/* ============================================
   Website Under Maintenance - Main Stylesheet
   ============================================ */

/* CSS Variables for Theme Colors */
:root {
    --primary-blue: #2563eb;
    --accent-blue: #3b82f6;
    --background-white: #ffffff;
    --neutral-gray: #f3f4f6;
    --text-gray: #1f2937;
    --text-light: #6b7280;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --error-color: #ef4444;
    
    /* Dark Mode Colors */
    --dark-bg: #0f172a;
    --dark-surface: #1e293b;
    --dark-text: #e2e8f0;
    --dark-text-light: #94a3b8;
    --dark-border: #334155;
}

/* Dark Mode */
[data-theme="dark"] {
    --background-white: var(--dark-bg);
    --neutral-gray: var(--dark-surface);
    --text-gray: var(--dark-text);
    --text-light: var(--dark-text-light);
    --border-color: var(--dark-border);
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background-white);
    color: var(--text-gray);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--primary-blue);
    color: white;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    z-index: 10000;
    border-radius: 0 0 4px 0;
    opacity: 0;
    pointer-events: none;
}

.skip-link:focus {
    top: 0;
    opacity: 1;
    pointer-events: auto;
}

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--background-white);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-spinner {
    position: relative;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--neutral-gray);
    border-top-color: var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Container */
.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    right: 0;
    padding: 2rem;
    z-index: 1000;
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--neutral-gray);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-gray);
}

.theme-toggle:hover {
    background: var(--primary-blue);
    color: white;
    transform: scale(1.1);
    border-color: var(--primary-blue);
}

.theme-toggle:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

.theme-icon {
    width: 24px;
    height: 24px;
    transition: transform 0.3s ease;
}

.moon-icon {
    display: none;
}

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

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

/* Main Content */
.main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    min-height: calc(100vh - 80px);
}

/* Hero Section */
.hero {
    text-align: center;
    max-width: 800px;
    width: 100%;
    padding: 0.5rem 0;
}

/* Illustration */
.illustration-wrapper {
    margin-bottom: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.maintenance-illustration {
    width: 100%;
    max-width: 280px;
    height: auto;
    color: var(--primary-blue);
    animation: float 3s ease-in-out infinite;
    will-change: transform;
    display: block;
    visibility: visible;
    opacity: 1;
}

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

.illustration-bg {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.1;
    }
    50% {
        opacity: 0.2;
    }
}

.server-tower {
    animation: server-pulse 3s ease-in-out infinite;
}

@keyframes server-pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.85;
    }
}

/* Typography */
.headline {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-gray);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.subtext {
    font-size: clamp(0.9rem, 1.8vw, 1.1rem);
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-weight: 400;
    line-height: 1.4;
}

/* Fade-in Animations */
.fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
    opacity: 0;
}

.fade-in-up:nth-child(1) {
    animation-delay: 0.1s;
}

.fade-in-up:nth-child(2) {
    animation-delay: 0.2s;
}

.fade-in-up:nth-child(3) {
    animation-delay: 0.3s;
}

.fade-in-up:nth-child(4) {
    animation-delay: 0.4s;
}

.fade-in-up:nth-child(5) {
    animation-delay: 0.5s;
}

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

/* Countdown Timer */
.countdown-container {
    margin: 1.5rem 0;
}

.countdown-timer {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
}

.countdown-number {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--primary-blue);
    display: block;
    transition: all 0.3s ease;
    line-height: 1;
    margin-bottom: 0.25rem;
    will-change: transform, opacity;
}

.countdown-number.changed {
    animation: numberChange 0.5s ease;
}

@keyframes numberChange {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.countdown-label {
    font-size: clamp(0.875rem, 1.5vw, 1rem);
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.countdown-separator {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--primary-blue);
    margin: 0 0.25rem;
}

/* Form Container */
.form-container {
    margin: 1.5rem 0;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.notify-form {
    width: 100%;
}

.form-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.email-input {
    flex: 1;
    min-width: 200px;
    padding: 1rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--background-white);
    color: var(--text-gray);
    transition: all 0.3s ease;
    outline: none;
}

.email-input:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.submit-btn {
    padding: 1rem 2rem;
    background-color: var(--primary-blue);
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    font-family: inherit;
}

.submit-btn:hover {
    background-color: var(--accent-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

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

.submit-btn:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.error-message,
.success-message {
    margin-top: 0.75rem;
    font-size: 0.875rem;
    text-align: center;
    padding: 0.5rem;
    border-radius: 8px;
    display: none;
}

.error-message.active {
    display: block;
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

.success-message.active {
    display: block;
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

/* Social Media Icons */
.social-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.social-link {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--neutral-gray);
    border-radius: 50%;
    color: var(--text-gray);
    transition: all 0.3s ease;
    text-decoration: none;
}

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

.social-link:hover {
    background-color: var(--primary-blue);
    color: white;
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.social-link:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Footer */
.footer {
    text-align: center;
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--neutral-gray);
    margin-top: auto;
}

.footer-text {
    font-size: 0.875rem;
    color: var(--text-light);
    margin: 0.5rem 0;
}

.footer-design {
    margin-top: 0.75rem;
}

.footer-link {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--accent-blue);
    text-decoration: underline;
}

.footer-link:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        padding: 1.5rem;
    }
    
    .theme-toggle {
        width: 45px;
        height: 45px;
    }
    
    .main {
        padding: 1rem;
    }
    
    .hero {
        padding: 1rem 0;
    }
    
    .illustration-wrapper {
        margin-bottom: 0.75rem;
    }
    
    .maintenance-illustration {
        max-width: 220px;
    }
    
    .countdown-container {
        margin: 1rem 0;
    }
    
    .form-container {
        margin: 1rem 0;
    }
    
    .social-container {
        margin-top: 1rem;
    }
    
    .countdown-timer {
        gap: 0.5rem;
    }
    
    .countdown-item {
        min-width: 60px;
    }
    
    .countdown-separator {
        margin: 0 0.25rem;
    }
    
    .form-group {
        flex-direction: column;
    }
    
    .email-input,
    .submit-btn {
        width: 100%;
    }
    
    .social-container {
        gap: 1rem;
    }
    
    .social-link {
        width: 40px;
        height: 40px;
    }
    
    .social-link svg {
        width: 20px;
        height: 20px;
    }
    .countdown-container {
        margin: 1.75rem 0;
    }
}

@media (max-width: 480px) {
    .headline {
        font-size: 1.75rem;
    }
    
    .subtext {
        font-size: 0.95rem;
    }
    
    .countdown-number {
        font-size: 2rem;
    }
    
    .countdown-separator {
        font-size: 2rem;
    }
    
    .countdown-label {
        font-size: 0.75rem;
    }
}

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

/* Print Styles */
@media print {
    .preloader,
    .theme-toggle,
    .social-container {
        display: none;
    }
}