/* ========================================
   VividPulse - Main Stylesheet
   A vibrant, color-blocked fitness site
   ======================================== */

/* CSS Variables */
:root {
    /* Primary Colors */
    --magenta: #e91e63;
    --magenta-dark: #c2185b;
    --cyan: #00bcd4;
    --cyan-dark: #0097a7;
    --orange: #ff5722;
    --orange-dark: #e64a19;
    --purple: #9c27b0;
    --purple-dark: #7b1fa2;
    --green: #4caf50;
    --green-dark: #388e3c;
    
    /* Neutrals */
    --dark: #1a1a2e;
    --darker: #0f0f1a;
    --light: #ffffff;
    --gray: #f5f5f5;
    --gray-dark: #333;
    
    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-width: 1200px;
    
    /* Animations */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base */
*, *::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: 1.6;
    color: var(--gray-dark);
    background: var(--light);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 800;
    line-height: 1.2;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

@keyframes pulse-ring {
    0% {
        transform: scale(0.8);
        opacity: 1;
    }
    100% {
        transform: scale(2);
        opacity: 0;
    }
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(233, 30, 99, 0.7);
    }
    50% {
        box-shadow: 0 0 0 20px rgba(233, 30, 99, 0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

@keyframes gradient-shift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.pulse-dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    background: var(--magenta);
    border-radius: 50%;
    margin-right: 8px;
    animation: pulse 1.5s ease-in-out infinite;
    position: relative;
}

.pulse-dot::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: var(--magenta);
    border-radius: 50%;
    animation: pulse-ring 1.5s ease-out infinite;
}

.pulse-text {
    background: linear-gradient(90deg, var(--magenta), var(--orange), var(--magenta));
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradient-shift 3s ease infinite;
}

.pulse-button {
    animation: pulse-glow 2s ease-in-out infinite;
}

/* ========================================
   Color Blocks
   ======================================== */

.color-block-magenta {
    background: linear-gradient(135deg, var(--magenta) 0%, var(--magenta-dark) 100%);
    color: var(--light);
}

.color-block-cyan {
    background: linear-gradient(135deg, var(--cyan) 0%, var(--cyan-dark) 100%);
    color: var(--light);
}

.color-block-orange {
    background: linear-gradient(135deg, var(--orange) 0%, var(--orange-dark) 100%);
    color: var(--light);
}

.color-block-purple {
    background: linear-gradient(135deg, var(--purple) 0%, var(--purple-dark) 100%);
    color: var(--light);
}

.color-block-green {
    background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
    color: var(--light);
}

.color-block-dark {
    background: linear-gradient(135deg, var(--dark) 0%, var(--darker) 100%);
    color: var(--light);
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    transition: var(--transition-normal);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--light);
    display: flex;
    align-items: center;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--light);
    font-weight: 600;
    position: relative;
    padding: 5px 0;
}

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

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

/* Hidden checkbox for mobile menu */
.mobile-menu-checkbox {
    display: none;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 100;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--light);
    border-radius: 2px;
    transition: var(--transition-normal);
}

/* Hamburger to X animation on checked */
.mobile-menu-checkbox:checked + .mobile-menu-btn span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-checkbox:checked + .mobile-menu-btn span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-checkbox:checked + .mobile-menu-btn span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Show nav links when checkbox is checked */
.mobile-menu-checkbox:checked ~ .nav-links {
    display: flex;
}

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

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 20px 80px;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    margin-bottom: 20px;
    text-shadow: 2px 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    padding: 15px 40px;
    background: var(--light);
    color: var(--magenta);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 50px;
    transition: var(--transition-normal);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.hero-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    background: var(--light);
}

.shape-1 {
    width: 400px;
    height: 400px;
    top: -100px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.shape-2 {
    width: 300px;
    height: 300px;
    bottom: -50px;
    left: -50px;
    animation: float 10s ease-in-out infinite 1s;
}

.shape-3 {
    width: 200px;
    height: 200px;
    top: 40%;
    left: 10%;
    animation: float 6s ease-in-out infinite 0.5s;
}

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

.section {
    padding: var(--section-padding);
    position: relative;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    text-align: center;
    margin-bottom: 10px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 60px;
}

/* ========================================
   Playlists Section
   ======================================== */

.playlists-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.playlist-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
}

.playlist-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.playlist-embed {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
}

.playlist-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.playlist-info {
    padding: 20px;
}

.playlist-info h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.playlist-info p {
    opacity: 0.9;
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.playlist-tag {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* ========================================
   Articles Section
   ======================================== */

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.article-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.article-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.article-card:hover .article-image img {
    transform: scale(1.1);
}

.article-category {
    position: absolute;
    top: 15px;
    left: 15px;
    padding: 5px 15px;
    background: var(--magenta);
    color: var(--light);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.article-content {
    padding: 25px;
}

.article-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    line-height: 1.3;
}

.article-content > p {
    opacity: 0.9;
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.article-meta {
    display: flex;
    gap: 15px;
    font-size: 0.85rem;
    opacity: 0.8;
    margin-bottom: 20px;
}

