/* ===== CSS VARIABLES ===== */
:root {
    /* Night Blue Theme */
    --primary: #00D9FF;
    --primary-dark: #00A8CC;
    --primary-glow: rgba(0, 217, 255, 0.3);
    --secondary: #6366F1;
    --accent: #25D366;
    --accent-dark: #128C7E;
    
    /* Dark Blue Night Colors */
    --bg-primary: #0A0E27;
    --bg-secondary: #0F172A;
    --bg-card: #1E293B;
    --bg-card-hover: #2D3B52;
    
    /* Text Colors */
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0A0E27 0%, #1E293B 50%, #312E81 100%);
    --gradient-hero: linear-gradient(135deg, #0F172A 0%, #1E3A8A 50%, #4C1D95 100%);
    --gradient-card: linear-gradient(135deg, rgba(30, 41, 59, 0.9) 0%, rgba(49, 46, 129, 0.3) 100%);
    
    /* Shadows & Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--primary-glow);
    --shadow-glow-strong: 0 0 40px var(--primary-glow);
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-sm);
}

/* ===== SCROLL PROGRESS BAR ===== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    z-index: 10000;
    transition: width 0.1s ease;
}

/* ===== LOADING SCREEN ===== */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loading.active {
    display: flex;
}

.loading-content {
    text-align: center;
    animation: fadeInUp 0.6s ease;
}

.loading-logo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin-bottom: var(--space-md);
    border: 3px solid var(--primary);
    box-shadow: var(--shadow-glow-strong);
    animation: rotate 2s linear infinite;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(0, 217, 255, 0.2);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-md);
}

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

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading p {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
}

/* ===== HEADER ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 217, 255, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

header.scrolled {
    background: rgba(10, 14, 39, 0.95);
    box-shadow: var(--shadow-md);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-glow);
    transition: var(--transition);
}

.logo-img:hover {
    transform: rotate(360deg) scale(1.1);
}

.logo h1 {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.logo-highlight {
    color: var(--primary);
    text-shadow: 0 0 10px var(--primary-glow);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.clock {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: rgba(30, 41, 59, 0.6);
    padding: 8px 14px;
    border-radius: 20px;
    font-weight: 500;
    border: 1px solid rgba(0, 217, 255, 0.2);
}

.hamburger {
    background: none;
    border: 1px solid rgba(0, 217, 255, 0.3);
    font-size: 1.2rem;
    color: var(--primary);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hamburger:hover {
    background: rgba(0, 217, 255, 0.1);
    box-shadow: var(--shadow-glow);
}

.nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(10, 14, 39, 0.98);
    backdrop-filter: blur(20px);
    list-style: none;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    transition: var(--transition);
    z-index: 999;
    border-bottom: 1px solid rgba(0, 217, 255, 0.2);
}

.nav-links.active {
    transform: translateY(0);
    opacity: 1;
}

.nav-links a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: var(--space-md) var(--space-lg);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border-bottom: 1px solid rgba(0, 217, 255, 0.1);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
    background: rgba(0, 217, 255, 0.1);
    padding-left: calc(var(--space-lg) + 10px);
}

/* ===== HERO SECTION ===== */
.hero {
    padding: calc(70px + var(--space-xl)) 0 var(--space-xl);
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

/* Particles Background */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.particle {
    position: absolute;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: float linear infinite;
}

@keyframes float {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        transform: translateY(-100vh) scale(1);
        opacity: 0;
    }
}

/* Animated Background Gradient */
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.1) 0%, transparent 50%);
    animation: rotateGradient 20s linear infinite;
    z-index: 0;
}

@keyframes rotateGradient {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    width: 100%;
    animation: fadeInUp 0.8s ease;
}

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

.hero-badge {
    margin-bottom: var(--space-lg);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.badge {
    display: inline-block;
    background: rgba(239, 68, 68, 0.2);
    color: #FCA5A5;
    padding: 10px 24px;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    border: 1px solid rgba(239, 68, 68, 0.3);
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}

