/* ============================================
   Gadzooks Business Site
   Unified Design System
   ============================================ */

:root {
    /* ============================================
       COLOR SYSTEM
       ============================================ */

    /* Brand Colors */
    --color-brand-primary: #007bff;
    --color-brand-secondary: #F4A261;
    --color-brand-accent: #00d4ff;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    --gradient-accent: linear-gradient(135deg, #00d4ff 0%, #007bff 100%);
    --gradient-card: linear-gradient(135deg, rgba(0, 123, 255, 0.05) 0%, rgba(0, 212, 255, 0.02) 100%);

    /* Semantic Colors */
    --color-success: #5fac38;
    --color-warning: #a88134;
    --color-error: #db3d45;
    --color-info: #376c9d;

    /* Neutral Scale */
    --color-neutral-50: #FAFAFA;
    --color-neutral-100: #F5F5F5;
    --color-neutral-200: #E6E6E6;
    --color-neutral-300: #BFBFBF;
    --color-neutral-400: #999999;
    --color-neutral-500: #737373;
    --color-neutral-600: #595959;
    --color-neutral-700: #404040;
    --color-neutral-800: #2D2D2D;
    --color-neutral-900: #1A1A1A;

    /* Text Colors */
    --color-text-primary: #ffffff;
    --color-text-secondary: #999999;
    --color-text-tertiary: #666666;

    /* Background Colors */
    --color-background-app: #2d2d2d;
    --color-background-elevated: #363636;
    --color-background-default: rgba(54, 54, 54, 0.5);
    --color-background-overlay: rgba(45, 45, 45, 0.9);

    /* Border Colors */
    --color-border-default: rgb(196 196 196 / 10%);
    --color-border-subtle: rgb(255 255 255 / 8%);
    --color-border-overlay: rgb(255 255 255 / 15%);

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

    --font-family-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-family-secondary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', 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: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* ============================================
       SPACING SYSTEM
       ============================================ */

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-smd: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;

    /* ============================================
       LAYOUT
       ============================================ */

    --container-max-width: 1100px;
    --header-height: 4rem;

    /* ============================================
       BORDER RADIUS
       ============================================ */

    --radius-xs: 0.125rem;
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* ============================================
       SHADOWS
       ============================================ */

    --shadow-xs: 0 0.0625rem 0.125rem 0 rgba(0, 0, 0, 0.5);
    --shadow-sm: 0 0.125rem 0.25rem 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 0.25rem 0.375rem -0.0625rem rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 0.625rem 0.9375rem -0.1875rem rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 1.25rem 1.5625rem -0.3125rem rgba(0, 0, 0, 0.5);
    --shadow-2xl: 0 1.5625rem 3.125rem -0.75rem rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 2rem rgba(0, 123, 255, 0.3);

    /* ============================================
       TRANSITIONS
       ============================================ */

    --transition-rapid: 100ms;
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-slower: 500ms ease;

    /* ============================================
       Z-INDEX LAYERS
       ============================================ */

    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 500;
    --z-header: 996;
    --z-menu: 999;
    --z-overlay: 1000;
    --z-modal: 2000;
    --z-toast: 5000;
}

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

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

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

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background: var(--color-background-app);
    -webkit-tap-highlight-color: transparent;
    overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-secondary);
    line-height: var(--line-height-tight);
    color: var(--color-text-primary);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-extrabold);
    letter-spacing: -0.02em;
}

h2 {
    font-size: var(--font-size-4xl);
    letter-spacing: -0.01em;
}

h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
}

h4 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
}

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

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

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

strong {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

/* ============================================
   CONTAINER
   ============================================ */

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-background-overlay);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    z-index: var(--z-header);
    display: flex;
    align-items: center;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-family-secondary);
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    text-decoration: none;
}

.logo:hover {
    color: var(--color-text-primary);
}

.logo-icon {
    width: 2rem;
    height: 2rem;
    object-fit: contain;
}

.nav {
    display: flex;
    gap: var(--spacing-2xl);
    align-items: center;
}

.nav-link {
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    font-size: var(--font-size-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text-primary);
}


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

.hero {
    padding: calc(var(--header-height) + var(--spacing-4xl)) 0 var(--spacing-3xl);
    text-align: center;
}

.hero-title {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    max-width: 650px;
    margin: 0 auto var(--spacing-2xl);
    line-height: var(--line-height-relaxed);
}

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

/* ============================================
   SECTIONS
   ============================================ */

.section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin-bottom: var(--spacing-2xl);
    line-height: var(--line-height-relaxed);
}

