/* ============================================
   SHIVIKA TIWARI - MAKEUP ARTIST PORTFOLIO
   Elegant & Minimal Design
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-black: #1a1a1a;
    --color-white: #ffffff;
    --color-cream: #faf9f7;
    --color-grey-light: #f5f4f2;
    --color-grey: #999999;
    --color-grey-dark: #666666;
    --color-accent: #c9a87c;
    --color-accent-dark: #b8956a;

    /* Typography */
    --font-heading: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Layout */
    --header-height: 80px;
    --max-width: 1400px;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--color-black);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    color: var(--color-accent);
}

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

ul {
    list-style: none;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 400;
    line-height: 1.3;
}

h1 {
    font-size: 2.5rem;
    letter-spacing: 0.02em;
}

h2 {
    font-size: 1.75rem;
    letter-spacing: 0.02em;
}

p {
    margin-bottom: 1em;
}

p:last-child {
    margin-bottom: 0;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-white);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo */
.logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-decoration: none;
}

.logo-name {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-black);
}

.logo-title {
    font-family: var(--font-body);
    font-size: 0.7rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-grey);
}

/* Navigation */
.main-nav .nav-list {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-grey-dark);
    padding: var(--spacing-xs) 0;
    position: relative;
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--color-black);
}

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    width: 30px;
    height: 24px;
    position: relative;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    width: 100%;
    height: 1px;
    background-color: var(--color-black);
    position: absolute;
    transition: all var(--transition-normal);
}

.hamburger {
    top: 50%;
    transform: translateY(-50%);
}

.hamburger::before {
    content: '';
    top: -8px;
}

.hamburger::after {
    content: '';
    bottom: -8px;
}

.mobile-menu-toggle.active .hamburger {
    background-color: transparent;
}

.mobile-menu-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-toggle.active .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main-content {
    padding-top: var(--header-height);
    min-height: 100vh;
}

.section {
    display: none;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.section.active {
    display: block;
    opacity: 1;
}

/* ============================================
   PORTFOLIO SECTION
   ============================================ */
.portfolio-section {
    padding: var(--spacing-xl) var(--spacing-lg);
}

/* Category Navigation */
.category-nav {
    max-width: var(--max-width);
    margin: 0 auto var(--spacing-xl);
    text-align: center;
}

.category-list {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm) var(--spacing-lg);
}

.category-btn {
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-grey);
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.category-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-black);
    transition: width var(--transition-normal);
}

.category-btn:hover,
.category-btn.active {
    color: var(--color-black);
}

.category-btn.active::after {
    width: 100%;
}

/* Gallery Container */
.gallery-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

/* Photo Grid - Masonry Style with Varied Sizes */
.photo-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 200px;
    gap: var(--spacing-md);
}

.photo-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    background-color: var(--color-grey-light);
}

/* First image - Hero/Featured - bigger and more prominent */
.photo-item:first-child {
    grid-column: span 2;
    grid-row: span 3;
}

/* Varied sizes for visual interest */
.photo-item:nth-child(6n+2) {
    grid-row: span 2;
}

.photo-item:nth-child(8n+4) {
    grid-row: span 2;
}

.photo-item:nth-child(10n+6) {
    grid-column: span 2;
}

.photo-item:nth-child(12n+8) {
    grid-row: span 2;
}

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

.photo-item:hover img {
    transform: scale(1.03);
    opacity: 0.9;
}

.photo-item.expanded {
    outline: 2px solid var(--color-accent);
}

/* Expanded View */
.expanded-view {
    display: none;
    max-width: var(--max-width);
    margin: 0 auto var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--color-grey-light);
    position: relative;
}

.expanded-view.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.close-expanded {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-size: 2rem;
    color: var(--color-grey-dark);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast);
    z-index: 10;
}

.close-expanded:hover {
    color: var(--color-black);
}

.expanded-photos {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.expanded-photo {
    max-width: 100%;
    cursor: pointer;
}

.expanded-photo img {
    max-width: 100%;
    max-height: 80vh;
    width: auto;
    height: auto;
    object-fit: contain;
}

/* ============================================
   INSTAGRAM SECTION
   ============================================ */
.instagram-section {
    padding: var(--spacing-xxl) var(--spacing-lg);
    background-color: var(--color-cream);
}

.instagram-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.instagram-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.instagram-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    font-weight: 300;
}

.instagram-intro {
    color: var(--color-grey-dark);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

