/* ============================================================
   CYBERPUNK DESIGN SYSTEM — php5.de
   Dark Theme | Green Accent | Glow Effects | Particles
   ============================================================ */

/* --- Local Fonts (Variable) --- */
@font-face {
    font-family: 'Orbitron';
    src: url('/fonts/orbitron-variable.woff2') format('woff2');
    font-weight: 400 900;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'JetBrains Mono';
    src: url('/fonts/jetbrains-mono-variable.woff2') format('woff2');
    font-weight: 400 700;
    font-style: normal;
    font-display: swap;
}

/* --- CSS Variables --- */
:root {
    /* Background layers */
    --bg-deepest: #050508;
    --bg-base: #0a0a0f;
    --bg-surface: #111118;
    --bg-elevated: #1a1a24;
    --bg-muted: #22222e;

    /* Borders */
    --border-default: #2a2a3a;
    --border-hover: #3a3a50;
    --border-glow: rgba(74, 222, 128, 0.3);

    /* Text */
    --text-primary: #f0f0f5;
    --text-secondary: #a0a0b8;
    --text-muted: #6a6a80;

    /* Accent: Green */
    --accent: #4ade80;
    --accent-dim: #22c55e;
    --accent-bright: #86efac;
    --accent-glow: rgba(74, 222, 128, 0.4);
    --accent-glow-strong: rgba(74, 222, 128, 0.6);
    --accent-bg: rgba(74, 222, 128, 0.08);
    --accent-bg-hover: rgba(74, 222, 128, 0.15);
    --accent-border: rgba(74, 222, 128, 0.25);

    /* Secondary: Blue */
    --blue: #3b82f6;
    --blue-dim: #2563eb;
    --blue-glow: rgba(59, 130, 246, 0.4);
    --blue-bg: rgba(59, 130, 246, 0.08);

    /* Tertiary: Purple */
    --purple: #a855f7;
    --purple-dim: #8b5cf6;
    --purple-glow: rgba(168, 85, 247, 0.4);
    --purple-bg: rgba(168, 85, 247, 0.08);

    /* Danger */
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --danger-border: rgba(239, 68, 68, 0.25);

    /* Fonts */
    --font-heading: 'Orbitron', 'system-ui', sans-serif;
    --font-body: 'JetBrains Mono', 'Consolas', monospace;
    --font-mono: 'JetBrains Mono', 'Consolas', monospace;

    /* Spacing */
    --section-gap: 6rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background: var(--bg-deepest);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    min-height: 100vh;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

h1 { font-size: clamp(1.8rem, 4vw, 3rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1rem, 2vw, 1.3rem); }
h4 { font-size: 1rem; }

.font-heading { font-family: var(--font-heading); }
.font-mono { font-family: var(--font-mono); }

/* --- Glow Text --- */
.glow-text {
    color: var(--accent);
    text-shadow:
        0 0 7px var(--accent-glow),
        0 0 20px rgba(74, 222, 128, 0.2);
}
.glow-text-blue {
    color: var(--blue);
    text-shadow:
        0 0 7px var(--blue-glow),
        0 0 20px rgba(59, 130, 246, 0.2);
}
.glow-text-purple {
    color: var(--purple);
    text-shadow:
        0 0 7px var(--purple-glow),
        0 0 20px rgba(168, 85, 247, 0.2);
}

/* --- Particle Canvas --- */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* --- Layout --- */
.page-content {
    position: relative;
    z-index: 1;
}

.container {
    max-width: 72rem;
    margin: 0 auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}
@media (min-width: 640px) {
    .container { padding-left: 2rem; padding-right: 2rem; }
}

/* --- Navbar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: rgba(5, 5, 8, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-default);
    transition: background var(--transition-base);
}
.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 3.5rem;
}
.nav-link {
    font-family: var(--font-body);
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.4rem 0;
    position: relative;
    transition: color var(--transition-fast);
    letter-spacing: 0.03em;
}
.nav-link:hover, .nav-link.active {
    color: var(--accent);
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    box-shadow: 0 0 6px var(--accent-glow);
    transition: width var(--transition-base);
}
.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}
.nav-cta {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--bg-deepest);
    background: var(--accent);
    border: none;
    padding: 0.4rem 1rem;
    border-radius: 4px;
    text-decoration: none;
    transition: all var(--transition-fast);
    box-shadow: 0 0 12px var(--accent-glow);
    cursor: pointer;
}
.nav-cta:hover {
    background: var(--accent-bright);
    box-shadow: 0 0 20px var(--accent-glow-strong);
}

/* Mobile nav */
.mobile-menu {
    display: none;
    background: rgba(5, 5, 8, 0.97);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-default);
}
.mobile-menu.open { display: block; }
.mobile-menu a {
    display: block;
    padding: 0.75rem 1.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-bottom: 1px solid var(--border-default);
    transition: all var(--transition-fast);
}
.mobile-menu a:hover {
    color: var(--accent);
    background: var(--accent-bg);
}

