/* ============================================
   MINIMALIST PORTFOLIO - LIGHT THEME
   Inspired by modern editorial design
   ============================================ */

/* CSS Variables */
:root {
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #1a1a1a;
    --border-light: #e0e0e0;
    --accent: #1a1a1a;

    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.5rem 0;
    background: transparent;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(245, 245, 245, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
}

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

.nav-brand {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    transition: var(--transition);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: var(--bg-primary);
}

/* Grain Texture - Irregular Breathing Effect */
.hero-grain {
    position: absolute;
    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");
    pointer-events: none;
}

/* Quadrant 1: Top-left */
.grain-1 {
    top: 0;
    left: 0;
    width: 55%;
    height: 55%;
    animation: grainBreathe1 5s ease-in-out infinite;
}

/* Quadrant 2: Top-right */
.grain-2 {
    top: 0;
    right: 0;
    width: 55%;
    height: 55%;
    animation: grainBreathe2 4s ease-in-out infinite;
    animation-delay: -1.5s;
}

/* Quadrant 3: Bottom-left */
.grain-3 {
    bottom: 0;
    left: 0;
    width: 55%;
    height: 55%;
    animation: grainBreathe3 6s ease-in-out infinite;
    animation-delay: -2.5s;
}

/* Quadrant 4: Bottom-right */
.grain-4 {
    bottom: 0;
    right: 0;
    width: 55%;
    height: 55%;
    animation: grainBreathe4 4.5s ease-in-out infinite;
    animation-delay: -0.8s;
}

@keyframes grainBreathe1 {

    0%,
    100% {
        opacity: 0.1;
    }

    50% {
        opacity: 0.4;
    }
}

@keyframes grainBreathe2 {

    0%,
    100% {
        opacity: 0.15;
    }

    50% {
        opacity: 0.45;
    }
}

@keyframes grainBreathe3 {

    0%,
    100% {
        opacity: 0.12;
    }

    50% {
        opacity: 0.38;
    }
}

@keyframes grainBreathe4 {

    0%,
    100% {
        opacity: 0.18;
    }

    50% {
        opacity: 0.42;
    }
}

/* Corner Decorations */
.corner-decoration {
    position: absolute;
    width: 60px;
    height: 60px;
    pointer-events: none;
}

.corner-decoration::before,
.corner-decoration::after {
    content: '';
    position: absolute;
    background: var(--text-primary);
}

.corner-decoration::before {
    width: 2px;
    height: 60px;
    left: 50%;
    transform: translateX(-50%);
}

.corner-decoration::after {
    width: 60px;
    height: 2px;
    top: 50%;
    transform: translateY(-50%);
}

.top-left {
    top: 3rem;
    left: 3rem;
}

.top-right {
    top: 3rem;
    right: 3rem;
}

.bottom-left {
    bottom: 3rem;
    left: 3rem;
}

.bottom-right {
    bottom: 3rem;
    right: 3rem;
}

/* Center Circle */
.hero-circle {
    position: absolute;
    width: min(50vw, 400px);
    height: min(50vw, 400px);
    border: 2px solid rgba(26, 26, 26, 0.15);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 0;
}

/* Hero Content */
.hero-content {
    text-align: center;
    z-index: 1;
    position: relative;
}

.hero-title-box {
    border: 2px solid var(--border-color);
    padding: 2rem 4rem;
    background: transparent;
    position: relative;
    margin-bottom: 2rem;
}

.hero-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding: 0 0.5rem;
}

.meta-left,
.meta-right {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
}

.meta-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.org-logo {
    width: 24px;
    height: 24px;
}

.hero-title {
    font-size: clamp(2rem, 8vw, 4.5rem);
    font-weight: 900;
    letter-spacing: -0.02em;
    line-height: 1;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    margin-bottom: 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: 0.875rem 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid var(--border-color);
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-secondary);
}

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

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

.btn-secondary:hover {
    background: var(--text-primary);
    color: var(--bg-secondary);
}

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

.btn-outline:hover {
    background: var(--text-primary);
    color: var(--bg-secondary);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.scroll-indicator span {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: var(--text-muted);
    animation: scrollPulse 2s infinite;
}

@keyframes scrollPulse {

    0%,
    100% {
        transform: scaleY(1);
        opacity: 1;
    }

    50% {
        transform: scaleY(0.5);
        opacity: 0.5;
    }
}

/* ============================================
   SECTIONS
   ============================================ */
section {
    padding: 6rem 0;
}

.section-header {
    display: flex;
    align-items: baseline;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.section-number {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-content {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.about-intro {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.about-content p {
    margin-bottom: 1.25rem;
}