.hero-title {
    font-size: 2.2rem;
    margin-bottom: var(--space-md);
    line-height: 1.2;
    font-weight: 300;
}

.gradient-text {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    font-size: 2.8rem;
    font-weight: 900;
    margin-bottom: 12px;
    letter-spacing: -1px;
    text-shadow: 0 0 40px var(--primary-glow);
    min-height: 1.2em;
}

.hero-subtitle {
    font-size: 1rem;
    margin-bottom: var(--space-xl);
    color: var(--text-secondary);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* ===== PRODUCT SELECTOR ===== */
.product-selector {
    background: rgba(30, 41, 59, 0.4);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    margin: var(--space-lg) auto;
    border: 1px solid rgba(0, 217, 255, 0.2);
    max-width: 900px;
    box-shadow: var(--shadow-lg);
}

.selector-title {
    font-size: 1.3rem;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
    font-weight: 700;
    text-align: center;
}

.selector-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
}

.selector-btn {
    background: rgba(30, 41, 59, 0.6);
    border: 2px solid rgba(0, 217, 255, 0.3);
    color: var(--text-primary);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    min-height: 110px;
    position: relative;
    overflow: hidden;
}

.selector-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(0, 217, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.selector-btn:hover::before {
    width: 300px;
    height: 300px;
}

.selector-btn:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow-strong);
}

.selector-btn.active {
    background: rgba(0, 217, 255, 0.2);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow-strong);
}

.selector-btn i {
    font-size: 1.8rem;
    margin-bottom: 4px;
    position: relative;
    z-index: 1;
}

.selector-btn span {
    position: relative;
    z-index: 1;
}

.selector-btn small {
    font-size: 0.75rem;
    opacity: 0.8;
    margin-top: 4px;
    position: relative;
    z-index: 1;
}

/* ===== HERO STATS ===== */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-xl);
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    min-width: 120px;
    border: 1px solid rgba(0, 217, 255, 0.2);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
    border-color: var(--primary);
}

.stat-item i {
    font-size: 1.8rem;
    color: var(--primary);
}

.stat-number {
    display: block;
    font-size: 1.4rem;
    font-weight: 800;
    line-height: 1;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ===== PRODUCT LISTS ===== */
.product-lists-container {
    display: none;
    padding: var(--space-xl) 0;
    background: var(--bg-secondary);
    position: relative;
    min-height: 500px;
}

.product-lists-container.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.section-title {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    font-weight: 800;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    font-size: 0.95rem;
}

/* ===== PRODUCT GRID (ALL VISIBLE) ===== */
.product-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.product-card {
    background: var(--gradient-card);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    border: 1px solid rgba(0, 217, 255, 0.2);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.5s;
}

.product-card:hover::before {
    opacity: 1;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow-strong);
    border-color: var(--primary);
}

.product-card.popular::after {
    content: '🔥 POPULAR';
    position: absolute;
    top: 15px;
    right: -30px;
    background: linear-gradient(135deg, #EF4444, #DC2626);
    color: white;
    padding: 5px 35px;
    transform: rotate(45deg);
    font-size: 0.7rem;
    font-weight: 700;
    box-shadow: 0 2px 10px rgba(239, 68, 68, 0.5);
}

.product-header {
    text-align: center;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid rgba(0, 217, 255, 0.2);
}

.product-header h3 {
    font-size: 1.2rem;
    margin-bottom: var(--space-sm);
    font-weight: 700;
    color: var(--text-primary);
}

.price {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--primary);
    margin: var(--space-sm) 0;
    text-shadow: 0 0 20px var(--primary-glow);
}

.price-period {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.product-features h4 {
    margin-bottom: var(--space-sm);
    color: var(--primary);
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.feature-list {
    list-style: none;
    margin-bottom: var(--space-md);
}

.feature-list li {
    margin-bottom: var(--space-xs);
    padding-left: var(--space-md);
    position: relative;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

.product-note {
    background: rgba(37, 211, 102, 0.1);
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    margin: var(--space-md) 0;
    font-size: 0.85rem;
    color: var(--accent);
    border-left: 3px solid var(--accent);
}