.article-body {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 20px;
    font-size: 0.9rem;
}

.article-body h4 {
    font-size: 1rem;
    margin: 20px 0 10px;
    color: rgba(255, 255, 255, 0.95);
}

.article-body h4:first-child {
    margin-top: 0;
}

.article-body ul {
    margin-left: 20px;
    margin-bottom: 15px;
}

.article-body li {
    list-style: disc;
    margin-bottom: 8px;
    opacity: 0.9;
}

.article-body p {
    margin-bottom: 10px;
    opacity: 0.9;
}

/* ========================================
   Gallery Section
   ======================================== */

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 250px;
    gap: 15px;
}

.gallery-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
}

.gallery-item.large {
    grid-column: span 2;
    grid-row: span 2;
}

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

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

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    transition: var(--transition-normal);
}

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

.gallery-overlay span {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ========================================
   About Section
   ======================================== */

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text .section-title {
    text-align: left;
    margin-bottom: 20px;
}

.about-text .lead {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.about-text p {
    opacity: 0.9;
    margin-bottom: 15px;
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.about-image {
    position: relative;
}

.about-image img {
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.image-accent {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    z-index: -1;
}

/* ========================================
   Newsletter Section
   ======================================== */

.newsletter {
    padding: 80px 0;
}

.newsletter-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.newsletter-content h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.newsletter-content p {
    opacity: 0.8;
    margin-bottom: 30px;
}

.newsletter-form {
    display: flex;
    gap: 15px;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 15px 25px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-family: var(--font-body);
}

.newsletter-form input:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--magenta);
}

.newsletter-form button {
    padding: 15px 30px;
    background: var(--magenta);
    color: var(--light);
    border: none;
    border-radius: 50px;
    font-family: var(--font-heading);
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-normal);
}

.newsletter-form button:hover {
    background: var(--magenta-dark);
    transform: translateY(-2px);
}

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

.footer {
    background: var(--darker);
    color: var(--light);
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-brand .logo {
    margin-bottom: 15px;
}

.footer-brand p {
    opacity: 0.7;
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    opacity: 0.7;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--magenta);
}

.footer-social h4 {
    margin-bottom: 20px;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.social-icon:hover {
    background: var(--magenta);
    transform: translateY(-3px);
}

.social-icon svg {
    width: 20px;
    height: 20px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    opacity: 0.6;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--cyan);
}

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

@media (max-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
        grid-auto-rows: 200px;
    }
    
    .gallery-item.large {
        grid-column: span 2;
        grid-row: span 2;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-image {
        order: -1;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .about-text .section-title {
        text-align: center;
    }
    
    .about-text {
        text-align: center;
    }
    
    .about-stats {
        justify-content: center;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--dark);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: 180px;
    }
    
    .gallery-item.large {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .social-icons {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .about-stats {
        flex-direction: column;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    :root {
        --section-padding: 60px 0;
    }
    
    .hero {
        padding: 100px 15px 60px;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .cta-button {
        padding: 12px 30px;
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
        grid-auto-rows: 200px;
    }
    
    .gallery-item.large {
        grid-column: span 1;
        grid-row: span 1;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .playlists-grid {
        grid-template-columns: 1fr;
    }
}

/* Scroll Reveal Animations - Pure CSS */
.playlist-card,
.article-card,
.gallery-item,
.stat {
    animation: fadeInUp 0.8s ease forwards;
}

.playlist-card:nth-child(1) { animation-delay: 0.1s; }
.playlist-card:nth-child(2) { animation-delay: 0.2s; }
.playlist-card:nth-child(3) { animation-delay: 0.3s; }
.playlist-card:nth-child(4) { animation-delay: 0.4s; }

.article-card:nth-child(1) { animation-delay: 0.1s; }
.article-card:nth-child(2) { animation-delay: 0.2s; }
.article-card:nth-child(3) { animation-delay: 0.3s; }
.article-card:nth-child(4) { animation-delay: 0.4s; }

.gallery-item:nth-child(1) { animation-delay: 0.05s; }
.gallery-item:nth-child(2) { animation-delay: 0.1s; }
.gallery-item:nth-child(3) { animation-delay: 0.15s; }
.gallery-item:nth-child(4) { animation-delay: 0.2s; }
.gallery-item:nth-child(5) { animation-delay: 0.25s; }
.gallery-item:nth-child(6) { animation-delay: 0.3s; }
.gallery-item:nth-child(7) { animation-delay: 0.35s; }
.gallery-item:nth-child(8) { animation-delay: 0.4s; }
.gallery-item:nth-child(9) { animation-delay: 0.45s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Utility Classes
   ======================================== */

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

.mb-0 {
    margin-bottom: 0;
}

.hidden {
    display: none;
}

/* Accessibility */
.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;
}

/* Focus states for accessibility */
a:focus,
button:focus,
input:focus {
    outline: 2px solid var(--cyan);
    outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}