/* ========================================
   ATHLETIC BRUTALISM DESIGN SYSTEM
   ActaLog - Elite CrossFit Performance Tracker
   ======================================== */

/* CSS VARIABLES */
:root {
    /* Colors - Athletic Dark Theme */
    --color-bg-dark: #0a1628;
    --color-bg-darker: #050b14;
    --color-bg-section: #0f1d2e;

    --color-primary: #00bcd4;
    --color-primary-glow: rgba(0, 188, 212, 0.5);
    --color-primary-dark: #008ba3;

    --color-accent: #ffc107;
    --color-accent-dark: #ff9800;

    --color-text-primary: #ffffff;
    --color-text-secondary: #e0e0e0;
    --color-text-muted: #9ca3af;

    --color-border: rgba(0, 188, 212, 0.2);
    --color-divider: rgba(255, 255, 255, 0.1);

    /* Typography */
    --font-display: 'Bebas Neue', Impact, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Animations */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Effects */
    --shadow-glow: 0 0 20px var(--color-primary-glow);
    --shadow-glow-strong: 0 0 40px var(--color-primary-glow);
}

/* RESET & BASE */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-secondary);
    background: var(--color-bg-dark);
    overflow-x: hidden;
}

/* NOISE TEXTURE OVERLAY */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.05'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9999;
    opacity: 0.4;
}

/* NAVIGATION */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    animation: slideDown 0.5s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo .logo-text {
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    text-shadow: var(--shadow-glow);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-family: var(--font-display);
    font-size: 1.1rem;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-link:hover::after {
    width: 100%;
}

/* HERO SECTION */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 2rem 6rem;
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-bg-section) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(0, 188, 212, 0.03));
    pointer-events: none;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: rgba(0, 188, 212, 0.1);
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    margin-bottom: 2rem;
    font-weight: 700;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 6rem;
    line-height: 0.9;
    letter-spacing: 0.02em;
    margin-bottom: 2rem;
    color: var(--color-text-primary);
}

.hero-title-line {
    display: block;
}

.hero-title-line.glow {
    color: var(--color-primary);
    text-shadow: var(--shadow-glow-strong);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        text-shadow: 0 0 20px var(--color-primary-glow);
    }
    50% {
        text-shadow: 0 0 40px var(--color-primary-glow), 0 0 60px var(--color-primary-glow);
    }
}

.hero-subtitle {
    font-family: var(--font-mono);
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text-muted);
    max-width: 500px;
    margin-bottom: 3rem;
}

/* HERO METRICS */
.hero-metrics {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    padding: 2rem 0;
    border-top: 1px solid var(--color-divider);
    border-bottom: 1px solid var(--color-divider);
}

.metric {
    flex: 1;
}

.metric-value {
    font-family: var(--font-display);
    font-size: 3.5rem;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.metric-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    font-weight: 700;
}

.metric-divider {
    width: 1px;
    background: var(--color-divider);
}

/* HERO CTAs */
.hero-ctas {
    display: flex;
    gap: 1rem;
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    font-family: var(--font-display);
    font-size: 1.1rem;
    letter-spacing: 0.05em;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-bg-dark);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-strong);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: rgba(0, 188, 212, 0.1);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.25rem;
}

/* HERO VISUAL */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 1s ease 0.3s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.mockup-container {
    position: relative;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(-2deg);
    }
    50% {
        transform: translateY(-20px) rotate(2deg);
    }
}

.mockup-phone {
    width: 300px;
    height: 600px;
    background: var(--color-bg-darker);
    border-radius: 40px;
    border: 8px solid var(--color-primary);
    box-shadow: var(--shadow-glow-strong), 0 20px 60px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
}

.mockup-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-bg-section), var(--color-bg-dark));
    position: relative;
}

.mockup-screen::after {
    content: 'AL';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-display);
    font-size: 8rem;
    color: var(--color-primary);
    opacity: 0.3;
}

.mockup-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--color-primary-glow), transparent 70%);
    z-index: -1;
    animation: glow 3s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% {
        opacity: 0.3;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

/* DIAGONAL DIVIDER */
.diagonal-divider {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: var(--color-bg-section);
    clip-path: polygon(0 50%, 100% 0, 100% 100%, 0 100%);
}

.diagonal-divider-reverse {
    clip-path: polygon(0 0, 100% 50%, 100% 100%, 0 100%);
    background: var(--color-bg-dark);
}

/* FEATURES SECTION */
.features {
    padding: 8rem 2rem;
    background: var(--color-bg-section);
}