/* --- Hero --- */
.hero {
    padding: 8rem 0 5rem;
    text-align: center;
    position: relative;
}
@media (min-width: 640px) {
    .hero { padding: 10rem 0 6rem; }
}
.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-bg);
    border: 1px solid var(--accent-border);
    border-radius: 2px;
    padding: 0.35rem 0.8rem;
    margin-bottom: 2rem;
    text-decoration: none;
    transition: all var(--transition-fast);
}
.hero-tag:hover {
    background: var(--accent-bg-hover);
    box-shadow: 0 0 12px var(--accent-glow);
}
.hero h1 {
    margin-bottom: 1.2rem;
}
.hero-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 32rem;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}
.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 24rem;
    margin: 0 auto;
}
@media (min-width: 640px) {
    .hero-buttons { flex-direction: row; }
}

/* --- Buttons --- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--bg-deepest);
    background: var(--accent);
    border: none;
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 0 15px var(--accent-glow);
}
.btn-primary:hover {
    background: var(--accent-bright);
    box-shadow: 0 0 25px var(--accent-glow-strong), 0 0 50px rgba(74, 222, 128, 0.15);
    transform: translateY(-1px);
}
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border-default);
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.btn-secondary:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: var(--bg-elevated);
}

/* --- Cards --- */
.cyber-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: 6px;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}
.cyber-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}
.cyber-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 0 20px rgba(74, 222, 128, 0.05), 0 4px 20px rgba(0, 0, 0, 0.3);
    transform: translateY(-2px);
}
.cyber-card:hover::before {
    opacity: 1;
}
.cyber-card h3 {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.cyber-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.65;
}
.cyber-card .card-tag {
    display: inline-block;
    font-size: 0.6rem;
    font-family: var(--font-mono);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

/* Card variants */
.cyber-card--blue::before {
    background: linear-gradient(90deg, transparent, var(--blue-glow), transparent);
}
.cyber-card--blue:hover {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.05), 0 4px 20px rgba(0, 0, 0, 0.3);
}
.cyber-card--purple::before {
    background: linear-gradient(90deg, transparent, var(--purple-glow), transparent);
}
.cyber-card--purple:hover {
    box-shadow: 0 0 20px rgba(168, 85, 247, 0.05), 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* --- Section --- */
.section {
    padding: var(--section-gap) 0;
    border-top: 1px solid var(--border-default);
}
.section-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1rem;
}
.section-label--accent {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent);
    background: var(--accent-bg);
    border: 1px solid var(--accent-border);
    border-radius: 2px;
    padding: 0.25rem 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}
.section h2 {
    margin-bottom: 0.75rem;
}
.section-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    max-width: 32rem;
    line-height: 1.65;
}

/* --- Grid --- */
.grid-2 { display: grid; grid-template-columns: 1fr; gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: 1fr; gap: 1rem; }
.grid-4 { display: grid; grid-template-columns: 1fr; gap: 1rem; }
@media (min-width: 640px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* --- Terminal Block --- */
.terminal {
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: 6px;
    overflow: hidden;
    max-width: 42rem;
    margin: 0 auto;
}
.terminal-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-default);
}
.terminal-dot {
    width: 0.6rem;
    height: 0.6rem;
    border-radius: 50%;
    background: var(--bg-muted);
}
.terminal-title {
    margin-left: 0.5rem;
    font-size: 0.7rem;
    color: var(--text-muted);
}
.terminal-body {
    padding: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.7;
}
.terminal-prompt { color: var(--accent); }
.terminal-dim { color: var(--text-muted); }
.terminal-success { color: var(--accent); }
.terminal-error { color: var(--danger); }
.terminal-blue { color: var(--blue); }

/* --- Process Steps --- */
.step-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.step-item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1.5rem;
    align-items: start;
    padding: 1rem 0;
}
.step-number {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    color: var(--text-muted);
    padding-top: 0.15rem;
}
.step-item h3 {
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}
.step-item p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* --- FAQ --- */
.faq-item { margin-bottom: 1.5rem; }
.faq-question {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}
.faq-answer {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem;
    margin-top: 0.5rem;
}
.faq-answer-icon {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}
.faq-answer p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* --- Form --- */
.cyber-form {
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: 6px;
    padding: 1.5rem;
}
@media (min-width: 640px) {
    .cyber-form { padding: 2rem; }
}
.form-label {
    display: block;
    font-size: 0.7rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    margin-bottom: 0.4rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.form-input {
    width: 100%;
    padding: 0.65rem 0.9rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-primary);
    background: var(--bg-base);
    border: 1px solid var(--border-default);
    border-radius: 4px;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-input::placeholder { color: var(--text-muted); }
.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-bg), 0 0 10px var(--accent-glow);
}
.form-input:focus::placeholder { color: transparent; }
textarea.form-input { resize: none; }

/* --- Footer --- */
.footer {
    background: var(--bg-base);
    border-top: 1px solid var(--border-default);
    margin-top: var(--section-gap);
    padding: 4rem 0 3rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
}
@media (min-width: 640px) {
    .footer-grid { grid-template-columns: repeat(4, 1fr); }
}
.footer-heading {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1rem;
}
.footer-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.6;
}
.footer-link {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.footer-link:hover {
    color: var(--accent);
}
.footer-bottom {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-default);
    text-align: center;
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* --- Scanline overlay --- */
.scanlines::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 999;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
}

