/* ==========================================================================
   MAIN PORTFOLIO STYLES
   Modern, minimalist design system for professional portfolio
   ========================================================================== */

/* --------------------------------------------------------------------------
   IMPORTS & RESET
   -------------------------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* Colors */
    --black: #000000;
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;    
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    
    --blue: #2563eb;
    --purple: #7c3aed;
    --teal: #0d9488;
    
    /* Layout */
    --spacing: 8px;
    --container: 1440px;
    --gutter: 80px;
    
    /* Animation */
    --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
     --care-blue: #4B6FAF;
  --care-blue-soft: rgba(75,111,175,0.18);
  --care-blue-softer: rgba(75,111,175,0.10);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--black);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--black);
    color: var(--white);
}

/* --------------------------------------------------------------------------
   NAVIGATION
   -------------------------------------------------------------------------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: transform 0.4s var(--transition-smooth);
}

.nav-wrapper {
    max-width: var(--container);
    margin: 0 auto;
    padding: calc(var(--spacing) * 3) var(--gutter);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing) * 1.5);
    text-decoration: none;
    color: var(--black);
    font-size: 0.9rem;
}

.logo-mark {
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo-divider {
    color: var(--gray-300);
}

.logo-name {
    font-weight: 500;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s var(--transition-smooth);
}

.nav-logo:hover .logo-name {
    opacity: 1;
    transform: translateX(0);
}

.nav-menu {
    display: flex;
    gap: calc(var(--spacing) * 5);
    list-style: none;
}

.nav-menu a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-500);
    text-decoration: none;
    transition: color 0.2s ease;
    position: relative;
}

.nav-menu a::before {
    content: attr(data-index);
    position: absolute;
    left: -22px;
    font-size: 0.75rem;
    color: var(--gray-300);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.nav-menu a:hover {
    color: var(--black);
}

.nav-menu a:hover::before {
    opacity: 1;
}

/* --------------------------------------------------------------------------
   HERO SECTION
   -------------------------------------------------------------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--spacing) * 20) 0 calc(var(--spacing) * 15);
    position: relative;
}

.hero-wrapper {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.hero-eyebrow {
    display: flex;
    gap: calc(var(--spacing) * 8);
    margin-bottom: calc(var(--spacing) * 12);
    padding-bottom: calc(var(--spacing) * 4);
    border-bottom: 1px solid var(--gray-200);
}

.eyebrow-item {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing) * 1);
}

.eyebrow-label {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--gray-400);
}

.eyebrow-value {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--black);
    display: flex;
    align-items: center;
    gap: calc(var(--spacing) * 1);
}

.status-dot {
    width: 6px;
    height: 6px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-size: clamp(3rem, 7vw, 6.5rem);
    font-weight: 500;
    line-height: 1.05;
    letter-spacing: -0.04em;
    margin-bottom: calc(var(--spacing) * 8);
    max-width: 1200px;
}

.title-line {
    display: block;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s var(--transition-smooth) forwards;
}

.title-line[data-scroll="0"] { animation-delay: 0.1s; }
.title-line[data-scroll="1"] { animation-delay: 0.2s; }
.title-line[data-scroll="2"] { animation-delay: 0.3s; }
.title-line[data-scroll="3"] { animation-delay: 0.4s; }

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

.hero-description {
    max-width: 580px;
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--gray-600);
    margin-bottom: calc(var(--spacing) * 10);
}

.hero-scroll {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing) * 2);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--gray-400);
}

.hero-scroll svg {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* --------------------------------------------------------------------------
   WORK SECTION
   -------------------------------------------------------------------------- */
.work {
    padding: calc(var(--spacing) * 20) 0;
}

.work-wrapper {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: calc(var(--spacing) * 15);
    padding-bottom: calc(var(--spacing) * 6);
    border-bottom: 1px solid var(--gray-200);
}

.section-label {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing) * 2);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.section-number {
    color: var(--gray-400);
}

.section-divider {
    color: var(--gray-300);
}

.section-name {
    color: var(--black);
}

.section-description {
    max-width: 480px;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--gray-600);
}

/* --------------------------------------------------------------------------
   PROJECT CARDS
   -------------------------------------------------------------------------- */
.project {
    display: grid;
    grid-template-columns: 60px 1fr;
    gap: calc(var(--spacing) * 8);
    margin-bottom: calc(var(--spacing) * 30);
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s var(--transition-smooth);
}

.project.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-number {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--gray-300);
    padding-top: 4px;
}

.project-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--spacing) * 10);
    align-items: start;
}

.project-preview {
    position: sticky;
    top: 120px;
}

.preview-container {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--gray-200);
    background: var(--gray-50);
    border-radius: 8px;
}

.preview-image {
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: transform 0.6s var(--transition-smooth);
}

.preview-container:hover .preview-image {
    transform: scale(1.05);
}

.preview-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: calc(var(--spacing) * 2);
    opacity: 0;
    transition: opacity 0.3s ease;
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
}

.preview-container:hover .preview-overlay {
    opacity: 1;
}

.project-badge {
    position: absolute;
    top: calc(var(--spacing) * 3);
    right: calc(var(--spacing) * 3);
    padding: calc(var(--spacing) * 1) calc(var(--spacing) * 2);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--black);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

/* Gradient backgrounds for project previews */
.gradient-cyan {
    background: linear-gradient(135deg, #0891b2 0%, #06b6d4 50%, #22d3ee 100%);
}