.instagram-follow-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 1rem 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--color-white);
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    border-radius: 30px;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.instagram-follow-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(225, 48, 108, 0.4);
    color: var(--color-white);
}

.instagram-follow-btn svg {
    flex-shrink: 0;
}

.instagram-feed {
    min-height: 400px;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-section {
    padding: var(--spacing-xxl) var(--spacing-lg);
}

.about-container {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-xxl);
    align-items: start;
}

.about-image {
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-lg));
}

.about-image img {
    width: 100%;
    height: auto;
    aspect-ratio: 3/4;
    object-fit: cover;
}

.about-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    font-weight: 300;
}

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

.about-text p {
    color: var(--color-grey-dark);
}

.about-services h2 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    font-weight: 400;
}

.about-services ul {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xs);
}

.about-services li {
    font-size: 0.875rem;
    color: var(--color-grey-dark);
    padding-left: 1em;
    position: relative;
}

.about-services li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact-section {
    padding: var(--spacing-xxl) var(--spacing-lg);
    background-color: var(--color-cream);
}

.contact-container {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-xxl);
}

.contact-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    font-weight: 300;
}

.contact-intro {
    color: var(--color-grey-dark);
    margin-bottom: var(--spacing-xl);
}

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

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

.contact-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-grey);
    margin-bottom: var(--spacing-xs);
}

.contact-value {
    font-size: 1rem;
    color: var(--color-black);
}

.contact-value:hover {
    color: var(--color-accent);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    color: var(--color-black);
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.social-link:hover {
    color: var(--color-accent);
    transform: translateY(-2px);
}

/* Contact Form */
.contact-form-container {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
}

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

.form-group label {
    display: block;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-grey-dark);
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 300;
    color: var(--color-black);
    background-color: var(--color-cream);
    border: 1px solid transparent;
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background-color: var(--color-white);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    cursor: pointer;
}

.submit-btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-white);
    background-color: var(--color-black);
    border: 2px solid var(--color-black);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.submit-btn:hover {
    color: var(--color-black);
    background-color: transparent;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: var(--spacing-lg);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

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

.copyright {
    font-size: 0.75rem;
    color: var(--color-grey);
}

.footer-social a {
    color: var(--color-grey);
    transition: color var(--transition-fast);
}

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

/* ============================================
   LIGHTBOX
   ============================================ */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    display: none;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.lightbox.active {
    display: flex;
    opacity: 1;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    color: var(--color-white);
    font-size: 2rem;
    padding: 1rem;
    transition: opacity var(--transition-fast);
    opacity: 0.7;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    opacity: 1;
}

.lightbox-close {
    top: 1rem;
    right: 1rem;
    font-size: 2.5rem;
}

.lightbox-prev {
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 3rem;
}

.lightbox-next {
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 3rem;
}

/* ============================================
   LOADING STATE
   ============================================ */
.loading {
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    margin: -15px 0 0 -15px;
    border: 2px solid var(--color-grey-light);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
    .photo-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .about-container,
    .contact-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .about-image {
        position: relative;
        top: 0;
        max-width: 500px;
        margin: 0 auto;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    h1 {
        font-size: 2rem;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: var(--color-white);
        padding: var(--spacing-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

    .main-nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .main-nav .nav-list {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }

    .photo-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .portfolio-section {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .category-list {
        gap: var(--spacing-xs) var(--spacing-md);
    }

    .category-btn {
        font-size: 0.65rem;
    }

    .expanded-view {
        padding: var(--spacing-md);
    }

    .about-services ul {
        grid-template-columns: 1fr;
    }

    .contact-form-container {
        padding: var(--spacing-lg);
    }

    .footer-container {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .logo-name {
        font-size: 1.2rem;
    }

    .logo-title {
        font-size: 0.6rem;
    }

    .photo-grid {
        grid-template-columns: 1fr;
    }

    .photo-item {
        aspect-ratio: 4/5;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Success/Error states for form */
.form-success {
    background-color: #d4edda;
    color: #155724;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: 4px;
    text-align: center;
}

.form-error {
    background-color: #f8d7da;
    color: #721c24;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: 4px;
    text-align: center;
}

/* Empty Category State (Coming Soon) */
.empty-category {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-lg);
    min-height: 400px;
}

.empty-category-icon {
    color: var(--color-accent);
    margin-bottom: var(--spacing-lg);
    opacity: 0.8;
}

.empty-category-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 300;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
}

.empty-category-message {
    font-size: 1rem;
    color: var(--color-grey-dark);
    max-width: 400px;
    line-height: 1.6;
}