/* --- Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Glow pulse keyframe */
@keyframes glow-pulse {
    0%, 100% { box-shadow: 0 0 12px var(--accent-glow); }
    50% { box-shadow: 0 0 25px var(--accent-glow-strong); }
}
.glow-pulse {
    animation: glow-pulse 3s ease-in-out infinite;
}

/* Subtle flicker for hero text */
@keyframes text-flicker {
    0%, 100% { opacity: 1; }
    92% { opacity: 1; }
    93% { opacity: 0.8; }
    94% { opacity: 1; }
    96% { opacity: 0.9; }
    97% { opacity: 1; }
}
.text-flicker {
    animation: text-flicker 5s ease-in-out infinite;
}

/* Horizontal scan line moving down */
@keyframes scan-line {
    0% { top: -5%; }
    100% { top: 105%; }
}
.scan-line-effect::before {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
    animation: scan-line 6s linear infinite;
    pointer-events: none;
    z-index: 2;
}

/* --- Reference/Client logos --- */
.client-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}
@media (min-width: 640px) {
    .client-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1024px) {
    .client-grid { grid-template-columns: repeat(4, 1fr); }
}
.client-card {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: 6px;
    transition: all var(--transition-base);
    min-height: 5rem;
}
.client-card:hover {
    border-color: var(--accent-border);
    box-shadow: 0 0 15px rgba(74, 222, 128, 0.05);
}
.client-name {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-align: center;
    transition: color var(--transition-fast);
}
.client-card:hover .client-name {
    color: var(--accent);
}

/* --- Stats --- */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}
@media (min-width: 768px) {
    .stat-grid { grid-template-columns: repeat(4, 1fr); }
}
.stat-item {
    text-align: center;
    padding: 1.5rem 1rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: 6px;
}
.stat-value {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent);
    text-shadow: 0 0 15px var(--accent-glow);
    line-height: 1;
    margin-bottom: 0.5rem;
}
.stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* --- Case study card --- */
.case-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: 6px;
    overflow: hidden;
    transition: all var(--transition-base);
}
.case-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 0 20px rgba(74, 222, 128, 0.05), 0 4px 20px rgba(0, 0, 0, 0.3);
    transform: translateY(-2px);
}
.case-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-default);
    position: relative;
    overflow: hidden;
}
.case-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
}
.case-tag {
    font-size: 0.6rem;
    font-family: var(--font-mono);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-bg);
    border: 1px solid var(--accent-border);
    border-radius: 2px;
    padding: 0.15rem 0.5rem;
    display: inline-block;
    margin-bottom: 0.75rem;
}
.case-body {
    padding: 1.5rem;
}
.case-body p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 1rem;
}
.case-meta {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.case-meta-item {
    font-size: 0.7rem;
    color: var(--text-muted);
}
.case-meta-value {
    color: var(--text-primary);
    font-weight: 600;
}

/* --- Badge/pill --- */
.badge {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.2rem 0.5rem;
    border-radius: 2px;
    display: inline-block;
}
.badge--green {
    color: var(--accent);
    background: var(--accent-bg);
    border: 1px solid var(--accent-border);
}
.badge--blue {
    color: var(--blue);
    background: var(--blue-bg);
    border: 1px solid rgba(59, 130, 246, 0.25);
}
.badge--purple {
    color: var(--purple);
    background: var(--purple-bg);
    border: 1px solid rgba(168, 85, 247, 0.25);
}

/* --- Page header (for sub-pages) --- */
.page-header {
    padding: 8rem 0 3rem;
    text-align: center;
    position: relative;
}
.page-header h1 {
    margin-bottom: 0.75rem;
}
.page-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    max-width: 32rem;
    margin: 0 auto;
    line-height: 1.65;
}

/* --- Divider with glow --- */
.glow-divider {
    height: 1px;
    background: linear-gradient(90deg,
        transparent,
        var(--accent-glow),
        var(--accent),
        var(--accent-glow),
        transparent
    );
    border: none;
    margin: 0;
}

/* --- Flash messages --- */
.flash-success {
    background: var(--accent-bg);
    border: 1px solid var(--accent-border);
    border-radius: 4px;
    padding: 1rem;
    margin-bottom: 1rem;
    color: var(--accent);
    font-size: 0.85rem;
}
.flash-error {
    background: var(--danger-bg);
    border: 1px solid var(--danger-border);
    border-radius: 4px;
    padding: 1rem;
    margin-bottom: 1rem;
    color: var(--danger);
    font-size: 0.85rem;
}

/* --- Accessibility --- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .fade-in { opacity: 1; transform: none; }
    #particles-canvas { display: none; }
}

/* Focus visible */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* --- Utility --- */
.text-center { text-align: center; }
.mt-section { margin-top: var(--section-gap); }
.mb-section { margin-bottom: var(--section-gap); }
.hidden { display: none !important; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}