/* ============================================
   CODEFARM - Computational Art Residency
   Black/White Brutalist Aesthetic with RGB Accent
   ============================================ */

/* Font Face */
@font-face {
    font-family: 'Fira Code';
    src: url('../FiraCode-VariableFont_wght.ttf') format('truetype');
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

/* CSS Variables */
:root {
    --black: #000000;
    --white: #ffffff;
    --gray-dark: #1a1a1a;
    --gray-mid: #333333;
    --gray-light: #f5f5f5;
    
    /* RGB Cycling accent - animated via JS */
    --accent-hue: 0;
    --accent: hsl(var(--accent-hue), 100%, 50%);
    
    /* Typography */
    --font-mono: 'Fira Code', 'Space Mono', monospace;
    --font-sans: 'Work Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 600ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.6;
    color: var(--white);
    background: var(--black);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Selection */
::selection {
    background: var(--accent);
    color: var(--black);
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-mid);
    transition: var(--transition-smooth);
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--white);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--white);
    text-decoration: none;
    padding: var(--space-xs) 0;
    position: relative;
    transition: var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--white);
    transition: var(--transition-smooth);
}

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

.nav-link.active {
    color: var(--accent);
}

.nav-link.active::after {
    background: var(--accent);
}

.nav-link--cta {
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--white);
    transition: var(--transition-smooth);
}

.nav-link--cta::after {
    display: none;
}

.nav-link--cta:hover {
    background: var(--white);
    color: var(--black);
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: var(--transition-smooth);
}

/* ============================================
   CANVAS OVERLAY
   ============================================ */
#triangleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 100;
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
    min-height: 100vh;
    padding: calc(80px + var(--space-lg)) var(--space-md) var(--space-xl);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.section--dark {
    background: var(--black);
    color: var(--white);
}

.section--light {
    background: var(--white);
    color: var(--black);
}

/* Sections with more content - auto height */
#curriculum,
#details {
    min-height: auto;
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.section-header {
    margin-bottom: var(--space-lg);
}

.section-title {
    font-family: var(--font-mono);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    line-height: 1.1;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 60px;
}

.hero-logo {
    width: 300px;
    height: 300px;
    margin-bottom: var(--space-md);
    position: relative;
}

.hero-logo-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.hero-title {
    font-family: var(--font-mono);
    font-size: clamp(3rem, 12vw, 8rem);
    font-weight: 700;
    letter-spacing: 0.15em;
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.hero-tagline {
    font-family: var(--font-mono);
    font-size: clamp(0.875rem, 2vw, 1.25rem);
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    opacity: 0.8;
    margin-bottom: var(--space-md);
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    max-width: 700px;
    margin: 0 auto var(--space-lg);
    opacity: 0.9;
    line-height: 1.7;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

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

.hero-meta-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    opacity: 0.6;
    margin-bottom: var(--space-xs);
}

.hero-meta-value {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    padding: var(--space-md) var(--space-lg);
    text-decoration: none;
    border: 2px solid currentColor;
    cursor: pointer;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.btn--primary {
    background: var(--white);
    color: var(--black);
    border-color: var(--white);
}

.btn--primary:hover {
    background: transparent;
    color: var(--white);
}

.btn--secondary {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn--secondary:hover {
    background: var(--white);
    color: var(--black);
}

.section--light .btn--primary {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

.section--light .btn--primary:hover {
    background: transparent;
    color: var(--black);
}

.section--light .btn--secondary {
    color: var(--black);
    border-color: var(--black);
}

.section--light .btn--secondary:hover {
    background: var(--black);
    color: var(--white);
}

/* RGB Glow Effect */
.btn--glow {
    box-shadow: 
        0 0 20px hsla(var(--accent-hue), 100%, 50%, 0.3),
        0 0 40px hsla(var(--accent-hue), 100%, 50%, 0.2);
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% {
        box-shadow: 
            0 0 20px hsla(var(--accent-hue), 100%, 50%, 0.3),
            0 0 40px hsla(var(--accent-hue), 100%, 50%, 0.2);
    }
    50% {
        box-shadow: 
            0 0 30px hsla(var(--accent-hue), 100%, 50%, 0.5),
            0 0 60px hsla(var(--accent-hue), 100%, 50%, 0.3);
    }
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    align-items: start;
}

.about-col p {
    margin-bottom: var(--space-md);
    font-size: 1.125rem;
    line-height: 1.8;
}

.text-large {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 300;
    line-height: 1.5;
    margin-bottom: var(--space-lg);
}

