/* www/css/style.css - Claude-inspired Design System */

/* ============================================
   CSS VARIABLES - Light & Dark Theme
   ============================================ */

   :root {
    /* Light Theme Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9f9f9;
    --bg-tertiary: #f3f3f3;
    
    --text-primary: #1a1a1a;
    --text-secondary: #525252;
    --text-tertiary: #737373;
    
    --border-primary: #e5e5e5;
    --border-secondary: #d4d4d4;
    
    --accent-primary: #2563eb;
    --accent-hover: #1d4ed8;
    
    /* Danger/Error colors */
    --danger-primary: #dc3545;
    --danger-hover: #c82333;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    /* Spacing */
    --container-max: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #171717;
    --bg-tertiary: #262626;
    
    --text-primary: #f5f5f5;
    --text-secondary: #a3a3a3;
    --text-tertiary: #737373;
    
    --border-primary: #262626;
    --border-secondary: #404040;
    
    --accent-primary: #3b82f6;
    --accent-hover: #60a5fa;
    
    --danger-primary: #dc3545;
    --danger-hover: #bb2d3b;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

/* ============================================
   BASE STYLES
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-base), color var(--transition-base);
    padding-top: 0;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
    cursor: pointer;
}

a:hover {
    color: var(--accent-hover);
}


.disclaimer {
    display: flex;justify-content: center;align-items: center;text-align: center;font-size: 0.7rem;color: #ccc;padding-top: 5px;width: 100%;
}
.disclaimer-text {
    border-top: 1px solid var(--border-primary);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn-primary,
.btn-secondary,
.btn-danger,
.btn-large {
    display: inline-block;
    padding: 0.625rem 1.5rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
}

.btn-secondary:hover {
    background-color: var(--bg-secondary);
    border-color: var(--border-secondary);
    color: var(--text-primary);
}

.btn-danger {
    background-color: var(--danger-primary);
    color: white;
}

.btn-danger:hover {
    background-color: var(--danger-hover);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-large {
    padding: 0.875rem 2rem;
    font-size: var(--font-size-base);
}

/* ============================================
   HEADER
   ============================================ */

.header {
    padding: 0;
    border-bottom: 1px solid var(--border-primary);
    background-color: var(--bg-primary);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: none;
    height: 60px;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    height: 100%;
}

.header-controls {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
    height: 36px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    min-width: 0;
    line-height: 1;
    height: 36px;
}

.logo svg {
    color: var(--accent-primary);
    flex-shrink: 0;
    display: block;
}

.logo span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1;
    display: flex;
    align-items: center;
}

/* ============================================
   THEME TOGGLE & LOGIN BUTTON
   ============================================ */

.theme-toggle,
.login-button {
    position: relative;
    width: 36px;
    height: 36px;
    min-width: 36px;
    max-width: 36px;
    min-height: 36px;
    max-height: 36px;
    border-radius: 50%;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
    flex-shrink: 0;
    padding: 0;
    line-height: 0;
}

.login-button {
    text-decoration: none;
    color: var(--text-primary);
}

.theme-toggle:hover,
.login-button:hover {
    background-color: var(--bg-tertiary);
    transform: scale(1.05);
}

.login-button:hover {
    color: var(--accent-primary);
}

.theme-toggle .sun-icon,
.theme-toggle .moon-icon {
    display: block;
    color: var(--text-primary);
    flex-shrink: 0;
    line-height: 0;
}

.login-button svg {
    display: block;
    color: var(--text-primary);
    flex-shrink: 0;
    line-height: 0;
}

.theme-toggle .sun-icon {
    display: block;
}

.theme-toggle .moon-icon {
    display: none;
}

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

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

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    padding: var(--spacing-2xl) 0;
    text-align: center;
    background-color: var(--bg-primary);
}

.hero2 {
    padding: var(--spacing-sm) 0;
    text-align: center;
    background-color: var(--bg-primary);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.5;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-2xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-primary);
}

[data-theme="dark"] .hero2 {
    background-color: var(--bg-primary);
}
[data-theme="dark"] body {
    background-color: var(--bg-primary);
}
.stat {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

/* ============================================
   FEATURES SECTION
   ============================================ */

.features {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-secondary);
}

.features h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background-color: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid var(--border-primary);
    transition: all var(--transition-base);
    cursor: default;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background-color: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--accent-primary);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    margin: 0;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
}

.footer-section a {
    display: block;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-fast);
    cursor: pointer;
}

.footer-section a:hover {
    color: var(--text-primary);
}

.footer-section p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin: 0;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-primary);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    margin: 0;
}

/* ============================================
   LOADING SPINNER
   ============================================ */

.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.3s ease;
}

.loading-spinner.hidden {
    opacity: 0;
    pointer-events: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(66, 133, 244, 0.2);
    border-top-color: #4285f4;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   COOKIE BANNER
   ============================================ */

.cookie-banner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(3px);
    z-index: 10000;
    display: flex;
    align-items: flex-end;
}

.cookie-banner.hidden {
    display: none;
}

.cookie-content {
    width: 100%;
    background: var(--bg-primary);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    padding: 20px 0;
}

.cookie-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.cookie-inner p {
    margin: 0;
    flex: 1;
    font-size: 0.95rem;
    color: var(--text-secondary);
    text-align: left;
}

.cookie-inner button {
    flex-shrink: 0;
    white-space: nowrap;
}

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

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
    }
    
    .header {
        height: 56px;
    }
    
    .logo {
        font-size: 1rem;
        height: 32px;
    }
    
    .logo svg {
        width: 28px;
        height: 28px;
    }
    
    .header-controls {
        height: 32px;
    }
    
    .hero h1 {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .cookie-inner {
        flex-direction: column;
        align-items: stretch;
        gap: 15px;
    }
    
    .cookie-inner p {
        text-align: center;
    }
    
    .cookie-inner button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .header {
        height: 52px;
    }
    
    .logo {
        height: 28px;
    }
    
    .logo span {
        font-size: 0.875rem;
    }
    
    .logo svg {
        width: 24px;
        height: 24px;
    }
    
    .header-controls {
        height: 28px;
        gap: 0.5rem;
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
}

@media (max-width: 360px) {
    .logo span {
        display: none;
    }
}