.about-content strong {
    color: var(--text-primary);
}

.about-cards {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    transition: var(--transition);
}

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

.card-icon {
    font-size: 1.5rem;
}

.info-card h3 {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.info-card p,
.info-card a {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.info-card a {
    text-decoration: none;
    transition: var(--transition);
}

.info-card a:hover {
    color: var(--text-primary);
}

/* ============================================
   SKILLS SECTION
   ============================================ */
.skills {
    background: var(--bg-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.skill-category {
    padding: 2rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    transition: var(--transition);
}

.skill-category:hover {
    border-color: var(--border-color);
}

.skill-category h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
}

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

.skill-tag {
    padding: 0.5rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.skill-tag:hover {
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* ============================================
   PROJECTS SECTION
   ============================================ */
.projects {
    background: var(--bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.project-card {
    padding: 2rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    transition: var(--transition);
    position: relative;
}

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

.project-card.featured {
    grid-column: span 2;
}

.project-badge {
    display: inline-block;
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.375rem 0.75rem;
    background: var(--text-primary);
    color: var(--bg-secondary);
    margin-bottom: 1rem;
}

.project-badge.ai {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.project-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.project-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.25rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.project-tech span {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.project-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
}

.project-link:hover {
    background: var(--text-primary);
    color: var(--bg-secondary);
}

.project-link.demo {
    background: var(--text-primary);
    color: var(--bg-secondary);
}

.project-link.demo:hover {
    background: transparent;
    color: var(--text-primary);
}

.projects-cta {
    text-align: center;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    background: var(--bg-primary);
}

.contact-intro {
    font-size: 1.25rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 3rem;
}

.contact-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    text-decoration: none;
    transition: var(--transition);
}

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

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--text-primary);
    color: var(--bg-secondary);
    font-weight: 800;
    font-size: 0.875rem;
}

.contact-card strong {
    display: block;
    font-size: 0.875rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.contact-card span {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--text-primary);
    color: var(--bg-secondary);
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    font-size: 0.875rem;
    opacity: 0.7;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .project-card.featured {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2rem;
        transition: var(--transition);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active span:first-child {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:last-child {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .corner-decoration {
        width: 40px;
        height: 40px;
    }

    .corner-decoration::before {
        height: 40px;
    }

    .corner-decoration::after {
        width: 40px;
    }

    .top-left,
    .bottom-left {
        left: 1.5rem;
    }

    .top-right,
    .bottom-right {
        right: 1.5rem;
    }

    .top-left,
    .top-right {
        top: 1.5rem;
    }

    .bottom-left,
    .bottom-right {
        bottom: 1.5rem;
    }

    .hero-title-box {
        padding: 1.5rem 2rem;
    }

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

    section {
        padding: 4rem 0;
    }

    .section-header {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-title-box {
        padding: 1.25rem 1.5rem;
    }

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

    .btn {
        width: 100%;
        text-align: center;
    }
}

/* Aspect ratio adaptations for 16:10 and similar */
@media (aspect-ratio >=16/10) {
    .hero {
        min-height: 100vh;
    }

    .hero-circle {
        width: min(45vw, 350px);
        height: min(45vw, 350px);
    }
}

@media (aspect-ratio >=16/9) {
    .hero-title-box {
        padding: 2rem 5rem;
    }
}

/* ============================================
   REVEAL ANIMATIONS
   ============================================ */
.reveal-element {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-element.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Hero always visible */
#hero {
    opacity: 1 !important;
    transform: none !important;
}

/* Staggered card animations */
.project-card,
.skill-category,
.contact-card {
    transition: opacity 0.5s ease, transform 0.5s ease, border-color 0.3s ease;
}

.project-card:nth-child(1) {
    transition-delay: 0.1s;
}

.project-card:nth-child(2) {
    transition-delay: 0.2s;
}

.project-card:nth-child(3) {
    transition-delay: 0.3s;
}

.project-card:nth-child(4) {
    transition-delay: 0.4s;
}

/* ============================================
   ORGANIZATION PAGE
   ============================================ */
.org-hero {
    padding: 10rem 0 6rem;
    background: var(--bg-primary);
    text-align: center;
}

.org-hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.org-hero-logo {
    width: 150px;
    height: 150px;
}

.org-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 900;
    letter-spacing: 0.1em;
    color: var(--text-primary);
}

.org-tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.org-about {
    background: var(--bg-secondary);
    padding: 6rem 0;
}

.org-about-content {
    max-width: 800px;
}

.org-intro {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.org-about-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.org-projects {
    background: var(--bg-primary);
    padding: 6rem 0;
}