/**
 * Data Stream Matrix Theme
 * =========================
 * Matrix-inspiriertes Command Terminal für HENX3D
 *
 * Features:
 * - Terminal-Schwarz Background
 * - Matrix-Grün Typography
 * - CRT Scanline Overlay
 * - Glitch Effects
 * - Monospace Design
 * - Hacker Aesthetics
 *
 * @version 1.0.0
 * @created 2026-01-06
 */

:root {
    /* Colors - Terminal */
    --matrix-black: #000000;
    --matrix-dark-gray: #0a0a0a;
    --matrix-medium-gray: #1a1a1a;

    /* Matrix Green */
    --matrix-green-bright: #00ff41;
    --matrix-green-medium: #008f11;
    --matrix-green-dark: #003b00;
    --matrix-green-dim: #001a00;

    /* Accents */
    --matrix-error-red: #ff0000;
    --matrix-warning-yellow: #ffff00;
    --matrix-info-cyan: #00ffff;
    --matrix-highlight-white: #ffffff;

    /* CRT Glow */
    --matrix-crt-glow: rgba(0, 255, 65, 0.5);

    /* Typography */
    --matrix-font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --matrix-font-fallback: 'Consolas', 'Monaco', monospace;

    /* Spacing */
    --matrix-space-xs: 0.5rem;
    --matrix-space-sm: 1rem;
    --matrix-space-md: 1.5rem;
    --matrix-space-lg: 2rem;
    --matrix-space-xl: 3rem;

    /* Borders */
    --matrix-border-width: 1px;
    --matrix-border-radius: 0;

    /* Shadows & Glows */
    --matrix-shadow-sm: 0 2px 8px rgba(0, 255, 65, 0.2);
    --matrix-shadow-md: 0 4px 16px rgba(0, 255, 65, 0.3);
    --matrix-shadow-lg: 0 8px 32px rgba(0, 255, 65, 0.4);
    --matrix-glow-green: 0 0 10px rgba(0, 255, 65, 0.8),
                         0 0 20px rgba(0, 255, 65, 0.4),
                         0 0 30px rgba(0, 255, 65, 0.2);
    --matrix-glow-red: 0 0 10px rgba(255, 0, 0, 0.8),
                       0 0 20px rgba(255, 0, 0, 0.4);

    /* Transitions */
    --matrix-transition: 100ms linear;

    /* Standard CSS Variables for Compatibility */
    --color-bg: var(--matrix-black);
    --color-bg-elevated: var(--matrix-dark-gray);
    --color-bg-subtle: var(--matrix-black);
    --color-bg-secondary: var(--matrix-dark-gray);
    --color-bg-tertiary: var(--matrix-medium-gray);
    --color-text: var(--matrix-green-bright);
    --color-text-muted: var(--matrix-green-medium);
    --color-text-subtle: var(--matrix-green-dark);
    --color-primary: var(--matrix-green-bright);
    --color-primary-dark: var(--matrix-green-medium);
    --color-primary-light: var(--matrix-green-bright);
    --color-border: var(--matrix-green-dark);
    --color-line: var(--matrix-green-dim);
    --background-color: var(--matrix-black);
    --card-background: var(--matrix-dark-gray);
    --input-background: var(--matrix-medium-gray);
    --input-text: var(--matrix-green-bright);
    --text-color: var(--matrix-green-bright);
    --border-color: var(--matrix-green-medium);
    --card-bg: var(--matrix-dark-gray);
    --input-bg: var(--matrix-medium-gray);
    --input-border: var(--matrix-green-medium);
    --button-text: var(--matrix-black);
    color-scheme: dark;
}

/* Terminal Background with Scanlines */
body {
    font-family: var(--matrix-font-mono);
    color: var(--matrix-green-bright);
    background: var(--matrix-black);
    text-shadow: 0 0 5px var(--matrix-crt-glow);
}

/* CRT Scanline Overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.15) 0px,
        rgba(0, 0, 0, 0.15) 1px,
        transparent 1px,
        transparent 2px
    );
    pointer-events: none;
    z-index: 9999;
    animation: scanline-flicker 0.15s infinite;
}

@keyframes scanline-flicker {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.95; }
}

/* CRT Screen Curve (subtle) */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center,
        transparent 0%,
        transparent 70%,
        rgba(0, 0, 0, 0.3) 100%
    );
    pointer-events: none;
    z-index: 9998;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--matrix-font-mono);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--matrix-green-bright);
    text-shadow: var(--matrix-glow-green);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.75rem; }
h3 { font-size: 2rem; }

