/* =====================================================
   IRVANTA - INSTITUTIONAL KNOWLEDGE PORTAL DESIGN SYSTEM
   ===================================================== */

/* ROOT & VARIABLES */
:root {
    --primary: #3A4750;
    --accent-gold: #FFD700;
    --accent-red: #8B0000;
    --secondary-gray: #A9A9A9;
    --silver: #C0C0C0;
    --white: #FFFFFF;
    --off-white: #F5F5F5;
    --black: #000000;
    
    --spacing-base: 8px;
    --spacing-xs: 16px;
    --spacing-sm: 24px;
    --spacing-md: 40px;
    --spacing-lg: 60px;
    --spacing-xl: 80px;
    
    --transition: all 0.3s ease;
}

/* TYPOGRAPHY */
@import url('https://fonts.googleapis.com/css2?family=Lora:wght@400;500;600;700&family=Roboto:wght@400;500;700&display=swap');

html {
    scroll-behavior: smooth;
    font-family: 'Lora', serif;
    color: var(--primary);
    background-color: var(--white);
}

body {
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
    line-height: 1.3;
    margin: 0;
    color: var(--primary);
}

h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-lg);
    text-balance;
}

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

h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
    text-balance;
}

h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

p {
    font-size: 1rem;
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.6;
    color: var(--primary);
}

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

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

/* HEADER & NAVIGATION */
.header {
    background-color: var(--white);
    border-bottom: 1px solid var(--silver);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.navbar {
    padding: var(--spacing-sm) 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.logo-image {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: 4px;
}

.logo-text {
    color: var(--primary);
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
}

.logo a {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    margin: 0;
    padding: 0;
}

.nav-link {
    font-family: 'Roboto', sans-serif;
    font-size: 1rem;
    font-weight: 500;
    color: var(--primary);
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-gold);
    transition: width 0.3s ease;
}

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

/* MAIN CONTENT */
.main-content {
    min-height: calc(100vh - 140px);
}

/* CONTAINERS & SPACING */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.section-full-width {
    width: 100vw;
    position: relative;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
}

/* HERO SECTION */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    padding: var(--spacing-xl) var(--spacing-md);
    background-color: var(--off-white);
}

.hero-image {
    width: 100%;
    height: 500px;
    object-fit: cover;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.hero-content h1 {
    margin-bottom: var(--spacing-md);
}

/* CARDS */
.card {
    background-color: var(--white);
    border: 1px solid var(--silver);
    padding: var(--spacing-md);
    border-radius: 4px;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
    border-color: var(--accent-gold);
}

.card h3 {
    margin-bottom: var(--spacing-sm);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* BUTTONS */
.btn {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--primary);
    color: var(--white);
    border: 2px solid var(--primary);
    border-radius: 4px;
    font-family: 'Roboto', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn-secondary {
    background-color: var(--white);
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

/* FOOTER */
.footer {
    background-color: var(--primary);
    color: var(--white);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    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);
    margin-bottom: var(--spacing-sm);
}

.footer-section p {
    color: var(--white);
    font-size: 0.95rem;
}

.footer-section a {
    color: var(--white);
}

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

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

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

.footer-bottom p {
    margin: 0;
    color: var(--white);
}

/* BLOG PAGE */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.blog-card {
    background-color: var(--white);
    border: 1px solid var(--silver);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.blog-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

.blog-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.blog-content {
    padding: var(--spacing-md);
}

.blog-content h3 {
    margin-bottom: var(--spacing-sm);
}

.blog-meta {
    font-size: 0.9rem;
    color: var(--secondary-gray);
    margin-bottom: var(--spacing-sm);
}

.blog-excerpt {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.read-more {
    color: var(--accent-gold);
    font-weight: 600;
    font-size: 0.95rem;
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--silver);
    border-radius: 4px;
    font-family: 'Lora', serif;
    font-size: 1rem;
    color: var(--primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 200px;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.1);
}

/* CONTENT SECTIONS */
.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.text-content {
    padding: var(--spacing-md);
}

.text-content h2 {
    margin-bottom: var(--spacing-md);
}

.section-image {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    border-radius: 2px;
}

/* DISCLAIMER BANNER */
.disclaimer {
    background-color: rgba(139, 0, 0, 0.05);
    border-left: 4px solid var(--accent-red);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-radius: 2px;
}

.disclaimer p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        padding: var(--spacing-md);
    }

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

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .nav-menu {
        gap: var(--spacing-md);
    }
}

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

    .nav-menu {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

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

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: 1fr;
    }

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