.features-container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: 4rem;
    letter-spacing: 0.05em;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

.section-line {
    width: 100px;
    height: 4px;
    background: var(--color-primary);
    margin: 0 auto;
    box-shadow: var(--shadow-glow);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    padding: 2.5rem;
    background: rgba(0, 188, 212, 0.03);
    border: 1px solid var(--color-border);
    transition: var(--transition-normal);
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }

.feature-card:hover {
    background: rgba(0, 188, 212, 0.05);
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.feature-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    letter-spacing: 0.05em;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

.feature-description {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--color-text-muted);
}

/* TECH SECTION */
.tech {
    position: relative;
    padding: 8rem 2rem;
    background: var(--color-bg-dark);
}

.tech-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.tech-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text-muted);
    margin-bottom: 3rem;
}

.tech-stack {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.tech-item {
    padding: 1.5rem;
    border-left: 3px solid var(--color-primary);
    background: rgba(0, 188, 212, 0.03);
}

.tech-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.tech-value {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--color-text-primary);
}

.tech-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.tech-feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.check-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-bg-dark);
    border-radius: 50%;
    font-weight: 700;
    flex-shrink: 0;
}

/* CODE BLOCK */
.code-block {
    background: var(--color-bg-darker);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.code-header {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    background: rgba(0, 188, 212, 0.05);
    border-bottom: 1px solid var(--color-border);
}

.code-dots {
    display: flex;
    gap: 0.5rem;
    margin-right: 1rem;
}

.code-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-text-muted);
}

.code-title {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.code-content {
    padding: 2rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
    overflow-x: auto;
}

.code-content code {
    color: var(--color-text-secondary);
    display: block;
    white-space: pre;
}

.code-comment {
    color: var(--color-text-muted);
}

.code-keyword {
    color: #ff79c6;
}

.code-function {
    color: var(--color-primary);
}

/* STATS SECTION */
.stats {
    padding: 6rem 2rem;
    background: var(--color-bg-section);
}

.stats-container {
    max-width: 1400px;
    margin: 0 auto;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    border-top: 3px solid var(--color-primary);
}

.stat-number {
    font-family: var(--font-display);
    font-size: 5rem;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 1rem;
    text-shadow: var(--shadow-glow);
}

.stat-label {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.stat-sublabel {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* CTA SECTION */
.cta {
    padding: 8rem 2rem;
    background: linear-gradient(135deg, var(--color-bg-dark), var(--color-bg-section));
    text-align: center;
}

.cta-container {
    max-width: 900px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-display);
    font-size: 3.5rem;
    letter-spacing: 0.05em;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

.cta-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 3rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.cta-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.cta-meta-label {
    color: var(--color-text-muted);
}

.cta-meta-value {
    color: var(--color-primary);
    font-weight: 700;
}

.cta-meta-divider {
    color: var(--color-divider);
}

/* FOOTER */
.footer {
    background: var(--color-bg-darker);
    border-top: 1px solid var(--color-border);
    padding: 4rem 2rem 2rem;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: 0.1em;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.footer-tagline {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer-heading {
    font-family: var(--font-display);
    font-size: 1.1rem;
    letter-spacing: 0.1em;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

.footer-column a {
    display: block;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-primary);
    padding-left: 0.5rem;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--color-divider);
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer-credits {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    opacity: 0.6;
}

/* RESPONSIVE DESIGN */
@media (max-width: 1200px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-visual {
        order: -1;
        margin-bottom: 2rem;
    }

    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .hero-subtitle {
        max-width: 600px;
    }

    .tech-container {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .nav-link {
        font-size: 0.9rem;
    }

    .hero {
        padding: 6rem 1rem 4rem;
    }

    .hero-title {
        font-size: 3.5rem;
    }

    .hero-metrics {
        flex-direction: column;
        gap: 2rem;
    }

    .metric-divider {
        display: none;
    }

    .hero-ctas {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .mockup-phone {
        width: 250px;
        height: 500px;
    }

    .section-title {
        font-size: 2.5rem;
    }

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

    .tech-stack {
        grid-template-columns: 1fr;
    }

    .tech-features {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .cta-title {
        font-size: 2rem;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .cta-meta {
        flex-direction: column;
        gap: 0.5rem;
    }

    .cta-meta-divider {
        display: none;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .code-content {
        font-size: 0.75rem;
        padding: 1rem;
    }
}

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

/* PRINT STYLES */
@media print {
    .noise-overlay,
    .nav,
    .mockup-glow,
    .diagonal-divider {
        display: none;
    }
}