/* ========================================
   Saumya Art Portfolio - Stylesheet
   ======================================== */

/* CSS Variables - Light Theme */
:root {
    /* Colors */
    --color-primary: #E85D4C;
    --color-primary-hover: #d44d3c;
    --color-background: #FAFAFA;
    --color-surface: #FFFFFF;
    --color-text: #2D2D2D;
    --color-text-secondary: #6B6B6B;
    --color-border: #E5E5E5;
    
    /* Typography */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'DM Sans', -apple-system, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.16);
}

/* CSS Variables - Dark Theme */
[data-theme="dark"] {
    --color-background: #1A1A1A;
    --color-surface: #252525;
    --color-text: #F5F5F5;
    --color-text-secondary: #A0A0A0;
    --color-border: #3A3A3A;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-background);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all var(--transition-normal);
    cursor: pointer;
}

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

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

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

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--color-surface);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
}

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

.nav-links a {
    font-weight: 500;
    position: relative;
}

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

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

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-background);
    transition: all var(--transition-normal);
}

.theme-toggle:hover {
    background-color: var(--color-border);
}

.theme-toggle .sun-icon {
    display: block;
}

.theme-toggle .moon-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: block;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-normal);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-sm);
    position: relative;
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-surface) 100%);
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.hero .btn {
    margin-top: var(--spacing-sm);
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 1; transform: scaleY(1); }
    50% { opacity: 0.5; transform: scaleY(0.8); }
}

/* ========================================
   Page Header
   ======================================== */
.page-header {
    padding: calc(var(--spacing-xl) + 60px) var(--spacing-sm) var(--spacing-lg);
    text-align: center;
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-surface) 100%);
}

.page-header h1 {
    margin-bottom: var(--spacing-xs);
}

.page-header p {
    color: var(--color-text-secondary);
    font-size: 1.125rem;
}

/* ========================================
   Section Styles
   ======================================== */
section {
    padding: var(--spacing-lg) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xs);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.section-cta {
    text-align: center;
    margin-top: var(--spacing-md);
}

/* ========================================
   Featured Works
   ======================================== */
.featured-works {
    background-color: var(--color-surface);
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-sm);
}

.featured-item {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    aspect-ratio: 3/4;
    cursor: pointer;
}

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

.featured-item:hover img {
    transform: scale(1.1);
}

.featured-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: white;
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.featured-item:hover .featured-overlay {
    transform: translateY(0);
}

.featured-overlay h3 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.featured-overlay p {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* ========================================
   Latest Works
   ======================================== */
.latest-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
}

.latest-item {
    overflow: hidden;
    border-radius: 12px;
    aspect-ratio: 4/5;
}

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

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

/* ========================================
   Instagram Section
   ======================================== */
.instagram-section {
    background-color: var(--color-primary);
    color: white;
    text-align: center;
}

.instagram-section .section-title,
.instagram-section .section-subtitle {
    color: white;
}

.instagram-section .btn {
    background-color: white;
    color: var(--color-primary);
}

.instagram-section .btn:hover {
    background-color: var(--color-background);
}

/* ========================================
   Gallery Page
   ======================================== */
.gallery-section {
    padding-top: 80px;
}

.gallery-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: var(--spacing-md);
}

.filter-btn {
    padding: 0.625rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: 50px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    transition: all var(--transition-normal);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-sm);
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    cursor: pointer;
    transition: opacity var(--transition-normal);
}

.gallery-item.hidden {
    display: none;
}

.gallery-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-slow);
}

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

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 50%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-sm);
    color: white;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.gallery-overlay h3 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}

.gallery-overlay p {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* ========================================
   Lightbox
   ======================================== */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background-color: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-img {
    max-width: 90%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 4px;
}

.lightbox-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 50px;
    height: 50px;
    font-size: 2rem;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

.lightbox-close:hover {
    transform: rotate(90deg);
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.lightbox-prev {
    left: 1rem;
}

.lightbox-next {
    right: 1rem;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    color: var(--color-primary);
}

