/* ============================================
   KQELPS - INSTITUTIONAL KNOWLEDGE PORTAL
   Global Styles & Design System
   ============================================ */

:root {
    /* Color Palette */
    --primary: #2A3B4C;
    --accent-gold: #E8C547;
    --accent-green: #7B9E87;
    --accent-blue: #C6D8E2;
    --background: #F8F8F8;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-light: #CCCCCC;
    --white: #FFFFFF;
    
    /* Typography */
    --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Merriweather', Georgia, serif;
    --font-mono: 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 10px;
    --spacing-sm: 20px;
    --spacing-md: 40px;
    --spacing-lg: 80px;
    
    /* Transitions */
    --transition-smooth: 0.2s ease-in-out;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background-color: var(--background);
    line-height: 1.7;
    font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

h1 {
    font-size: 3.5rem;
    letter-spacing: -1px;
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: 2.5rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: 1.8rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

h4 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
    color: var(--text-primary);
}

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

a:hover {
    color: var(--accent-gold);
    text-decoration: underline;
}

ul, ol {
    margin-left: 2rem;
    margin-bottom: var(--spacing-sm);
}

li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.7;
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */

.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.header {
    background-color: var(--primary);
    color: var(--white);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

.logo {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.logo a {
    color: var(--white);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--white);
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--accent-blue);
    letter-spacing: 1px;
    text-transform: uppercase;
    font-family: var(--font-heading);
    margin: 0;
}

.navigation {
    flex: 1;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    flex-wrap: wrap;
}

.nav-link {
    color: var(--white);
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 500;
    position: relative;
    transition: color var(--transition-smooth);
}

.nav-link:hover {
    color: var(--accent-gold);
    text-decoration: none;
}

.nav-link.active {
    color: var(--accent-gold);
    text-decoration: underline;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .nav-list {
        gap: 1rem;
        justify-content: center;
    }

    .logo-text {
        font-size: 1.5rem;
    }
}

/* ============================================
   MAIN CONTENT
   ============================================ */

main {
    min-height: calc(100vh - 200px);
}

/* ============================================
   SECTIONS & SPACING
   ============================================ */

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

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

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

.section-dark h2,
.section-dark h3,
.section-dark h4 {
    color: var(--white);
}

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

.section-accent h2,
.section-accent h3,
.section-accent h4 {
    color: var(--white);
}

.section-blue {
    background-color: var(--accent-blue);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    background: linear-gradient(135deg, var(--primary) 0%, #1a2635 100%);
    color: var(--white);
    padding: 120px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(200, 216, 226, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-size: 3.5rem;
}

.hero p {
    color: var(--accent-blue);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
}

@media (max-width: 768px) {
    .hero {
        padding: 80px 0;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1rem;
    }
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 4px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-smooth);
    border: 2px solid transparent;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: darken(#2A3B4C, 10%);
    box-shadow: 0 4px 12px rgba(42, 59, 76, 0.3);
    text-decoration: none;
}

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

.btn-accent:hover {
    background-color: #d4b023;
    box-shadow: 0 4px 12px rgba(232, 197, 71, 0.3);
    text-decoration: none;
}

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

.btn-secondary:hover {
    background-color: var(--primary);
    color: var(--white);
    text-decoration: none;
}

/* ============================================
   CONTENT BLOCKS & CARDS
   ============================================ */

.row {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--spacing-md);
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.col-md-6 {
    grid-column: span 6;
}

.col-md-5 {
    grid-column: span 5;
}

.col-md-7 {
    grid-column: span 7;
}

.col-md-4 {
    grid-column: span 4;
}

@media (max-width: 1024px) {
    .col-md-6 {
        grid-column: span 12;
    }

    .col-md-5 {
        grid-column: span 12;
    }

    .col-md-7 {
        grid-column: span 12;
    }

    .col-md-4 {
        grid-column: span 6;
    }
}

@media (max-width: 768px) {
    .col-md-4 {
        grid-column: span 12;
    }

    .row {
        gap: var(--spacing-sm);
    }
}

/* Cards */

.card {
    background-color: var(--white);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: var(--spacing-md);
    transition: box-shadow var(--transition-smooth), transform var(--transition-smooth);
}

.card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

.card h3 {
    margin-top: 0;
}

.card-highlight {
    background-color: var(--accent-blue);
    border: 1px solid var(--accent-blue);
    padding: var(--spacing-md);
    border-radius: 8px;
    margin: var(--spacing-md) 0;
}

/* ============================================
   IMAGES
   ============================================ */

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

.img-hero {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
}

.img-full {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin: var(--spacing-md) 0;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background-color: var(--primary);
    color: var(--white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3,
.footer-section h4 {
    color: var(--accent-gold);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.footer-section p {
    color: var(--accent-blue);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.footer-section ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

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

.footer-section a {
    color: var(--accent-blue);
    transition: color var(--transition-smooth);
}

.footer-section a:hover {
    color: var(--accent-gold);
    text-decoration: underline;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
    color: var(--accent-blue);
    font-size: 0.9rem;
}

@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

.text-right {
    text-align: right;
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

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

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.py-lg {
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
}

.py-md {
    padding-top: var(--spacing-md);
    padding-bottom: var(--spacing-md);
}

.highlight {
    color: var(--accent-gold);
    font-weight: 600;
}

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

/* ============================================
   FORMS
   ============================================ */

.form-group {
    margin-bottom: var(--spacing-md);
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--text-primary);
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea,
select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-light);
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-smooth);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent-green);
    box-shadow: 0 0 0 3px rgba(123, 158, 135, 0.1);
}

textarea {
    resize: vertical;
    min-height: 150px;
}

/* ============================================
   RESPONSIVE TYPOGRAPHY
   ============================================ */

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.6rem;
    }

    h3 {
        font-size: 1.3rem;
    }

    body {
        font-size: 15px;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .header,
    .footer {
        display: none;
    }

    body {
        font-size: 12px;
    }
}