/* ===== ORDER BUTTON ===== */
.btn-order {
    width: 100%;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    border: none;
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.4s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
}

.btn-order::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-order:active::before {
    width: 300px;
    height: 300px;
}

.btn-order:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.6);
}

.btn-order i {
    font-size: 1.2rem;
    position: relative;
    z-index: 1;
}

.btn-order span {
    position: relative;
    z-index: 1;
}

/* ===== ADDITIONAL SECTIONS ===== */
.product-terms,
.product-features-list,
.product-security,
.product-benefits,
.product-info {
    background: var(--gradient-card);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    border: 1px solid rgba(0, 217, 255, 0.2);
    animation: fadeInUp 0.6s ease;
}

.product-terms h3,
.product-features-list h3,
.product-security h3,
.product-benefits h3,
.product-info h3 {
    color: var(--primary);
    margin-bottom: var(--space-md);
    font-size: 1.2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.product-terms ul,
.product-security ul,
.product-info ul {
    list-style: none;
    padding-left: 0;
}

.product-terms li,
.product-security li,
.product-info li {
    padding: var(--space-sm);
    margin-bottom: var(--space-xs);
    color: var(--text-secondary);
    border-left: 3px solid var(--primary);
    padding-left: var(--space-md);
    background: rgba(0, 217, 255, 0.05);
    border-radius: var(--radius-sm);
}

.features-grid,
.benefits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-sm);
}

.feature-item,
.benefit-item {
    padding: var(--space-sm);
    background: rgba(0, 217, 255, 0.05);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    border: 1px solid rgba(0, 217, 255, 0.1);
    transition: var(--transition);
}

.feature-item:hover,
.benefit-item:hover {
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--primary);
    transform: translateX(5px);
}

/* ===== CONTACT SECTION ===== */
.contact {
    padding: var(--space-xl) 0;
    background: var(--bg-primary);
}

.contact-card {
    background: var(--gradient-card);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    border: 1px solid rgba(0, 217, 255, 0.2);
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease;
}

.contact-icon {
    font-size: 3.5rem;
    color: var(--accent);
    margin-bottom: var(--space-md);
    animation: pulse 2s infinite;
}

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

.contact-card h3 {
    font-size: 1.8rem;
    margin-bottom: var(--space-sm);
    font-weight: 700;
    color: var(--text-primary);
}

.contact-card > p {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.btn-whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.4s ease;
    margin-bottom: var(--space-lg);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
    position: relative;
    overflow: hidden;
}

.btn-whatsapp::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-whatsapp:hover::before {
    width: 300px;
    height: 300px;
}

.btn-whatsapp:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.6);
}

.btn-whatsapp i {
    font-size: 1.3rem;
    position: relative;
    z-index: 1;
}

.contact-info {
    margin-top: var(--space-xl);
    text-align: left;
}

.contact-info h4 {
    color: var(--primary);
    margin-bottom: var(--space-sm);
    margin-top: var(--space-lg);
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.contact-info h4:first-child {
    margin-top: 0;
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    padding-left: var(--space-lg);
}

.payment-methods {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    padding-left: var(--space-lg);
}

.payment-method {
    background: rgba(0, 217, 255, 0.1);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(0, 217, 255, 0.3);
}

/* ===== FOOTER ===== */
footer {
    background: var(--gradient-primary);
    color: var(--text-primary);
    padding: var(--space-xl) 0 var(--space-md);
    border-top: 1px solid rgba(0, 217, 255, 0.2);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    text-align: center;
    margin-bottom: var(--space-lg);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.footer-logo {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-glow);
}

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: var(--space-xs);
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links,
.footer-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.footer-links h4,
.footer-info h4 {
    color: var(--primary);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: 5px;
}

.footer-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.footer-info i {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(0, 217, 255, 0.1);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== FLOATING BUTTONS ===== */
.theme-toggle,
.back-to-top {
    position: fixed;
    right: 20px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 999;
}

