/*
Theme Name: Sitalama Tech Enterprises
Description: Professional WordPress theme for Sitalama Tech - DevOps, Cloud, AI Education & Services
Version: 2.0
Author: Sitalama Tech Team
Author URI: https://sitalama.tech
Text Domain: sitalama
Tags: professional, education, technology, responsive, modern, seo-friendly
*/

/* ==========================================================================
   CSS CUSTOM PROPERTIES (Design System)
   ========================================================================== */
:root {
    /* Brand Colors - Professional Tech Palette */
    --color-primary: #2563eb;        /* Professional Blue */
    --color-primary-dark: #1e40af;   /* Darker Blue */
    --color-primary-light: #60a5fa;  /* Light Blue */
    --color-secondary: #10b981;      /* Tech Green */
    --color-accent: #f59e0b;         /* Warm Accent */
    --color-dark: #0f172a;           /* Almost Black */
    --color-gray-900: #1e293b;
    --color-gray-800: #334155;
    --color-gray-700: #475569;
    --color-gray-600: #64748b;
    --color-gray-500: #94a3b8;
    --color-gray-400: #cbd5e1;
    --color-gray-300: #e2e8f0;
    --color-gray-200: #f1f5f9;
    --color-gray-100: #f8fafc;
    --color-white: #ffffff;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Poppins', 'Inter', sans-serif;
    
    /* Font Sizes - Fluid Typography */
    --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
    --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1.05rem + 0.375vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.35rem + 0.75vw, 1.875rem);
    --text-3xl: clamp(1.875rem, 1.65rem + 1.125vw, 2.25rem);
    --text-4xl: clamp(2.25rem, 1.95rem + 1.5vw, 3rem);
    --text-5xl: clamp(3rem, 2.5rem + 2.5vw, 4rem);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Layout */
    --container-max: 1280px;
    --container-padding: var(--spacing-lg);
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

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

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

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

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

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

a:hover, a:focus {
    color: var(--color-primary-dark);
    outline: none;
}

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

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

.section {
    padding: var(--spacing-4xl) 0;
}

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

.section--dark {
    background-color: var(--color-dark);
    color: var(--color-white);
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.site-header {
    background-color: var(--color-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-base);
}

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

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-lg);
}

.site-logo {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: transform var(--transition-fast);
}

.site-logo:hover {
    transform: scale(1.05);
    color: var(--color-primary-dark);
}

.site-logo__text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.site-logo__tagline {
    font-size: var(--text-xs);
    font-weight: 400;
    color: var(--color-gray-600);
}

/* Navigation */
.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.main-nav a {
    color: var(--color-gray-800);
    font-weight: 500;
    font-size: var(--text-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    position: relative;
}

.main-nav a:hover,
.main-nav a:focus {
    color: var(--color-primary);
    background-color: var(--color-gray-100);
}

.main-nav .current-menu-item a,
.main-nav .current_page_item a {
    color: var(--color-primary);
    font-weight: 600;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: var(--text-base);
    transition: all var(--transition-fast);
}

.menu-toggle:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-banner {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--spacing-4xl) 0;
    min-height: 85vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.05)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,154.7C960,171,1056,181,1152,170.7C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.1;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-content__badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 50px;
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-content h1 {
    font-size: var(--text-5xl);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    color: var(--color-white);
    line-height: 1.1;
}

.hero-content__subtitle {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-2xl);
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn--primary {
    background-color: var(--color-secondary);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn--primary:hover {
    background-color: #059669;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--color-white);
}

.btn--secondary {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
    border-color: var(--color-white);
    backdrop-filter: blur(10px);
}

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

/* ==========================================================================
   SERVICES & OFFERINGS SECTION
   ========================================================================== */
.college-engagements {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-white);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-title {
    font-size: var(--text-4xl);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    line-height: 1.7;
}

.engagements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

/* Modern Card Design */
.engagement-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-200);
    position: relative;
    overflow: hidden;
}

.engagement-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.engagement-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.engagement-card:hover::before {
    transform: scaleX(1);
}

.engagement-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-3xl);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base);
}

.engagement-card:hover .engagement-icon {
    transform: scale(1.1) rotate(5deg);
}

.engagement-card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.engagement-card__college {
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.engagement-card__date {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.engagement-card p {
    color: var(--color-gray-700);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.engagement-card .read-more {
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--text-sm);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: gap var(--transition-fast);
}

.engagement-card:hover .read-more {
    gap: var(--spacing-sm);
}

/* ==========================================================================
   MAIN CONTENT & BLOG LAYOUT
   ========================================================================== */
.main-content {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-gray-100);
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: var(--spacing-2xl);
    align-items: start;
}

.blog-posts {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow);
}

/* Blog Post Cards */
.post {
    border-bottom: 1px solid var(--color-gray-300);
    padding-bottom: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    transition: all var(--transition-base);
}

