/* ============================================
   YAALI TECH - MAIN STYLESHEET
   Light Theme - Red, Black, White
   ============================================ */

/* ============================================
   DESIGN TOKENS
   ============================================ */
:root {
    /* Colors - Light Theme with Logo Colors (Red, Black, White) */
    --color-primary: #bf2028;
    /* Logo Red - Primary brand color */
    --color-secondary: #8a1820;
    /* Darker red for depth */
    --color-accent: #bf2028;
    /* Logo Red for accents */
    --color-highlight: #bf2028;
    /* Logo Red for highlights */
    --color-text: #1a1a1a;
    /* Near black for text */
    --color-text-muted: #666666;
    /* Gray for secondary text */
    --color-background: #ffffff;
    /* White background */
    --color-surface: #f8f8f8;
    /* Light gray for cards/surfaces */
    --color-border: #e0e0e0;
    /* Light gray borders */

    /* Typography */
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;

    /* Font Sizes - Modular Scale (1.25) */
    --text-xs: 0.64rem;
    --text-sm: 0.8rem;
    --text-base: 1rem;
    --text-lg: 1.25rem;
    --text-xl: 1.563rem;
    --text-2xl: 1.953rem;
    --text-3xl: 2.441rem;
    --text-4xl: 3.052rem;

    /* Spacing - 8px base */
    --space-1: 0.5rem;
    /* 8px */
    --space-2: 1rem;
    /* 16px */
    --space-3: 1.5rem;
    /* 24px */
    --space-4: 2rem;
    /* 32px */
    --space-6: 3rem;
    /* 48px */
    --space-8: 4rem;
    /* 64px */
    --space-12: 6rem;
    /* 96px */

    /* Layout */
    --container-max: 1200px;
    --container-wide: 1400px;
    --border-radius: 4px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

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

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

h1 {
    font-size: var(--text-4xl);
}

h2 {
    font-size: var(--text-3xl);
}

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

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

h5 {
    font-size: var(--text-lg);
}

h6 {
    font-size: var(--text-base);
}

p {
    margin-bottom: var(--space-2);
}

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

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

strong {
    font-weight: 600;
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-2);
}

.container-wide {
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 var(--space-2);
}

.section {
    padding: var(--space-8) 0;
}

.section-lg {
    padding: var(--space-12) 0;
}

/* ============================================
   GRID SYSTEM
   ============================================ */
.grid {
    display: grid;
    gap: var(--space-4);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: 500;
    text-align: center;
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-secondary);
    color: #ffffff;
    border-color: var(--color-secondary);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: #ffffff;
    transform: translateY(-2px);
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background-color: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--space-4);
    transition: all var(--transition-base);
}

.card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(191, 32, 40, 0.1);
}

.card-title {
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.card-text {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
    text-align: center;
}

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

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

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

.mb-1 {
    margin-bottom: var(--space-1);
}

.mb-2 {
    margin-bottom: var(--space-2);
}

.mb-3 {
    margin-bottom: var(--space-3);
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-6 {
    margin-bottom: var(--space-6);
}

.mt-1 {
    margin-top: var(--space-1);
}

.mt-2 {
    margin-top: var(--space-2);
}

.mt-3 {
    margin-top: var(--space-3);
}

.mt-4 {
    margin-top: var(--space-4);
}

.mt-6 {
    margin-top: var(--space-6);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    :root {
        --text-4xl: 2.441rem;
        --text-3xl: 1.953rem;
        --text-2xl: 1.563rem;
    }

    .section {
        padding: var(--space-6) 0;
    }

    .section-lg {
        padding: var(--space-8) 0;
    }

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

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}