/**
 * Urticad Tech Ltd Website Styles - V3 Premium
 * 
 * Strict adherence to Urticad VI Guidelines V3.
 * Focus: Elegance, Premium Feel, Glassmorphism, Sophisticated Typography.
 */

/* Import Google Fonts - Inter & Playfair Display (for editorial elegance if needed, sticking to Inter for now per strict VI) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@200;300;400;500;600;700&display=swap');

/* CSS Variables - Premium Design Tokens */
:root {
    /* --- The 5 Harmony Swatches --- */
    --swatch-blue: #3976D2;
    --swatch-sky: #70AAEC;
    --swatch-sage: #98A562;
    --swatch-olive: #818C52;
    --swatch-bronze: #9F7C4E;

    /* --- Semantic Warmth Mapping --- */

    /* Backgrounds: No Pure White */
    --bg-canvas: #FAF9F6;
    /* Warm Alabaster */
    --bg-subtle: #F0EFE9;
    /* Darker Cream for sections */
    --bg-dark-structure: #2E3028;
    /* Dark Olive-Grey for Footer */

    /* Text: No Bold Black */
    --text-primary: #3E3C38;
    /* Deep Umber */
    --text-secondary: #5C554B;
    /* Warm Stone */
    --text-heading: #2C2A26;
    /* Charcoal Earth */

    /* Borders */
    --border-subtle: #E6E2DC;
    --border-accent: #818C52;
    /* Olive */

    /* Interactive */
    --color-primary: #3976D2;
    /* Keeping legacy var name for compatibility */
    --action-primary: #3976D2;
    /* Blue Focus */
    --action-hover: #295BB5;
    --focus-ring: rgba(159, 124, 78, 0.5);
    /* Bronze Glow */

    /* Shadows */
    --shadow-warm: 0 4px 14px rgba(159, 124, 78, 0.25);

    /* Legacy mappings */
    --color-surface: var(--bg-canvas);
    --color-background: var(--bg-canvas);
    --color-text-body: var(--text-primary);
    --color-text-heading: var(--text-heading);

    /* Legacy compatibility */
    --btn-color: #ffffff;
    --btn-bg: var(--color-primary);

    /* Typography */
    --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: "SF Mono", "Roboto Mono", monospace;

    /* Spacing System */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 32px;
    --spacing-xl: 64px;
    --spacing-2xl: 128px;

    /* Radii */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.08);
    --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.07);

    /* Transitions */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --duration-normal: 0.4s;
}

/* Dark Mode Tokens - Adjusted for Warmth if needed, or largely overridden by specific classes */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-canvas: #1C1B1A;
        /* Warm dark */
        --bg-subtle: #242220;
        --text-primary: #E6E2DC;
        --text-heading: #FAF9F6;
        --color-background: #1C1B1A;
        --color-surface: #242220;

        --color-primary: #70AAEC;
        /* Lighter blue for dark mode text/accents if needed */
        --color-primary-light: #3976D2;
        --color-primary-dark: #1E3A8A;

        --color-surface-dim: #0F172A;
        /* Slate 900 */

        --color-text-body: #E0E0E0;
        --color-text-muted: #A0A0A0;

        --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
        --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);

        --btn-color: #1a1a1a;
    }
}

/* Global Reset & Base */
html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-background);
    color: var(--color-text-body);
    line-height: 1.6;
    margin: 0;
    transition: background-color var(--duration-normal) var(--ease-out-expo), color var(--duration-normal) var(--ease-out-expo);
}

/* Typography - Elegant & Readable */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-sans);
    color: var(--color-text-heading);
    letter-spacing: -0.02em;
    /* Tighter tracking for headings */
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

/* Mobile Typography */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
}

p {
    margin-bottom: 1rem;
    font-weight: 300;
    /* Lighter body text */
}

a {
    transition: all var(--duration-normal) var(--ease-out-expo);
}

/* Text Utilities */
.text-muted {
    color: var(--color-text-muted);
}

.text-on-surface {
    color: var(--color-text-body);
}

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

/* Glassmorphism Utilities */
.glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.glass-dark {
    background: rgba(28, 27, 30, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

@media (prefers-color-scheme: dark) {
    .glass {
        background: rgba(28, 27, 30, 0.7);
        border-color: rgba(255, 255, 255, 0.05);
    }
}

/* Component: Buttons - Premium Pill Shape */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: var(--radius-full);
    font-weight: 500;
    font-size: 0.95rem;
    letter-spacing: 0.01em;
    transition: transform 0.3s var(--ease-out-expo), box-shadow 0.3s var(--ease-out-expo), opacity 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    border: none;
}

.btn-primary {
    background-color: var(--swatch-blue);
    color: #ffffff;
    /* High contrast */
    box-shadow: 0 4px 12px rgba(159, 124, 78, 0.2);
    border-radius: 8px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(57, 118, 210, 0.4);
}

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

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

/* Component: Cards - Elegant Floating Surfaces */
.card {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.03);
    transition: transform 0.4s var(--ease-out-expo), box-shadow 0.4s var(--ease-out-expo);
}

@media (prefers-color-scheme: dark) {
    .card {
        border-color: rgba(255, 255, 255, 0.05);
        background-color: #242226;
    }
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

/* Component: Hero Section Enhancements */
.hero-gradient-text {
    background: linear-gradient(135deg, var(--color-text-heading) 30%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (prefers-color-scheme: dark) {
    .hero-gradient-text {
        background: linear-gradient(135deg, #FFF 30%, var(--color-primary) 100%);
        -webkit-background-clip: text;
        background-clip: text;
    }
}

/* Layout Utilities */
.section-padding {
    padding-top: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
}

.container-tight {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Animation Utilities */
.fade-in-up {
    animation: fadeInUp 0.8s var(--ease-out-expo) forwards;
    opacity: 0;
    transform: translateY(20px);
}

.delay-100 {
    animation-delay: 0.1s;
}

.delay-200 {
    animation-delay: 0.2s;
}

.delay-300 {
    animation-delay: 0.3s;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: rgba(0, 0, 0, 0.2);
}

/* Header Glass Effect */
header {
    background-color: rgba(255, 255, 255, 0.0);
    /* Start transparent */
    transition: background-color 0.3s ease, backdrop-filter 0.3s ease, box-shadow 0.3s ease;
}

header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    /* Almost solid white for readability */
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    /* Stronger shadow to separate from content */
}

@media (prefers-color-scheme: dark) {
    header.scrolled {
        background-color: rgba(28, 27, 30, 0.98);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    }
}