/* ========================================
   Portfolio - Global Styles
   Inspired by springsummer.dk
   ======================================== */

/* CSS Variables */
:root {
    --text-color: 255, 255, 255;
    --background-color: 10, 10, 20;
    --accent-color: 233, 69, 96;
    --secondary-color: 123, 44, 191;
    --tertiary-color: 0, 180, 216;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --header-height: 4rem;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);

    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: rgba(var(--background-color), 1);
    color: rgba(var(--text-color), 1);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ========================================
   Loading Animation
   ======================================== */

.loader {
    position: fixed;
    inset: 0;
    background: rgba(var(--background-color), 1);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s var(--ease-out-expo), visibility 0.5s;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-line {
    width: 1px;
    height: 0;
    background: rgba(var(--text-color), 1);
    transition: height 0.8s var(--ease-out-expo);
}

.loader.active .loader-line {
    height: 100px;
}

.loader-text {
    margin-top: 1.5rem;
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s, transform 0.4s var(--ease-out-expo);
}

.loader.active .loader-text {
    opacity: 0.5;
    transform: translateY(0);
}

/* ========================================
   Background Effects
   ======================================== */

.bg-effects {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    animation: float 25s ease-in-out infinite;
}

.bg-orb-1 {
    width: 500px;
    height: 500px;
    background: rgba(var(--accent-color), 0.5);
    top: -150px;
    left: -150px;
}

.bg-orb-2 {
    width: 400px;
    height: 400px;
    background: rgba(var(--secondary-color), 0.5);
    top: 40%;
    right: -100px;
    animation-delay: -8s;
}

.bg-orb-3 {
    width: 450px;
    height: 450px;
    background: rgba(var(--tertiary-color), 0.4);
    bottom: -100px;
    left: 25%;
    animation-delay: -15s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(40px, -40px) rotate(5deg); }
    50% { transform: translate(-30px, 30px) rotate(-5deg); }
    75% { transform: translate(50px, 20px) rotate(3deg); }
}

/* Noise Overlay */
.noise-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ========================================
   Glass Navigation
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: 1000;
    padding: 0 2rem;
    transition: transform var(--transition-medium), background var(--transition-fast);
}

.header.scrolled {
    background: rgba(var(--background-color), 0.7);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(var(--text-color), 0.05);
}

.header-inner {
    max-width: 1400px;
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: rgba(var(--text-color), 1);
    text-decoration: none;
    position: relative;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: rgba(var(--text-color), 1);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-fast);
}

.logo:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-link {
    color: rgba(var(--text-color), 0.6);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    position: relative;
    padding: 0.25rem 0;
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: rgba(var(--text-color), 1);
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: rgba(var(--text-color), 0.3);
    transform: scaleX(0);
    transition: transform var(--transition-fast);
}

.nav-link:hover::before,
.nav-link.active::before {
    transform: scaleX(1);
}

/* Mobile Menu Button */
.menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.menu-btn span {
    display: block;
    width: 24px;
    height: 1px;
    background: rgba(var(--text-color), 1);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.menu-btn.active span:first-child {
    transform: translateY(3px) rotate(45deg);
}

.menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.menu-btn.active span:last-child {
    transform: translateY(-3px) rotate(-45deg);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .header {
        padding: 0 1rem;
    }

    .menu-btn {
        display: flex;
    }

    .nav-links {
        position: fixed;
        inset: 0;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        background: rgba(var(--background-color), 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition-medium), visibility var(--transition-medium);
    }

    .nav-links.active {
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        font-size: 1.25rem;
    }
}

/* ========================================
   Main Content
   ======================================== */

main {
    position: relative;
    z-index: 2;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: calc(var(--header-height) + 2rem) 0 4rem;
}

.hero-content {
    opacity: 0;
    transform: translateY(40px);
    animation: fadeUp 1s var(--ease-out-expo) forwards;
    animation-delay: 0.8s;
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: clamp(3rem, 10vw, 7rem);
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1;
    margin-bottom: 1.5rem;
}

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

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

.hero-subtitle {
    font-size: 1.1rem;
    color: rgba(var(--text-color), 0.5);
    max-width: 400px;
    letter-spacing: 0.01em;
}