.matrix-title {
    color: var(--matrix-green-bright);
    text-shadow: var(--matrix-glow-green);
    position: relative;
    display: inline-block;
    animation: matrix-text-glitch 3s infinite;
}

@keyframes matrix-text-glitch {
    0%, 90%, 100% {
        transform: translateX(0);
        text-shadow: var(--matrix-glow-green);
    }
    92% {
        transform: translateX(-2px);
        text-shadow: -2px 0 var(--matrix-error-red),
                     2px 0 var(--matrix-info-cyan);
    }
    94% {
        transform: translateX(2px);
        text-shadow: 2px 0 var(--matrix-error-red),
                     -2px 0 var(--matrix-info-cyan);
    }
    96% {
        transform: translateX(0);
        text-shadow: var(--matrix-glow-green);
    }
}

/* Terminal Cursor */
.terminal-cursor {
    display: inline-block;
    width: 10px;
    height: 1.2em;
    background: var(--matrix-green-bright);
    animation: cursor-blink 1s step-end infinite;
    vertical-align: middle;
    margin-left: 2px;
}

@keyframes cursor-blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* Buttons - Terminal Style */
.btn-primary,
.btn-matrix {
    padding: var(--matrix-space-sm) var(--matrix-space-lg);
    font-family: var(--matrix-font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--matrix-black);
    background: var(--matrix-green-bright);
    border: 1px solid var(--matrix-green-bright);
    cursor: pointer;
    transition: all var(--matrix-transition);
    box-shadow: var(--matrix-glow-green);
    position: relative;
}

.btn-matrix::before {
    content: '> ';
    color: var(--matrix-black);
}

.btn-matrix:hover {
    background: var(--matrix-black);
    color: var(--matrix-green-bright);
    box-shadow: var(--matrix-glow-green),
                inset 0 0 20px rgba(0, 255, 65, 0.2);
}

.btn-secondary,
.btn-terminal {
    padding: var(--matrix-space-sm) var(--matrix-space-lg);
    font-family: var(--matrix-font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--matrix-green-bright);
    background: var(--matrix-black);
    border: 1px solid var(--matrix-green-bright);
    cursor: pointer;
    transition: all var(--matrix-transition);
}

.btn-terminal::before {
    content: '$ ';
}

.btn-terminal:hover {
    background: var(--matrix-green-dark);
    box-shadow: var(--matrix-glow-green);
}

/* Cards - Terminal Windows */
.card,
.service-card,
.portfolio-card {
    position: relative;
    padding: var(--matrix-space-lg);
    background: var(--matrix-dark-gray);
    border: 1px solid var(--matrix-green-medium);
    box-shadow: var(--matrix-shadow-md);
    transition: all var(--matrix-transition);
}

/* Terminal window header */
.card::before {
    content: '[TERMINAL:' attr(data-card-id) ']';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 4px 12px;
    font-family: var(--matrix-font-mono);
    font-size: 0.75rem;
    color: var(--matrix-green-bright);
    background: var(--matrix-medium-gray);
    border-bottom: 1px solid var(--matrix-green-medium);
}

.card {
    padding-top: calc(var(--matrix-space-lg) + 28px);
}

.card:hover {
    border-color: var(--matrix-green-bright);
    box-shadow: var(--matrix-shadow-lg),
                var(--matrix-glow-green);
}

/* Terminal prompt line */
.card-header {
    display: flex;
    align-items: center;
    gap: var(--matrix-space-md);
    margin-bottom: var(--matrix-space-md);
    padding-bottom: var(--matrix-space-md);
    border-bottom: 1px solid var(--matrix-green-dark);
    position: relative;
}

.card-header::before {
    content: 'root@henx3d:~# ';
    font-family: var(--matrix-font-mono);
    font-size: 0.875rem;
    color: var(--matrix-green-medium);
    position: absolute;
    top: -24px;
    left: 0;
}

.card-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--matrix-green-bright);
    background: var(--matrix-black);
    font-size: 1.5rem;
    color: var(--matrix-green-bright);
    font-family: var(--matrix-font-mono);
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--matrix-black);
}

.hero-content {
    text-align: center;
    max-width: 1200px;
    padding: var(--matrix-space-xl) var(--matrix-space-lg);
    z-index: 10;
}

