/* Freeze2k Mail - Professional Email Service */

:root {
    /* TRON Color Palette */
    --tron-blue: #00d4ff;
    --tron-cyan: #00ffff;
    --tron-dark: #001122;
    --tron-darker: #000911;
    --dark-bg: #000911;
    --light-bg: rgba(0, 212, 255, 0.02);
    --card-bg: rgba(0, 212, 255, 0.04);
    --text-primary: rgba(0, 255, 255, 0.9);
    --text-secondary: rgba(0, 212, 255, 0.6);
    --border-color: rgba(0, 212, 255, 0.2);
    --glass-border: rgba(0, 212, 255, 0.3);
    --success-color: #00ff88;
    --error-color: #ff4444;
    --warning-color: #ffaa00;
    
    /* TRON Gradients */
    --tron-gradient: linear-gradient(135deg, #000611 0%, #000911 50%, #001122 100%);
    --ice-gradient: linear-gradient(135deg, rgba(0, 212, 255, 0.8) 0%, rgba(0, 255, 255, 0.6) 50%, rgba(0, 212, 255, 0.4) 100%);
    --glow-cyan: 0 0 8px rgba(0, 255, 255, 0.6), 0 0 15px rgba(0, 212, 255, 0.4);
    --glow-blue: 0 0 15px rgba(0, 212, 255, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--tron-gradient);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 255, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 70%, rgba(0, 212, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: rgba(0, 212, 255, 0.05);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 18px;
    text-decoration: none;
    color: var(--tron-cyan);
}

.logo-icon {
    content: "❄";
    font-size: 32px;
    color: var(--tron-cyan);
    text-shadow: var(--glow-cyan);
    filter: drop-shadow(0 0 15px rgba(0, 255, 255, 0.8));
    animation: logoRotate 8s ease-in-out infinite;
}

.logo-text {
    font-size: 28px;
    font-weight: 300;
    letter-spacing: 4px;
    text-transform: uppercase;
    background: var(--ice-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: var(--glow-cyan);
}

@keyframes logoRotate {
    0%, 100% { 
        transform: rotate(0deg);
        filter: drop-shadow(0 0 15px rgba(0, 255, 255, 0.7));
    }
    50% { 
        transform: rotate(180deg);
        filter: drop-shadow(0 0 25px rgba(0, 255, 255, 0.9));
    }
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--tron-cyan);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    text-shadow: 0 0 5px rgba(0, 255, 255, 0.3);
}

.nav-links a:hover {
    color: var(--tron-blue);
    text-shadow: var(--glow-cyan);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    text-align: center;
    color: var(--text-primary);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.hero .subtitle {
    font-size: 1.25rem;
    opacity: 0.95;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Forms */
.form-container {
    background: rgba(0, 17, 34, 0.9);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.1);
    max-width: 480px;
    margin: 0 auto;
    backdrop-filter: blur(20px);
}

.form-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-subtitle {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s;
    background: rgba(0, 17, 34, 0.7);
    color: var(--tron-cyan);
}

.form-input:focus {
    outline: none;
    border-color: var(--tron-cyan);
    background: rgba(0, 212, 255, 0.05);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.2);
}

.form-input.error {
    border-color: var(--error-color);
}

.form-helper {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.form-error {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 255, 255, 0.1));
    color: var(--tron-cyan);
    border: 1px solid var(--tron-cyan);
    box-shadow: 0 4px 12px rgba(0, 212, 255, 0.3);
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
}

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
}

.btn-secondary {
    background: var(--light-bg);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--tron-cyan);
    color: var(--tron-cyan);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.3);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* Features Grid */
.features {
    padding: 80px 0;
    background: var(--tron-gradient);
    border-top: 1px solid var(--glass-border);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    padding: 2rem;
    border-radius: 16px;
    background: rgba(0, 17, 34, 0.8);
    border: 1px solid var(--glass-border);
    text-align: center;
    transition: all 0.3s;
    backdrop-filter: blur(10px);
}

.feature-card:hover {
    transform: translateY(-4px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    background: var(--ice-gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-description {
    color: var(--text-secondary);
}

/* Alert Messages */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

/* Footer */
.footer {
    background: var(--dark-bg);
    color: var(--text-primary);
    padding: 3rem 0;
    margin-top: 80px;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--tron-cyan);
    text-shadow: var(--glow-cyan);
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

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

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .form-container {
        padding: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none;
    }
}