.hero-scroll {
    margin-top: 4rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    opacity: 0;
    animation: fadeUp 0.8s var(--ease-out-expo) forwards;
    animation-delay: 1.2s;
}

.hero-scroll-line {
    width: 60px;
    height: 1px;
    background: rgba(var(--text-color), 0.3);
}

.hero-scroll-text {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(var(--text-color), 0.5);
}

/* ========================================
   Section Styles
   ======================================== */

.section {
    padding: 8rem 0;
    position: relative;
}

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

.section-label {
    font-size: 0.7rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: rgba(var(--text-color), 0.4);
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.section-divider {
    width: 80px;
    height: 1px;
    background: linear-gradient(90deg,
        rgba(var(--accent-color), 1),
        rgba(var(--secondary-color), 1)
    );
}

/* ========================================
   Portfolio Grid
   ======================================== */

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.portfolio-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: rgba(var(--text-color), 0.03);
    border: 1px solid rgba(var(--text-color), 0.05);
    cursor: pointer;
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.portfolio-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.portfolio-item:hover img {
    transform: scale(1.05);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(var(--background-color), 0.9) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-overlay h3 {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.portfolio-overlay p {
    font-size: 0.85rem;
    color: rgba(var(--text-color), 0.6);
}

/* ========================================
   Code Cards
   ======================================== */

.code-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 1.5rem;
}

.code-card {
    padding: 2rem;
    background: rgba(var(--text-color), 0.02);
    border: 1px solid rgba(var(--text-color), 0.05);
    border-radius: 16px;
    transition: transform var(--transition-medium), border-color var(--transition-fast);
}

.code-card:hover {
    transform: translateY(-4px);
    border-color: rgba(var(--text-color), 0.1);
}

.code-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.code-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg,
        rgba(var(--accent-color), 0.2),
        rgba(var(--secondary-color), 0.2)
    );
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.code-card h3 {
    font-size: 1.1rem;
    font-weight: 500;
}

.code-card p {
    color: rgba(var(--text-color), 0.6);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    background: rgba(var(--text-color), 0.06);
    padding: 0.4rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    color: rgba(var(--text-color), 0.8);
}

.code-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    color: rgba(var(--text-color), 0.6);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color var(--transition-fast);
}

.code-link:hover {
    color: rgba(var(--text-color), 1);
}

.code-link svg {
    transition: transform var(--transition-fast);
}

.code-link:hover svg {
    transform: translateX(4px);
}

/* ========================================
   Contact Section
   ======================================== */

.contact-section {
    min-height: 60vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.contact-title {
    font-size: clamp(2rem, 6vw, 4rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.contact-text {
    color: rgba(var(--text-color), 0.5);
    max-width: 400px;
    margin-bottom: 3rem;
}

.contact-links {
    display: flex;
    gap: 1rem;
}

.contact-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(var(--text-color), 0.05);
    border: 1px solid rgba(var(--text-color), 0.08);
    color: rgba(var(--text-color), 0.8);
    text-decoration: none;
    transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.contact-link:hover {
    transform: translateY(-4px);
    background: rgba(var(--text-color), 0.1);
    border-color: rgba(var(--text-color), 0.15);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    padding: 2rem;
    text-align: center;
    border-top: 1px solid rgba(var(--text-color), 0.05);
}

.footer p {
    font-size: 0.8rem;
    color: rgba(var(--text-color), 0.4);
    letter-spacing: 0.02em;
}

/* ========================================
   Page Header
   ======================================== */

.page-header {
    min-height: 50vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: calc(var(--header-height) + 2rem) 0 4rem;
}

.page-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.page-desc {
    font-size: 1.1rem;
    color: rgba(var(--text-color), 0.5);
    max-width: 500px;
    margin-top: 1rem;
}

/* ========================================
   Animations
   ======================================== */

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animations */
.stagger-item {
    opacity: 0;
    transform: translateY(20px);
}

.stagger-item.visible {
    animation: staggerIn 0.6s var(--ease-out-expo) forwards;
}

@keyframes staggerIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 768px) {
    .container {
        padding: 0 1.25rem;
    }

    .section {
        padding: 5rem 0;
    }

    .portfolio-grid,
    .code-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: calc(var(--header-height) + 1rem) 0 3rem;
    }

    .contact-links {
        flex-wrap: wrap;
    }
}