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

.section-centered .section-subtitle {
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   CARDS
   ============================================ */

.card {
    background: var(--color-background-default);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-border-default);
    backdrop-filter: blur(0.5rem);
    -webkit-backdrop-filter: blur(0.5rem);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.card:hover {
    border-color: var(--color-border-overlay);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.card-text {
    color: var(--color-text-secondary);
    margin-bottom: 0;
    line-height: var(--line-height-relaxed);
}

/* ============================================
   GRID
   ============================================ */

.grid {
    display: grid;
    gap: var(--spacing-xl);
}

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

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ============================================
   STATS
   ============================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-lg);
}

.stat {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-background-default);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-default);
    backdrop-filter: blur(0.5rem);
    -webkit-backdrop-filter: blur(0.5rem);
}

.stat-value {
    font-family: var(--font-family-secondary);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-brand-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================
   FEATURE LIST
   ============================================ */

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list li {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border-subtle);
    color: var(--color-text-secondary);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.feature-list li:last-child {
    border-bottom: none;
}

.feature-list .feature-icon {
    color: var(--color-brand-primary);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    width: 1.5rem;
}

/* ============================================
   CALLOUT
   ============================================ */

.callout {
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.08) 0%, rgba(0, 212, 255, 0.04) 100%);
    border: 1px solid rgba(0, 123, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.callout-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

.callout-text {
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

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

.btn {
    display: inline-block;
    padding: var(--spacing-smd) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--color-brand-primary);
    color: #ffffff;
}

.btn-primary:hover {
    background: #0056b3;
    color: #ffffff;
    box-shadow: var(--shadow-glow);
}

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

.btn-secondary:hover {
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--color-text-primary);
}

/* ============================================
   TABLES
   ============================================ */

.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border-subtle);
}

th {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

td {
    color: var(--color-text-secondary);
}

/* ============================================
   ARCHITECTURE DIAGRAM
   ============================================ */

.architecture-section {
    background: var(--color-background-default);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-border-default);
    backdrop-filter: blur(0.5rem);
    -webkit-backdrop-filter: blur(0.5rem);
}

.architecture-layer {
    margin-bottom: var(--spacing-lg);
}

.architecture-layer:last-child {
    margin-bottom: 0;
}

.layer-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-smd);
}

.layer-items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.layer-item {
    background: rgba(0, 123, 255, 0.1);
    border: 1px solid rgba(0, 123, 255, 0.2);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-smd);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ============================================
   CONTACT
   ============================================ */

.contact-info {
    display: grid;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-icon {
    color: var(--color-brand-primary);
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.contact-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-xs);
}

.contact-value {
    color: var(--color-text-primary);
}

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

.footer {
    padding: 3rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    margin-top: var(--spacing-4xl);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-family-secondary);
    font-weight: var(--font-weight-bold);
    font-size: 1.125rem;
    color: var(--color-text-primary);
}

.footer-logo-icon {
    width: 1.75rem;
    height: 1.75rem;
}

.footer-nav {
    display: flex;
    gap: 2rem;
}

.footer-nav a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color 0.2s ease;
}

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

.footer-copyright {
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

/* Legacy footer styles */
.footer-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: 0;
}

.footer-links {
    display: flex;
    gap: var(--spacing-xl);
}

.footer-link {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.footer-link:hover {
    color: var(--color-text-secondary);
}

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

.page-header {
    padding: calc(var(--header-height) + var(--spacing-2xl)) 0 var(--spacing-xl);
    border-bottom: 1px solid var(--color-border-subtle);
    margin-bottom: var(--spacing-2xl);
}

.page-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

.page-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin-bottom: 0;
}

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

@media (max-width: 968px) {
    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 3.5rem;
        --font-size-5xl: 2.25rem;
        --font-size-4xl: 2rem;
    }

    .nav {
        gap: var(--spacing-lg);
    }

    .nav-link {
        font-size: var(--font-size-sm);
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: calc(var(--header-height) + var(--spacing-2xl)) 0 var(--spacing-xl);
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

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

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-md) var(--spacing-lg);
    }

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

@media (max-width: 480px) {
    .header-content {
        padding: 0 var(--spacing-sm);
    }

    .logo {
        font-size: 1rem;
        gap: 0.5rem;
    }

    .logo-icon {
        width: 1.5rem;
        height: 1.5rem;
    }

    .nav {
        gap: var(--spacing-sm);
    }

    .nav-link {
        font-size: var(--font-size-xs);
    }

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

    .hero-title {
        font-size: var(--font-size-3xl);
    }
}