/* ============================================
   ILORAC - Design System
   Clean, Minimal, High Contrast
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Colors - High Contrast Palette */
    --color-primary: #1a1a2e;
    --color-primary-light: #2d2d44;
    --color-secondary: #16213e;
    --color-accent: #0066cc;
    --color-accent-hover: #0052a3;
    --color-white: #ffffff;
    --color-gray-100: #f8f9fa;
    --color-gray-200: #e9ecef;
    --color-gray-300: #dee2e6;
    --color-gray-600: #6c757d;
    --color-gray-800: #343a40;
    --color-text: #1a1a2e;
    --color-text-muted: #6c757d;
    --color-text-inverse: #ffffff;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --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;
    --line-height-tight: 1.2;
    --line-height-base: 1.6;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Layout */
    --container-max: 1200px;
    --container-padding: 1.5rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);

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

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-white);
}

/* Focus States - Accessibility */
:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* Skip Link - Accessibility */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    padding: var(--space-md);
    background: var(--color-accent);
    color: var(--color-white);
    z-index: 1000;
}

.skip-link:focus {
    top: 0;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

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

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

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

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

@media (min-width: 768px) {
    h1 {
        font-size: var(--font-size-5xl);
    }

    h2 {
        font-size: var(--font-size-4xl);
    }

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

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

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

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

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

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

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    transition: box-shadow var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    letter-spacing: 0.05em;
}

.logo-img {
    height: 40px;
    width: auto;
    filter: invert(1);
}

/* Navigation */
.nav-menu {
    display: none;
    list-style: none;
    gap: var(--space-xl);
}

.nav-menu.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-md);
    gap: var(--space-md);
}

@media (min-width: 768px) {
    .nav-menu {
        display: flex;
        position: static;
        flex-direction: row;
        padding: 0;
        border: none;
        box-shadow: none;
    }

    .nav-toggle {
        display: none;
    }
}

.nav-link {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    text-decoration: none;
    padding: var(--space-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--color-accent);
}

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

/* Mobile Menu Toggle */
.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.nav-toggle-bar {
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    padding: calc(72px + var(--space-3xl)) 0 var(--space-3xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-text-inverse);
    display: flex;
    align-items: center;
}

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

.hero-title {
    color: var(--color-white);
    margin-bottom: var(--space-lg);
    font-size: var(--font-size-3xl);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--font-size-5xl);
    }
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-300);
    margin-bottom: var(--space-xl);
    max-width: 600px;
}

@media (min-width: 768px) {
    .hero-subtitle {
        font-size: var(--font-size-xl);
    }
}

/* ============================================
   Sections
   ============================================ */
.section {
    padding: var(--space-4xl) 0;
}

.section-alt {
    background-color: var(--color-gray-100);
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-md);
    color: var(--color-primary);
}

.section-intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-3xl);
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
}

/* ============================================
   Services Grid
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

@media (min-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.service-card {
    background-color: var(--color-white);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-200);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background-color: var(--color-gray-100);
    border-radius: var(--radius-md);
    color: var(--color-accent);
    margin-bottom: var(--space-lg);
}

.service-title {
    margin-bottom: var(--space-sm);
    color: var(--color-primary);
}

.service-description {
    color: var(--color-text-muted);
    margin-bottom: 0;
    font-size: var(--font-size-base);
}

/* ============================================
   Projects Grid
   ============================================ */
.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

@media (min-width: 768px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.project-card {
    position: relative;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 320px;
    display: flex;
    align-items: flex-end;
    transition: all var(--transition-base);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.project-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.project-content {
    position: relative;
    z-index: 2;
    padding: var(--space-xl);
    color: var(--color-white);
    width: 100%;
    background: linear-gradient(to top, rgba(26, 26, 46, 0.95) 0%, rgba(26, 26, 46, 0.8) 60%, transparent 100%);
}

.project-title {
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.project-description {
    color: var(--color-gray-300);
    margin-bottom: 0;
}

/* ============================================
   Contact Section
   ============================================ */
.contact-container {
    text-align: center;
}

.contact-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.contact-email {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--color-accent);
    padding: var(--space-md) var(--space-xl);
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.contact-email:hover {
    color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.footer-copyright {
    font-size: var(--font-size-sm);
    color: var(--color-gray-300);
    margin: 0;
}

/* ============================================
   Utilities
   ============================================ */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}