/* ========================================
   Tayega Website - Mobile-First Styles
   ======================================== */

/* CSS Custom Properties */
:root {
    /* Colors - Corporate Navy Palette */
    --color-primary: #1a365d;
    --color-primary-dark: #0f2744;
    --color-primary-light: #2c5282;
    --color-secondary: #4a5568;
    --color-accent: #3182ce;
    --color-text: #2d3748;
    --color-text-light: #718096;
    --color-white: #ffffff;
    --color-background: #f7fafc;
    --color-border: #e2e8f0;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', 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;
    --line-height-base: 1.6;
    --line-height-tight: 1.25;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Layout */
    --container-max-width: 1200px;
    --header-height: 70px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

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);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

/* ========================================
   Header & Navigation
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.025em;
}

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

/* Mobile Navigation Toggle */
.nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.hamburger {
    position: relative;
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    transition: background-color var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    transition: transform var(--transition-base);
}

.hamburger::before {
    top: -7px;
}

.hamburger::after {
    top: 7px;
}

/* Hamburger Active State */
.nav-toggle[aria-expanded="true"] .hamburger {
    background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Navigation */
.nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
}

.nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.nav-list {
    list-style: none;
    padding: var(--spacing-sm) 0;
}

.nav-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text);
    font-weight: 500;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

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

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

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

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

/* ========================================
   Hero Section
   ======================================== */
.hero {
    padding: calc(var(--header-height) + var(--spacing-3xl)) var(--spacing-sm) var(--spacing-3xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    text-align: center;
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.025em;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    font-weight: 500;
    opacity: 0.9;
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: var(--font-size-base);
    opacity: 0.85;
    max-width: 500px;
    margin: 0 auto var(--spacing-lg);
}

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

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

/* ========================================
   Section Styles
   ======================================== */
.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    line-height: var(--line-height-tight);
}

/* ========================================
   Services Section
   ======================================== */
.services {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background);
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.service-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.service-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background-color: var(--color-background);
    border-radius: 50%;
    color: var(--color-primary);
}

.service-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.service-description {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

/* ========================================
   About Section
   ======================================== */
.about {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-white);
}

.about-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}

.about-content p:last-child {
    margin-bottom: 0;
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background);
}

.contact-content {
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
}

.contact-content > p:first-child {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-lg);
}

.contact-content .btn {
    margin-bottom: var(--spacing-lg);
}

.contact-location {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

.contact-location svg {
    flex-shrink: 0;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-primary);
    color: var(--color-white);
}

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

.footer-logo {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.025em;
}

.footer-copyright {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* ========================================
   Tablet Breakpoint (768px)
   ======================================== */
@media (min-width: 768px) {
    :root {
        --font-size-3xl: 2.5rem;
        --font-size-4xl: 3rem;
    }
    
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    .hero {
        padding-top: calc(var(--header-height) + var(--spacing-3xl));
        min-height: 70vh;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-xl);
    }
    
    .hero-description {
        font-size: var(--font-size-lg);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    .service-card {
        padding: var(--spacing-xl);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
}

/* ========================================
   Desktop Breakpoint (1024px)
   ======================================== */
@media (min-width: 1024px) {
    /* Desktop Navigation */
    .nav-toggle {
        display: none;
    }
    
    .nav {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        background: none;
        box-shadow: none;
    }
    
    .nav-list {
        display: flex;
        gap: var(--spacing-md);
        padding: 0;
    }
    
    .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .nav-link:hover {
        background-color: transparent;
        color: var(--color-accent);
    }
    
    /* Hero adjustments */
    .hero {
        min-height: 80vh;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .hero-description {
        max-width: 600px;
    }
    
    /* Services */
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* About */
    .about-content {
        max-width: 800px;
    }
    
    .about-content p {
        font-size: var(--font-size-lg);
    }
}

/* ========================================
   Large Desktop (1200px+)
   ======================================== */
@media (min-width: 1200px) {
    .hero-title {
        font-size: 4rem;
    }
}

/* ========================================
   Reduced Motion
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}