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

:root {
    --primary-color: #8B5CF6;
    --primary-hover: #7C3AED;
    --primary-light: rgba(139, 92, 246, 0.15);
    --secondary-color: #10B981;
    --secondary-hover: #059669;
    --error-color: #F87171;
    --error-light: rgba(248, 113, 113, 0.15);
    --accent-color: #06B6D4;
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-light: #64748B;
    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --bg-tertiary: #334155;
    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(139, 92, 246, 0.15);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --transition: all 0.3s ease-in-out;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    background-image: 
        radial-gradient(ellipse at 20% 20%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(6, 182, 212, 0.06) 0%, transparent 50%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--primary-color);
}

/* Beta Banner */
.beta-banner {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
    border: 1px solid var(--primary-color);
    color: var(--text-primary);
    padding: 14px 24px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 24px 0 32px;
    font-size: 0.95rem;
    backdrop-filter: blur(10px);
}

.beta-banner strong {
    color: var(--primary-color);
}

.banner-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--primary-color);
}

/* Main Content */
.main {
    flex: 1;
    padding-bottom: 48px;
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 64px;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.hero-content .highlight {
    color: var(--primary-color); /* Fallback for browsers that don't support background-clip */
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 500px;
}

.hero-illustration {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-illustration svg {
    width: 100%;
    max-width: 400px;
    height: auto;
}

/* Login Section */
.login-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-bottom: 64px;
}

.login-card,
.download-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    padding: 32px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.login-card:hover,
.download-card:hover {
    box-shadow: var(--shadow-glow);
    border-color: rgba(139, 92, 246, 0.3);
}

.login-header,
.download-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.login-header h2,
.download-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.login-icon,
.download-icon {
    width: 32px;
    height: 32px;
    color: var(--primary-color);
}

.download-icon {
    color: var(--secondary-color);
}

/* Login Form */
.login-form {
    margin-bottom: 20px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    width: 100%;
}

.btn svg {
    width: 20px;
    height: 20px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, #6D28D9 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-hover) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--secondary-hover) 0%, #047857 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
}

/* Login Error */
.login-error {
    background: var(--error-light);
    border: 1px solid var(--error-color);
    border-radius: var(--radius-lg);
    padding: 16px;
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    animation: slideIn 0.3s ease-out;
}

.login-error svg {
    width: 24px;
    height: 24px;
    color: var(--error-color);
    flex-shrink: 0;
    margin-top: 2px;
}

.error-content strong {
    display: block;
    color: var(--error-color);
    margin-bottom: 4px;
}

.error-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.hidden {
    display: none !important;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.shake {
    animation: shake 0.5s ease-in-out;
}

/* Login Info */
.login-info {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 12px 16px;
    background: var(--primary-light);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.login-info svg {
    width: 18px;
    height: 18px;
    color: var(--primary-color);
    flex-shrink: 0;
}

/* Download Card */
.download-description {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.download-note {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 16px;
}

.download-note svg {
    width: 16px;
    height: 16px;
    color: var(--text-secondary);
}

/* Features Section */
.features {
    text-align: center;
    margin-bottom: 48px;
}

.features h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 48px;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    padding: 32px 24px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(139, 92, 246, 0.3);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-light);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    border: 1px solid rgba(139, 92, 246, 0.2);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    color: var(--primary-color);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Footer */
.footer {
    padding: 32px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

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

.footer-domain {
    color: var(--primary-color);
    font-weight: 500;
    margin-top: 8px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-description {
        margin: 0 auto;
    }

    .hero-illustration {
        order: -1;
    }

    .login-section {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 16px;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .beta-banner {
        flex-direction: column;
        text-align: center;
    }

    .login-card,
    .download-card {
        padding: 24px;
    }
}