.hero-tagline {
    font-family: var(--matrix-font-mono);
    font-size: 0.875rem;
    color: var(--matrix-green-medium);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: var(--matrix-space-md);
}

.hero-tagline::before {
    content: '> ';
    color: var(--matrix-green-bright);
}

/* Grid Layout */
.matrix-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--matrix-space-lg);
    padding: var(--matrix-space-xl) var(--matrix-space-lg);
}

/* Navigation */
header.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--matrix-black);
    border-bottom: 1px solid var(--matrix-green-bright);
    box-shadow: var(--matrix-shadow-lg);
    z-index: 100;
}

.nav-link {
    padding: var(--matrix-space-sm) var(--matrix-space-md);
    color: var(--matrix-green-medium);
    font-family: var(--matrix-font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-decoration: none;
    transition: all var(--matrix-transition);
    position: relative;
}

.nav-link::before {
    content: '[ ';
    color: var(--matrix-green-dark);
}

.nav-link::after {
    content: ' ]';
    color: var(--matrix-green-dark);
}

.nav-link:hover,
.nav-link.active {
    color: var(--matrix-green-bright);
    text-shadow: var(--matrix-glow-green);
}

.nav-link:hover::before,
.nav-link:hover::after,
.nav-link.active::before,
.nav-link.active::after {
    color: var(--matrix-green-bright);
}

/* Section Divider - Terminal Line */
.section-divider {
    width: 100%;
    height: 1px;
    background: var(--matrix-green-medium);
    margin: var(--matrix-space-xl) 0;
    box-shadow: var(--matrix-glow-green);
    position: relative;
}

.section-divider::before {
    content: '════════════════════════════════════════';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--matrix-font-mono);
    font-size: 0.75rem;
    color: var(--matrix-green-dark);
}

/* Forms - Terminal Input */
.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--matrix-space-sm) var(--matrix-space-md);
    font-family: var(--matrix-font-mono);
    font-size: 0.875rem;
    color: var(--matrix-green-bright);
    background: var(--matrix-black);
    border: 1px solid var(--matrix-green-medium);
    transition: all var(--matrix-transition);
    text-shadow: 0 0 5px var(--matrix-crt-glow);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--matrix-green-dark);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--matrix-green-bright);
    box-shadow: 0 0 0 2px rgba(0, 255, 65, 0.3),
                var(--matrix-glow-green);
}

/* Stats - Terminal Counter */
.stat-number {
    font-family: var(--matrix-font-mono);
    font-size: 4.5rem;
    font-weight: 700;
    color: var(--matrix-green-bright);
    text-shadow: var(--matrix-glow-green);
    animation: counter-increment 2s ease-in-out;
}

@keyframes counter-increment {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--matrix-green-medium);
}

.stat-label::before {
    content: '// ';
    color: var(--matrix-green-dark);
}

/* Footer */
.site-footer {
    background: var(--matrix-black);
    border-top: 1px solid var(--matrix-green-bright);
    box-shadow: 0 -4px 16px rgba(0, 255, 65, 0.2);
}

/* Code Block Style */
pre, code {
    font-family: var(--matrix-font-mono);
    background: var(--matrix-dark-gray);
    border: 1px solid var(--matrix-green-dark);
    padding: var(--matrix-space-sm);
    color: var(--matrix-green-bright);
}

/* Error Messages */
.error-message {
    color: var(--matrix-error-red);
    text-shadow: var(--matrix-glow-red);
    animation: error-blink 0.5s ease-in-out 3;
}

@keyframes error-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* Success Messages */
.success-message {
    color: var(--matrix-green-bright);
    text-shadow: var(--matrix-glow-green);
}

.success-message::before {
    content: '[OK] ';
}

/* Utilities */
.text-green { color: var(--matrix-green-bright); }
.text-error { color: var(--matrix-error-red); }
.text-warning { color: var(--matrix-warning-yellow); }
.text-info { color: var(--matrix-info-cyan); }
.bg-terminal { background: var(--matrix-black); }
.glow-green { text-shadow: var(--matrix-glow-green); }

/* Matrix rain container */
#matrix-rain-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
}

/* Network graph canvas */
#network-graph-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    opacity: 0.3;
}

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }

    .stat-number { font-size: 3rem; }

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

/* Screen Flicker (subtle) */
@keyframes screen-flicker {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.98; }
}

body {
    animation: screen-flicker 0.15s infinite;
}