.gradient-purple {
    background: linear-gradient(135deg, #581c87 0%, #7c3aed 50%, #a78bfa 100%);
}

.gradient-orange {
    background: linear-gradient(135deg, #ea580c 0%, #f97316 50%, #fb923c 100%);
}

.gradient-blue {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #60a5fa 100%);
}

.project-content {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing) * 6);
}

.project-header {
    padding-bottom: calc(var(--spacing) * 4);
    border-bottom: 1px solid var(--gray-200);
}

.project-meta {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing) * 1.5);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--gray-400);
    margin-bottom: calc(var(--spacing) * 3);
}

.meta-status {
    color: var(--black);
    font-weight: 600;
}

.project-title {
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: calc(var(--spacing) * 2);
    color: var(--black);
}

.project-subtitle {
    font-size: 1.125rem;
    font-weight: 400;
    color: var(--gray-500);
    letter-spacing: -0.01em;
}

.project-details {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing) * 3);
}

.detail-group {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing) * 1);
}

.detail-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--gray-400);
}

.detail-value {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--gray-600);
}

.project-description {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing) * 3);
}

.project-description p {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--gray-600);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: calc(var(--spacing) * 2);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--black);
    text-decoration: none;
    padding: calc(var(--spacing) * 2) 0;
    transition: gap 0.3s var(--transition-smooth);
    width: fit-content;
}

.project-link:hover {
    gap: calc(var(--spacing) * 3);
}

.project-link svg {
    transition: transform 0.3s var(--transition-smooth);
}

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

/* --------------------------------------------------------------------------
   ABOUT SECTION
   -------------------------------------------------------------------------- */
.about {
    padding: calc(var(--spacing) * 20) 0;
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
}

.about-wrapper {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: calc(var(--spacing) * 12);
}

.about-intro {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing) * 6);
}

.about-lead {
    font-size: 1.75rem;
    font-weight: 400;
    line-height: 1.4;
    letter-spacing: -0.02em;
    color: var(--black);
}

.about-body {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing) * 4);
}

.about-body p {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--gray-600);
}

.about-expertise {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing) * 8);
}

.expertise-section {
    padding: calc(var(--spacing) * 4) 0;
    border-top: 1px solid var(--gray-200);
}

.expertise-title {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--gray-400);
    margin-bottom: calc(var(--spacing) * 3);
}

.expertise-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing) * 2);
}

.expertise-list li {
    font-size: 0.9rem;
    color: var(--gray-600);
    padding-left: calc(var(--spacing) * 2);
    position: relative;
}

.expertise-list li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--gray-300);
}

/* --------------------------------------------------------------------------
   CONTACT SECTION
   -------------------------------------------------------------------------- */
.contact {
    padding: calc(var(--spacing) * 25) 0;
    border-top: 1px solid var(--gray-200);
}

.contact-wrapper {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.contact-content {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing) * 10);
}

.contact-intro {
    max-width: 800px;
}

.contact-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 500;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: calc(var(--spacing) * 5);
}

.contact-description {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--gray-600);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.contact-method {
    display: grid;
    grid-template-columns: 140px 1fr auto;
    align-items: center;
    gap: calc(var(--spacing) * 6);
    padding: calc(var(--spacing) * 5) 0;
    border-top: 1px solid var(--gray-200);
    text-decoration: none;
    transition: all 0.3s var(--transition-smooth);
}

.contact-method:hover {
    padding-left: calc(var(--spacing) * 3);
}

.method-label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--gray-400);
}

.method-value {
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--black);
}

.method-arrow {
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s var(--transition-smooth);
}

.contact-method:hover .method-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* --------------------------------------------------------------------------
   FOOTER
   -------------------------------------------------------------------------- */
.footer {
    padding: calc(var(--spacing) * 8) 0;
    border-top: 1px solid var(--gray-200);
}

.footer-wrapper {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-info {
    display: flex;
    gap: calc(var(--spacing) * 4);
    font-size: 0.8rem;
    color: var(--gray-400);
}

.footer-links a {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--gray-500);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--black);
}

/* --------------------------------------------------------------------------
   RESPONSIVE DESIGN
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    :root {
        --gutter: 40px;
    }
    
    .project-main {
        grid-template-columns: 1fr;
    }
    
    .project-preview {
        position: relative;
        top: 0;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --gutter: 24px;
    }
    
    .nav-wrapper {
        padding: calc(var(--spacing) * 2.5) var(--gutter);
    }
    
    .logo-name {
        display: none;
    }
    
    .nav-menu {
        gap: calc(var(--spacing) * 3);
    }
    
    .nav-menu a::before {
        display: none;
    }
    
    .hero {
        padding: calc(var(--spacing) * 15) 0 calc(var(--spacing) * 10);
    }
    
    .hero-eyebrow {
        flex-direction: column;
        gap: calc(var(--spacing) * 4);
    }
    
    .project {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing) * 5);
    }
    
    .project-number {
        display: none;
    }
    
    .section-header {
        flex-direction: column;
        gap: calc(var(--spacing) * 4);
    }
    
    .contact-method {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing) * 2);
    }
    
    .method-arrow {
        display: none;
    }
    
    .footer-wrapper {
        flex-direction: column;
        align-items: flex-start;
        gap: calc(var(--spacing) * 3);
    }
}

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