.post:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.post-thumbnail {
    margin-bottom: var(--spacing-lg);
    border-radius: var(--border-radius);
    overflow: hidden;
    aspect-ratio: 16/9;
}

.post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.post:hover .post-thumbnail img {
    transform: scale(1.05);
}

.post-title {
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.post-title a {
    color: var(--color-dark);
    transition: color var(--transition-fast);
}

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

.post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    color: var(--color-gray-600);
    font-size: var(--text-sm);
    margin-bottom: var(--spacing-lg);
}

.post-meta__item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.post-excerpt {
    color: var(--color-gray-700);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.read-more {
    color: var(--color-primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.read-more:hover {
    gap: var(--spacing-sm);
    color: var(--color-primary-dark);
}

/* ==========================================================================
   SIDEBAR & WIDGETS
   ========================================================================== */
.sidebar {
    position: sticky;
    top: calc(var(--spacing-4xl) + 20px);
}

.widget {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--color-gray-200);
}

.widget:last-child {
    margin-bottom: 0;
}

.widget-title {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
    padding-bottom: var(--spacing-md);
    border-bottom: 3px solid var(--color-primary);
    position: relative;
}

.widget-title::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--color-secondary);
}

.widget ul {
    list-style: none;
}

.widget ul li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.widget ul li:last-child {
    border-bottom: none;
}

.widget ul li a {
    color: var(--color-gray-700);
    transition: all var(--transition-fast);
    display: block;
    padding-left: var(--spacing-md);
    position: relative;
}

.widget ul li a::before {
    content: '→';
    position: absolute;
    left: 0;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.widget ul li a:hover {
    color: var(--color-primary);
    padding-left: var(--spacing-lg);
}

.widget ul li a:hover::before {
    opacity: 1;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
    background: var(--color-dark);
    color: var(--color-gray-400);
    padding-top: var(--spacing-4xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    padding-bottom: var(--spacing-3xl);
}

.footer-section h3 {
    font-size: var(--text-lg);
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    font-weight: 700;
}

.footer-section p {
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.footer-section a {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
    display: inline-block;
    margin-bottom: var(--spacing-sm);
}

.footer-section a:hover {
    color: var(--color-primary-light);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-800);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer-bottom__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-800);
    border-radius: 50%;
    color: var(--color-white);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--color-primary);
    transform: translateY(-3px);
}

/* ==========================================================================
   PAGE TEMPLATES
   ========================================================================== */
.page-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--spacing-4xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: var(--color-white);
    clip-path: polygon(0 50%, 100% 0, 100% 100%, 0 100%);
}

.page-title {
    font-size: var(--text-4xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
    position: relative;
    z-index: 1;
}

.page-breadcrumb {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.8);
    position: relative;
    z-index: 1;
}

.page-content {
    padding: var(--spacing-4xl) 0;
    background: var(--color-white);
}

.page-content__inner {
    max-width: 850px;
    margin: 0 auto;
}

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

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-xl); }
.mb-3 { margin-bottom: var(--spacing-2xl); }

.hidden { display: none; }
.block { display: block; }
.flex { display: flex; }
.grid { display: grid; }

/* Loading Animation */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

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

/* ==========================================================================
   RESPONSIVE DESIGN (Mobile-First Approach)
   ========================================================================== */

/* Tablets and below (768px) */
@media (max-width: 768px) {
    :root {
        --container-padding: var(--spacing-md);
    }
    
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .menu-toggle {
        display: block;
    }
    
    .main-nav {
        width: 100%;
        display: none;
    }
    
    .main-nav--open {
        display: block;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 0;
        background: var(--color-white);
        border-radius: var(--border-radius);
        box-shadow: var(--shadow-md);
        padding: var(--spacing-md);
    }
    
    .main-nav li {
        width: 100%;
    }
    
    .main-nav a {
        display: block;
        padding: var(--spacing-md);
    }
    
    .hero-content h1 {
        font-size: var(--text-3xl);
    }
    
    .hero-content__subtitle {
        font-size: var(--text-base);
    }
    
    .hero-content__cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
    }
    
    .engagements-grid {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: var(--spacing-3xl) 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .footer-bottom__content {
        flex-direction: column;
        text-align: center;
    }
}

/* Mobile phones (480px) */
@media (max-width: 480px) {
    .engagement-card {
        padding: var(--spacing-lg);
    }
    
    .hero-content__badge {
        font-size: var(--text-xs);
        padding: var(--spacing-xs) var(--spacing-md);
    }
}

/* Large screens (1440px+) */
@media (min-width: 1440px) {
    :root {
        --container-max: 1400px;
    }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */
@media print {
    .site-header,
    .main-nav,
    .sidebar,
    .site-footer,
    .btn,
    .cta-button {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
    }
    
    a {
        text-decoration: underline;
        color: #000;
    }
}