/* ========================================
   About Page
   ======================================== */
.about-section {
    padding-top: 80px;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-image img {
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.about-text h2 {
    margin-bottom: var(--spacing-sm);
}

.about-text .lead {
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.about-text p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
}

.about-signature {
    margin-top: var(--spacing-md);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-style: italic;
    color: var(--color-text);
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background-color: var(--color-border);
}

.timeline-item {
    position: relative;
    padding: var(--spacing-sm) 0;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    padding-right: var(--spacing-md);
    text-align: right;
}

.timeline-item:nth-child(even) {
    padding-left: var(--spacing-md);
    margin-left: 50%;
}

.timeline-dot {
    position: absolute;
    top: calc(var(--spacing-sm) + 10px);
    width: 16px;
    height: 16px;
    background-color: var(--color-primary);
    border-radius: 50%;
    border: 3px solid var(--color-background);
}

.timeline-item:nth-child(odd) .timeline-dot {
    right: -8px;
}

.timeline-item:nth-child(even) .timeline-dot {
    left: -8px;
}

.timeline-date {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--color-primary);
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--color-text-secondary);
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-sm);
}

.skill-card {
    background-color: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.skill-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background-color: var(--color-background);
    border-radius: 50%;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.skill-card h3 {
    margin-bottom: 0.5rem;
}

.skill-card p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

/* ========================================
   Contact Page
   ======================================== */
.contact-section {
    padding-top: 80px;
    padding-bottom: var(--spacing-lg);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
}

.contact-form-wrapper h2,
.contact-info-card h2 {
    margin-bottom: var(--spacing-sm);
}

.contact-form-wrapper p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(232, 93, 76, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-secondary);
}

.contact-form .btn {
    width: 100%;
    margin-top: var(--spacing-sm);
}

/* Contact Info */
.contact-info-card {
    background-color: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.contact-info-card > p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.contact-details {
    margin-bottom: var(--spacing-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: var(--color-background);
    border-radius: 50%;
    color: var(--color-primary);
}

.contact-text h3 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.contact-text p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.social-links h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
}

.social-icons-large {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--color-background);
    border-radius: 50px;
    font-weight: 500;
    transition: all var(--transition-normal);
}

.social-link:hover {
    background-color: var(--color-primary);
    color: white;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background-color: var(--color-surface);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-brand h3 {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--color-text-secondary);
}

.footer-links h4,
.footer-social h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-background);
    border-radius: 50%;
    color: var(--color-text);
    transition: all var(--transition-normal);
}

.social-icons a:hover {
    background-color: var(--color-primary);
    color: white;
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* ========================================
   Animations
   ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

/* Staggered animation delays */
.featured-item:nth-child(1) { transition-delay: 0.1s; }
.featured-item:nth-child(2) { transition-delay: 0.15s; }
.featured-item:nth-child(3) { transition-delay: 0.2s; }
.featured-item:nth-child(4) { transition-delay: 0.25s; }
.featured-item:nth-child(5) { transition-delay: 0.3s; }
.featured-item:nth-child(6) { transition-delay: 0.35s; }

.latest-item:nth-child(1) { transition-delay: 0.1s; }
.latest-item:nth-child(2) { transition-delay: 0.15s; }
.latest-item:nth-child(3) { transition-delay: 0.2s; }
.latest-item:nth-child(4) { transition-delay: 0.25s; }

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-image {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-brand {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--color-surface);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-md);
        transform: translateY(-150%);
        transition: transform var(--transition-normal);
    }
    
    .nav-links.active {
        transform: translateY(0);
    }
    
    .latest-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .timeline::before {
        left: 8px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 40px !important;
        padding-right: 0 !important;
        margin-left: 0 !important;
        text-align: left !important;
    }
    
    .timeline-dot {
        left: 0 !important;
        right: auto !important;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-brand {
        grid-column: auto;
    }
}

@media (max-width: 480px) {
    .featured-grid {
        grid-template-columns: 1fr;
    }
    
    .latest-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-filters {
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    .contact-form-wrapper,
    .contact-info-card {
        padding: var(--spacing-sm);
    }
}