber);
    color: var(--amber);
}

.btn-amber-glow:hover {
    background: var(--amber);
    color: #000;
}

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.78rem;
    border-radius: 8px;
    flex: 1;
}

/* FORM FIELDS */
.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.form-field label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.at-input, .at-textarea {
    width: 100%;
    background: #020305;
    border: 1px solid var(--border-dim);
    border-radius: 12px;
    padding: 0.85rem 1rem;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    color: #FFF;
    outline: none;
    transition: all 0.3s var(--ease-active);
}

.at-input:focus, .at-textarea:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 25px var(--cyan-glow);
}

/* PRESET BUTTONS */
.preset-row {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.chip-at {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-dim);
    color: var(--text-secondary);
    padding: 0.35rem 0.75rem;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.chip-at:hover {
    background: rgba(0, 242, 254, 0.15);
    border-color: var(--cyan);
    color: var(--cyan);
}

/* ACTIVE CONSOLE STREAM */
.active-console-box {
    background: #020305;
    border: 1px solid var(--border-dim);
    border-radius: 14px;
    padding: 1.15rem;
    height: 230px;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stream-row {
    display: flex;
    gap: 0.85rem;
    line-height: 1.6;
    animation: activeRowIn 0.3s var(--ease-active);
}

@keyframes activeRowIn {
    from { opacity: 0; transform: translateX(-12px); }
    to { opacity: 1; transform: translateX(0); }
}

.stream-row .time { color: var(--text-muted); }
.stream-row .ok { color: var(--emerald); font-weight: 600; }
.stream-row .err { color: var(--rose); font-weight: 600; }
.stream-row .info { color: var(--cyan); }

/* CHAOS CARDS GRID */
.chaos-trio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.chaos-at-card {
    background: var(--bg-card);
    border: 1px solid var(--border-dim);
    border-radius: 20px;
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 1.5rem;
    backdrop-filter: blur(24px);
    transition: all 0.4s var(--ease-active);
}

.chaos-at-card:hover {
    border-color: var(--cyan);
    transform: translateY(-5px);
    box-shadow: 0 25px 50px rgba(0, 242, 254, 0.2);
}

.chaos-top {
    display: flex;
    gap: 1rem;
}

.chaos-symbol {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    background: rgba(0, 242, 254, 0.1);
    border: 1px solid var(--cyan);
    color: var(--cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.chaos-desc h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: #FFF;
    margin-bottom: 0.35rem;
}

.chaos-desc p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* AUTOMATED TEST SUITE STYLES */
.test-suite-card {
    background: var(--bg-card);
    border: 1px solid var(--border-dim);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(24px);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.test-summary-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-dim);
    border-radius: 14px;
    padding: 1.25rem 1.75rem;
}

.test-metric {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.test-metric .num {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
}

.test-metric .num.pass { color: var(--emerald); }
.test-metric .num.score { color: var(--cyan); }
.test-metric .label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.test-progress-bar-container {
    width: 100%;
    height: 10px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 5px;
    overflow: hidden;
}

.test-progress-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--cyan), var(--emerald));
    transition: width 0.3s ease;
}

.test-results-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.test-row-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(8, 12, 20, 0.8);
    border: 1px solid var(--border-dim);
    padding: 0.85rem 1.25rem;
    border-radius: 12px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.test-row-item .test-id-title {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.test-row-item .test-badge {
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
}

.test-row-item .test-badge.pass { background: rgba(16, 185, 129, 0.15); color: var(--emerald); border: 1px solid var(--emerald); }
.test-row-item .test-badge.pending { background: rgba(148, 163, 184, 0.15); color: var(--text-muted); border: 1px solid var(--border-dim); }

/* PROBLEM STATEMENT STYLES */
.doc-card {
    background: var(--bg-card);
    border: 1px solid var(--border-dim);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(24px);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.doc-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.doc-section h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    color: var(--cyan);
}

.doc-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 0.82rem;
}

.doc-table th, .doc-table td {
    border: 1px solid var(--border-dim);
    padding: 0.75rem 1rem;
    text-align: left;
}

.doc-table th {
    background: rgba(0, 0, 0, 0.5);
    color: var(--cyan);
}

/* CLI BLOCK */
.cli-code-block {
    background: #020305;
    border: 1px solid var(--border-dim);
    border-radius: 14px;
    padding: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    color: var(--cyan);
    position: relative;
}

.btn-copy-cli {
    position: absolute;
    top: 0.85rem;
    right: 0.85rem;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #FFF;
    padding: 0.35rem 0.85rem;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    cursor: pointer;
}

/* FOOTER */
.footer-at {
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text-muted);
    padding: 2rem 0;
    border-top: 1px solid var(--border-dim);
    margin-top: 2rem;
}

.footer-at span { color: var(--cyan); font-weight: 700; }

@media (max-width: 1100px) {
    .grid-main, .nodes-tri-grid, .chaos-trio-grid { grid-template-columns: 1fr; }
    .hero-heading { font-size: 2.2rem; }
    .app-wrapper { padding: 1rem; }
}