/* Podlovin.ai - Main Stylesheet */
/* All pages use this single CSS file */

/* ============================================
   CSS Variables - Change these to update site-wide
   ============================================ */
:root {
    /* Colors */
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fa;
    --color-bg-dark: #1a1a2e;
    --color-text: #1a1a1a;
    --color-text-light: #6c757d;
    --color-text-inverse: #ffffff;

    /* Brand colors */
    --color-primary: #6366f1;       /* Indigo - main brand */
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --color-accent: #10b981;        /* Emerald - CTAs, success */
    --color-accent-dark: #059669;

    /* UI colors */
    --color-border: rgba(0, 0, 0, 0.1);
    --color-border-light: rgba(0, 0, 0, 0.05);
    --color-shadow: rgba(0, 0, 0, 0.1);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-2xl: 8rem;

    /* Layout */
    --max-width: 1200px;
    --header-height: 72px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

/* ============================================
   Dark Mode (Auto-detect system preference)
   ============================================ */
@media (prefers-color-scheme: dark) {
    :root {
        /* Colors - Dark mode overrides */
        --color-bg: #0f0f1a;
        --color-bg-alt: #1a1a2e;
        --color-bg-dark: #0a0a12;
        --color-text: #e2e8f0;
        --color-text-light: #94a3b8;
        --color-text-inverse: #0f0f1a;

        /* Brand colors - slightly brighter for dark bg */
        --color-primary: #818cf8;
        --color-primary-dark: #6366f1;
        --color-primary-light: #a5b4fc;
        --color-accent: #34d399;
        --color-accent-dark: #10b981;

        /* UI colors */
        --color-border: rgba(255, 255, 255, 0.1);
        --color-border-light: rgba(255, 255, 255, 0.05);
        --color-shadow: rgba(0, 0, 0, 0.3);
    }

    /* Header - dark glass effect */
    .site-header {
        background: rgba(15, 15, 26, 0.95);
        border-bottom-color: var(--color-border);
    }

    /* Feature cards */
    .feature-card {
        background: var(--color-bg-alt);
        border-color: var(--color-border);
    }

    .feature-card:hover {
        border-color: var(--color-primary);
    }

    /* Code blocks - already dark, just ensure contrast */
    .code-block {
        background: #0a0a12;
        border: 1px solid var(--color-border);
    }

    /* Form inputs */
    .form-input,
    .form-textarea {
        background: var(--color-bg-alt);
        border-color: var(--color-border);
        color: var(--color-text);
    }

    .form-input:focus,
    .form-textarea:focus {
        border-color: var(--color-primary);
        box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.2);
    }

    /* Pricing table */
    .pricing-table th {
        background: var(--color-bg-alt);
    }

    .pricing-table tr:hover td {
        background: var(--color-bg-alt);
    }

    /* Logo icon gradient adjustment */
    .logo-icon {
        background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    }

    /* Buttons - ensure good contrast */
    .btn-secondary {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }

    .btn-ghost:hover {
        background: var(--color-bg-alt);
    }

    /* Login box */
    .login-box {
        background: var(--color-bg-alt);
        border-color: var(--color-border);
    }

    .error-message {
        background: rgba(220, 38, 38, 0.1);
        border-color: rgba(220, 38, 38, 0.3);
    }
}

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

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

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

a:hover {
    color: var(--color-primary-dark);
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    color: var(--color-text);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--space-md);
}

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

.text-center {
    text-align: center;
}

/* ============================================
   Layout
   ============================================ */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    padding: var(--space-2xl) 0;
}

.section-alt {
    background-color: var(--color-bg-alt);
}

.section-dark {
    background-color: var(--color-bg-dark);
    color: var(--color-text-inverse);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
    color: var(--color-text-inverse);
}

/* ============================================
   Header & Navigation
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border-light);
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

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

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--radius-md);
}

.nav-main {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-main a {
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.95rem;
    padding: var(--space-sm) 0;
    position: relative;
}

.nav-main a:hover {
    color: var(--color-primary);
}

.nav-main a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-normal);
}

.nav-main a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    margin: 5px 0;
    transition: var(--transition-fast);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

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

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

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

.btn-accent:hover {
    background: var(--color-accent-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text);
}

.btn-ghost:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    padding-top: calc(var(--header-height) + var(--space-2xl));
    padding-bottom: var(--space-2xl);
    text-align: center;
}

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

.hero h1 {
    margin-bottom: var(--space-lg);
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--color-text-light);
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   Code Block
   ============================================ */
.code-block {
    background: var(--color-bg-dark);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin: var(--space-xl) auto;
    max-width: 600px;
    text-align: left;
    overflow-x: auto;
}

.code-block pre {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: #e2e8f0;
    line-height: 1.7;
    margin: 0;
}

.code-block .comment {
    color: #64748b;
}

.code-block .keyword {
    color: #f472b6;
}

.code-block .string {
    color: #34d399;
}

/* ============================================
   Feature Cards
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.feature-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: 0 8px 30px var(--color-shadow);
    transform: translateY(-4px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    font-size: 1.5rem;
}

.feature-card h4 {
    margin-bottom: var(--space-sm);
}

.feature-card p {
    color: var(--color-text-light);
    margin: 0;
}

/* ============================================
   Steps / How It Works
   ============================================ */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-xl);
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--space-md);
}

.step h4 {
    margin-bottom: var(--space-sm);
}

.step p {
    color: var(--color-text-light);
}

/* ============================================
   Pricing Table
   ============================================ */
.pricing-table {
    width: 100%;
    max-width: 800px;
    margin: var(--space-xl) auto;
    border-collapse: collapse;
}

.pricing-table th,
.pricing-table td {
    padding: var(--space-md) var(--space-lg);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.pricing-table th {
    background: var(--color-bg-alt);
    font-weight: 600;
}

.pricing-table tr:hover td {
    background: var(--color-bg-alt);
}

.price {
    font-weight: 700;
    color: var(--color-primary);
}

/* ============================================
   Problem/Solution Layout
   ============================================ */
.problem-solution {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.problem-list {
    list-style: none;
}

.problem-list li {
    padding: var(--space-sm) 0;
    padding-left: var(--space-lg);
    position: relative;
    color: var(--color-text-light);
}

.problem-list li::before {
    content: '✕';
    position: absolute;
    left: 0;
    color: #ef4444;
    font-weight: bold;
}

.solution-list {
    list-style: none;
}

.solution-list li {
    padding: var(--space-sm) 0;
    padding-left: var(--space-lg);
    position: relative;
}

.solution-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    text-align: center;
    padding: var(--space-2xl) 0;
}

.cta-section h2 {
    margin-bottom: var(--space-md);
}

.cta-section p {
    margin-bottom: var(--space-xl);
    color: rgba(255, 255, 255, 0.8);
}

.cta-section .hero-actions {
    justify-content: center;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background: var(--color-bg-dark);
    color: var(--color-text-inverse);
    padding: var(--space-xl) 0;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: white;
}

.footer-legal {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 500;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-family: inherit;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

/* ============================================
   Utility Classes
   ============================================ */
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    .nav-main {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .hero {
        padding-top: calc(var(--header-height) + var(--space-xl));
    }

    .problem-solution {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }

    .section {
        padding: var(--space-xl) 0;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }
}