/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - 2025 Trends */
    --primary-color: #A67C5A; /* Mocha Mousse */
    --secondary-color: #C65D07; /* Terracotta */
    --accent-color: #2D5016; /* Forest Green */
    --background-color: #F7F3E9; /* Cream */
    --text-color: #2C2C2C; /* Charcoal */
    --text-light: #6B7280; /* Gray */
    --white: #FFFFFF;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-secondary: 'Lora', serif;
    
    /* Spacing */
    --container-max-width: 1200px;
    --section-padding: 5rem 0;
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    font-size: 16px;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }

p {
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(247, 243, 233, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(166, 124, 90, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.navbar {
    padding: 1rem 0;
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    width: 50px;
    height: auto;
    border-radius: 8px;
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.brand-subtitle {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-family: var(--font-primary);
    transition: var(--transition);
    position: relative;
}

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

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

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

.nav-cta {
    background: var(--primary-color);
    color: var(--white) !important;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.nav-cta::after {
    display: none;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.75), rgba(44, 44, 44, 0.85));
    z-index: -1;
}

.hero-content {
    text-align: center;
    color: var(--white);
    max-width: 800px;
    padding: 0 2rem;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 1rem;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.7);
    color: #FFFFFF;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 2.5vw, 2rem);
    font-weight: 500;
    margin-bottom: 1.5rem;
    opacity: 1;
    text-shadow: 3px 3px 8px rgba(0, 0, 0, 0.8);
    color: #FFFFFF;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    opacity: 1;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8);
    color: #FFFFFF;
    line-height: 1.7;
    font-weight: 500;
    background: rgba(0, 0, 0, 0.3);
    padding: 1rem 2rem;
    border-radius: 8px;
    backdrop-filter: blur(5px);
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-family: var(--font-primary);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: #B54A00;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(198, 93, 7, 0.3);
}

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

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* Section Styles */
.section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.section-title {
    color: var(--primary-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--secondary-color);
    border-radius: 2px;
}

/* Introduction Section */
.intro-section {
    background: var(--white);
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.intro-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.intro-image {
    position: relative;
}

.campus-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--border-radius);
    box-shadow: 0 20px 40px var(--shadow);
}

/* Goals and Objectives Section */
.goals-objectives-section {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
}

.goals-objectives-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.goals-card,
.objectives-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.goals-card:hover,
.objectives-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    font-size: 1.5rem;
}

.card-title {
    color: var(--white);
    margin: 0;
}

.card-list {
    list-style: none;
}

.card-list li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.card-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--secondary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

/* Faculty Section */
.faculty-section {
    background: var(--white);
}

.faculty-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.faculty-card {
    background: var(--background-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(166, 124, 90, 0.1);
}

.faculty-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px var(--shadow-hover);
    border-color: var(--primary-color);
}

.faculty-image {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    font-size: 2.5rem;
    margin: 0 auto 1.5rem;
}

.faculty-name {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.faculty-position {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.faculty-qualification {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Conferences Section */
.conferences-section {
    background: var(--background-color);
}

.conferences-content {
    max-width: 800px;
    margin: 0 auto;
}

.tabs-nav {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.tab-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: var(--white);
    color: var(--text-color);
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-family: var(--font-primary);
    font-weight: 600;
    transition: var(--transition);
}

.tab-button:hover,
.tab-button.active {
    background: var(--primary-color);
    color: var(--white);
}

.tab-panel {
    display: none;
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 3rem;
    box-shadow: 0 10px 30px var(--shadow);
}

.tab-panel.active {
    display: block;
    animation: fadeIn 0.5s ease-out;
}

.conference-info h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.conference-info p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.brochures {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.brochure-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: var(--secondary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
}

.brochure-btn:hover {
    background: #B54A00;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(198, 93, 7, 0.3);
}

/* Footer */
.footer {
    background: var(--text-color);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-title {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.footer-address,
.footer-contact {
    margin-bottom: 0.5rem;
    opacity: 1;
    color: var(--white);
    font-weight: 500;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-link {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-link:hover {
    opacity: 1;
    color: var(--primary-color);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
    opacity: 1;
    font-size: 0.95rem;
    color: var(--white);
    font-weight: 500;
}

.scroll-top {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .intro-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .goals-objectives-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .faculty-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 3rem 0;
    }
    
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--background-color);
        flex-direction: column;
        padding: 2rem;
        box-shadow: 0 10px 30px var(--shadow);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .tabs-nav {
        flex-direction: column;
        align-items: center;
    }
    
    .tab-button {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .brochures {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .brand-text {
        display: none;
    }
    
    .hero-content {
        padding: 0 1rem;
    }
    
    .tab-panel {
        padding: 2rem 1rem;
    }
    
    .goals-card,
    .objectives-card {
        padding: 1.5rem;
    }
    
    .faculty-card {
        padding: 1.5rem;
    }
}