.about-note {
    padding: var(--space-md);
    border-left: 3px solid var(--black);
    background: var(--gray-light);
    font-size: 1.125rem;
    line-height: 1.7;
}

/* ============================================
   EXPERIENCE SECTION
   ============================================ */
.experience-breakdown {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.experience-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-lg) var(--space-xl);
    border: 1px solid var(--gray-mid);
    min-width: 250px;
}

.experience-hours {
    font-family: var(--font-mono);
    font-size: clamp(5rem, 12vw, 8rem);
    font-weight: 700;
    line-height: 1;
    background: linear-gradient(
        135deg,
        hsl(0, 100%, 50%),
        hsl(120, 100%, 50%),
        hsl(240, 100%, 50%)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.experience-unit {
    font-family: var(--font-mono);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    opacity: 0.7;
    margin-top: var(--space-xs);
}

.experience-label {
    font-size: 1.25rem;
    margin-top: var(--space-sm);
}

.experience-divider {
    font-family: var(--font-mono);
    font-size: 3rem;
    opacity: 0.5;
}

.experience-tools {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.tool-tag {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--white);
    opacity: 0.9;
}

.experience-summary {
    max-width: 750px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.25rem;
    line-height: 1.8;
    opacity: 0.9;
}

/* ============================================
   CURRICULUM SECTION
   ============================================ */
.curriculum-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.curriculum-item {
    padding: var(--space-md) var(--space-lg);
    border: 1px solid var(--gray-light);
    background: var(--white);
    transition: var(--transition-smooth);
}

.curriculum-item:hover {
    border-color: var(--black);
    transform: translateY(-2px);
}

.curriculum-heading {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.curriculum-item p {
    font-size: 1rem;
    opacity: 0.8;
    line-height: 1.6;
}

/* Physical Methods */
.curriculum-physical {
    text-align: center;
    padding: var(--space-xl) var(--space-lg);
    background: var(--black);
    color: var(--white);
}

.curriculum-physical-title {
    font-family: var(--font-mono);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-xl);
}

.physical-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    max-width: 900px;
    margin: 0 auto;
}

.physical-method {
    padding: var(--space-md);
}

.physical-icon {
    width: 80px;
    height: 80px;
    display: block;
    margin: 0 auto var(--space-md);
    opacity: 0.9;
    color: var(--white);
    stroke: currentColor;
    fill: none;
}

.physical-icon path,
.physical-icon line,
.physical-icon circle {
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

.physical-icon circle {
    fill: currentColor;
}

.physical-method h4 {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.physical-method p {
    font-size: 1rem;
    opacity: 0.8;
    line-height: 1.6;
}

/* ============================================
   WHO SECTION
   ============================================ */
.who-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.who-content .text-large {
    margin-bottom: var(--space-lg);
    font-size: clamp(1.5rem, 3vw, 2.25rem);
}

.who-prereq {
    font-size: 1.375rem;
    margin-bottom: var(--space-lg);
    opacity: 0.9;
    line-height: 1.7;
}

.who-prereq strong {
    color: var(--accent);
}

.who-community {
    font-size: 1.125rem;
    opacity: 0.8;
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--gray-mid);
    border-bottom: 1px solid var(--gray-mid);
    margin-top: var(--space-lg);
    line-height: 1.7;
}

/* ============================================
   DETAILS SECTION
   ============================================ */
.details-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.detail-card {
    padding: var(--space-lg);
    border: 1px solid var(--gray-light);
    background: var(--white);
    transition: var(--transition-smooth);
}

.detail-card:hover {
    border-color: var(--black);
}

.detail-heading {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.detail-card p {
    font-size: 1.125rem;
    opacity: 0.8;
    line-height: 1.7;
}

.details-note {
    text-align: center;
    font-size: 1rem;
    opacity: 0.7;
    padding: var(--space-md);
    border-top: 1px solid var(--gray-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   CTA SECTION
   ============================================ */
.section--cta {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.section--cta .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 70vh;
}

.cta-content {
    margin-bottom: var(--space-xl);
}

.cta-title {
    font-family: var(--font-mono);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.cta-subtitle {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    opacity: 0.7;
    margin-bottom: var(--space-lg);
}

.cta-description {
    font-size: 1.25rem;
    max-width: 550px;
    margin: 0 auto var(--space-xl);
    opacity: 0.9;
    line-height: 1.7;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.cta-tagline {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--gray-mid);
    width: 100%;
    max-width: 700px;
}