.theme-toggle {
    bottom: 90px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
}

.theme-toggle:hover {
    transform: scale(1.1) rotate(180deg);
    box-shadow: var(--shadow-glow-strong);
}

.theme-toggle i {
    position: absolute;
    transition: var(--transition);
}

.theme-toggle .fa-sun {
    opacity: 0;
    transform: rotate(90deg);
}

[data-theme="light"] .theme-toggle .fa-moon {
    opacity: 0;
    transform: rotate(90deg);
}

[data-theme="light"] .theme-toggle .fa-sun {
    opacity: 1;
    transform: rotate(0);
}

.back-to-top {
    bottom: 30px;
    width: 45px;
    height: 45px;
    background: rgba(30, 41, 59, 0.9);
    color: var(--primary);
    font-size: 1.1rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(0, 217, 255, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary);
    color: var(--bg-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

/* ===== TOAST NOTIFICATION ===== */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--gradient-card);
    backdrop-filter: blur(20px);
    color: var(--text-primary);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0, 217, 255, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    z-index: 9998;
    font-weight: 600;
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.toast i {
    color: var(--accent);
    font-size: 1.3rem;
}

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

/* Tablet */
@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .gradient-text {
        font-size: 3.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .selector-buttons {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-md);
    }
    
    .selector-btn {
        padding: var(--space-lg) var(--space-sm);
        min-height: 120px;
    }
    
    .hero-stats {
        gap: var(--space-xl);
    }
    
    .stat-item {
        min-width: 140px;
    }
    
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg);
    }
    
    .features-grid,
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
        text-align: left;
    }
    
    .footer-brand {
        align-items: flex-start;
    }
    
    .footer-info p {
        justify-content: flex-start;
    }
    
    .nav-links {
        position: static;
        flex-direction: row;
        transform: none;
        opacity: 1;
        box-shadow: none;
        background: none;
        border: none;
        width: auto;
        gap: var(--space-md);
    }
    
    .nav-links a {
        padding: 8px 0;
        border: none;
    }
    
    .nav-links a:hover,
    .nav-links a.active {
        background: none;
        padding-left: 0;
    }
    
    .hamburger {
        display: none;
    }
    
    .clock {
        font-size: 0.9rem;
        padding: 10px 16px;
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .container {
        padding: 0 var(--space-lg);
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .gradient-text {
        font-size: 3.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
        max-width: 700px;
    }
    
    .product-selector {
        max-width: 900px;
        padding: var(--space-xl);
    }
    
    .selector-btn {
        padding: var(--space-xl) var(--space-md);
        min-height: 140px;
    }
    
    .selector-btn i {
        font-size: 2.2rem;
    }
    
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .contact-card {
        padding: calc(var(--space-xl) * 1.5);
    }
    
    .theme-toggle {
        width: 55px;
        height: 55px;
        font-size: 1.4rem;
    }
    
    .back-to-top {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}

/* Large Desktop */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
        padding: 0;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

/* Small Mobile Adjustments */
@media (max-width: 375px) {
    .gradient-text {
        font-size: 2.4rem;
    }
    
    .hero-title {
        font-size: 1.9rem;
    }
    
    .selector-btn {
        min-height: 100px;
        padding: var(--space-sm);
    }
    
    .selector-btn i {
        font-size: 1.5rem;
    }
    
    .stat-item {
        min-width: 100px;
        padding: var(--space-sm);
    }
    
    .theme-toggle {
        width: 45px;
        height: 45px;
        bottom: 80px;
    }
    
    .back-to-top {
        width: 40px;
        height: 40px;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-dark), var(--secondary));
}

/* ===== LIGHT THEME (Optional) ===== */
[data-theme="light"] {
    --bg-primary: #F8FAFC;
    --bg-secondary: #F1F5F9;
    --bg-card: #FFFFFF;
    --bg-card-hover: #F8FAFC;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --gradient-hero: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 50%, #BFDBFE 100%);
    --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(241, 245, 249, 0.6) 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }