/* ===================================
   CSS Variables & Design Tokens
   =================================== */
:root {
    /* Color Palette */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --dark-gradient: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #4facfe;
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-muted: rgba(255, 255, 255, 0.6);
    
    --bg-dark: #0a0a0f;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.3);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

body {
    font-family: var(--font-primary);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* ===================================
   Animated Background
   =================================== */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    background: var(--dark-gradient);
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #667eea 0%, transparent 70%);
    top: -10%;
    left: -10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #764ba2 0%, transparent 70%);
    bottom: -10%;
    right: -10%;
    animation-delay: 7s;
}

.orb-3 {
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, #4facfe 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 14s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

/* ===================================
   Container & Layout
   =================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

.fade-in-delay-1 {
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 0.2s;
    opacity: 0;
}

.fade-in-delay-2 {
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 0.4s;
    opacity: 0;
}

.fade-in-delay-3 {
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 0.6s;
    opacity: 0;
}

.fade-in-delay-4 {
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 0.8s;
    opacity: 0;
}

.fade-in-delay-5 {
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 1s;
    opacity: 0;
}

.fade-in-delay-6 {
    animation: fadeIn 0.8s ease forwards;
    animation-delay: 1.2s;
    opacity: 0;
}

/* ===================================
   Brand Section
   =================================== */
.brand-section {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.logo-container {
    margin-bottom: var(--spacing-md);
}

.logo-icon {
    width: 100px;
    height: 100px;
    filter: drop-shadow(var(--shadow-glow));
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 0 20px rgba(102, 126, 234, 0.3));
    }
    50% {
        transform: scale(1.05);
        filter: drop-shadow(0 0 40px rgba(102, 126, 234, 0.5));
    }
}

.brand-name {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

/* ===================================
   Content Section
   =================================== */
.content-section {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    max-width: 800px;
}

.main-heading {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    background: linear-gradient(135deg, #ffffff 0%, rgba(255, 255, 255, 0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

/* ===================================
   Countdown Timer
   =================================== */
.countdown-section {
    margin-bottom: var(--spacing-2xl);
    text-align: center;
}

.countdown-label {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
}

.countdown-timer {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.time-unit {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    min-width: 100px;
    transition: all var(--transition-base);
}

.time-unit:hover {
    background: var(--bg-card-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.time-value {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.time-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.time-separator {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 700;
    color: var(--text-muted);
    margin: 0 var(--spacing-xs);
}

/* ===================================
   Newsletter Section
   =================================== */
.newsletter-section {
    margin-bottom: var(--spacing-2xl);
    text-align: center;
    max-width: 600px;
    width: 100%;
}

.newsletter-heading {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.newsletter-description {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.newsletter-form {
    width: 100%;
}

.input-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.email-input {
    flex: 1;
    min-width: 250px;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    font-family: var(--font-primary);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.email-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.2);
    background: rgba(255, 255, 255, 0.08);
}

.email-input::placeholder {
    color: var(--text-muted);
}

.subscribe-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-primary);
    background: var(--primary-gradient);
    color: var(--text-primary);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.subscribe-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.subscribe-btn:hover::before {
    left: 100%;
}

.subscribe-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.subscribe-btn:active {
    transform: translateY(0);
}

.btn-icon {
    font-size: 1.25rem;
    transition: transform var(--transition-base);
}

.subscribe-btn:hover .btn-icon {
    transform: translateX(5px);
}

.form-message {
    min-height: 24px;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-base);
}

.form-message.success {
    color: #4ade80;
}

.form-message.error {
    color: #f87171;
}

/* ===================================
   Features Section
   =================================== */
.features-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
    width: 100%;
    max-width: 1000px;
}

.feature-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.feature-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(102, 126, 234, 0.3);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.feature-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.feature-description {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===================================
   Social Section
   =================================== */
.social-section {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.social-label {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

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

.social-link {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: all var(--transition-base);
    text-decoration: none;
}

.social-link svg {
    width: 24px;
    height: 24px;
}

.social-link:hover {
    background: var(--primary-gradient);
    transform: translateY(-5px) rotate(5deg);
    box-shadow: var(--shadow-glow);
    border-color: transparent;
}

/* ===================================
   Footer
   =================================== */
.footer {
    margin-top: auto;
    padding-top: var(--spacing-xl);
    text-align: center;
}

.footer p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .countdown-timer {
        gap: var(--spacing-xs);
    }
    
    .time-unit {
        min-width: 70px;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .time-separator {
        display: none;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .email-input,
    .subscribe-btn {
        width: 100%;
    }
    
    .features-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .logo-icon {
        width: 80px;
        height: 80px;
    }
    
    .time-value {
        font-size: 1.75rem;
    }
    
    .time-label {
        font-size: 0.75rem;
    }
}