.cta-tagline p {
    font-family: var(--font-mono);
    font-size: 1rem;
    letter-spacing: 0.05em;
    opacity: 0.6;
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ============================================
   APPLICATION FORM
   ============================================ */
.application-form {
    max-width: 700px;
    margin: var(--space-xl) auto;
    padding: var(--space-lg);
    background: var(--gray-dark);
    border: 1px solid var(--gray-mid);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
    color: var(--white);
    opacity: 0.9;
}

.required {
    color: var(--accent);
    opacity: 1;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-sm);
    background: var(--black);
    border: 1px solid var(--gray-mid);
    color: var(--white);
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    transition: var(--transition-smooth);
    -webkit-appearance: none;
    appearance: none;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--white);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-mid);
    opacity: 0.6;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-xl);
    flex-wrap: wrap;
}

.form-actions .btn {
    flex: 1;
    min-width: 150px;
}

.form-message {
    margin-top: var(--space-lg);
    padding: var(--space-md);
    border: 1px solid var(--gray-mid);
    background: var(--black);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    line-height: 1.6;
    display: none;
}

.form-message.show {
    display: block;
}

.form-message.success {
    border-color: #4caf50;
    color: #4caf50;
}

.form-message.error {
    border-color: #f44336;
    color: #f44336;
}

.form-message.loading {
    border-color: var(--gray-mid);
    color: var(--white);
    opacity: 0.8;
}

/* Section adjustments for form */
.section--cta {
    min-height: auto;
    padding-bottom: var(--space-xl);
}

.section--cta .container {
    min-height: auto;
}

/* ============================================
   CONTENT IMAGES
   ============================================ */
.content-image {
    width: 100%;
    height: auto;
    display: block;
    margin: var(--space-lg) auto;
    border: 1px solid var(--gray-mid);
    filter: grayscale(100%) contrast(1.1);
    transition: var(--transition-smooth);
    max-width: 800px;
}

.section--light .content-image {
    border-color: var(--gray-light);
}

.content-image:hover {
    filter: grayscale(70%) contrast(1.2);
    transform: translateY(-2px);
}

.about-image {
    margin: var(--space-md) 0;
}

.experience-image {
    margin: var(--space-xl) auto;
    max-width: 700px;
}

.who-image {
    margin: var(--space-lg) auto var(--space-xl);
    max-width: 500px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--gray-mid);
}

.who-image .content-image {
    border: none;
    margin: 0;
    border-radius: 50%;
}

.details-image {
    margin: var(--space-xl) auto;
    max-width: 600px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: var(--space-md);
    background: var(--black);
    border-top: 1px solid var(--gray-mid);
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.footer-year {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    opacity: 0.5;
}

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

@keyframes triangleReveal {
    from {
        clip-path: polygon(50% 50%, 50% 50%, 50% 50%);
        opacity: 0;
    }
    to {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
        opacity: 1;
    }
}

/* Section reveal animation */
.section-content {
    opacity: 0;
    animation: fadeInUp 0.8s var(--transition-slow) forwards;
}

.section.revealed .section-content {
    animation-play-state: running;
}

/* Staggered children */
.stagger-in > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-in.visible > *:nth-child(1) { transition-delay: 0.1s; }
.stagger-in.visible > *:nth-child(2) { transition-delay: 0.2s; }
.stagger-in.visible > *:nth-child(3) { transition-delay: 0.3s; }
.stagger-in.visible > *:nth-child(4) { transition-delay: 0.4s; }
.stagger-in.visible > *:nth-child(5) { transition-delay: 0.5s; }
.stagger-in.visible > *:nth-child(6) { transition-delay: 0.6s; }
.stagger-in.visible > *:nth-child(7) { transition-delay: 0.7s; }
.stagger-in.visible > *:nth-child(8) { transition-delay: 0.8s; }
.stagger-in.visible > *:nth-child(9) { transition-delay: 0.9s; }

.stagger-in.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .curriculum-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .physical-methods {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 900px) {
    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--black);
        flex-direction: column;
        padding: var(--space-md);
        gap: var(--space-sm);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition-smooth);
    }
    
    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
}

@media (max-width: 768px) {
    :root {
        --space-lg: 3rem;
        --space-xl: 5rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .curriculum-grid {
        grid-template-columns: 1fr;
    }
    
    .physical-methods {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .details-grid {
        grid-template-columns: 1fr;
    }
    
    .experience-breakdown {
        flex-direction: column;
    }
    
    .experience-divider {
        transform: rotate(90deg);
    }
    
    .hero-logo {
        width: 200px;
        height: 200px;
    }
}

@media (max-width: 480px) {
    .section {
        padding: calc(60px + var(--space-md)) var(--space-sm) var(--space-md);
    }
    
    .hero-meta {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        text-align: center;
    }
}