:root {
    --primary-color: #00d4ff;
    --secondary-color: #0099ff;
    --accent-color: #ff6b35;
    --dark-bg: #0a0e27;
    --darker-bg: #050812;
    --card-bg: #141b3a;
    --text-primary: #ffffff;
    --text-secondary: #b4b4b4;
    --border-color: #1e2749;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html, body {
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: var(--font-body);
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
}

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

/* ===================================
   NAVIGATION
   =================================== */

.navbar {
    background: rgba(5, 8, 18, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 2px solid var(--primary-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.school-logo {
    height: 45px;
    width: 45px;
    border-radius: 50%;
}

.logo-main {
    font-family: var(--font-heading);
    font-weight: 800;
    color: var(--primary-color);
    font-size: 1.2rem;
    letter-spacing: 1px;
    display: block;
}

.logo-sub {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    padding: 5px;
    margin-left: auto;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    display: block;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    transition: var(--transition);
    position: relative;
    white-space: nowrap;
}

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

/* ===================================
   HERO / PAGE HEADING
   =================================== */

.page-heading {
    padding: 6rem 2rem;
    text-align: center;
    background: radial-gradient(circle at center, var(--card-bg) 0%, var(--darker-bg) 100%);
    border-bottom: 1px solid var(--border-color);
}

.heading-title {
    font-family: var(--font-heading);
    font-size: 4rem;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.school-name {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.heading-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    letter-spacing: 2px;
}

/* ===================================
   SHARED SECTION CONTAINER
   =================================== */

.section-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.section-title {
    font-family: var(--font-heading);
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
}

/* ===================================
   INTRODUCTION SECTION
   =================================== */

.introduction-section {
    background: var(--card-bg);
    margin: 2rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.intro-label {
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 0.8rem;
}

.intro-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--text-primary);
    margin: 0.5rem 0 2rem;
    line-height: 1.2;
}

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

.content-image {
    width: 100%;
    border-radius: 15px;
    border: 2px solid var(--border-color);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
}

.intro-paragraph {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.8;
}

/* ===================================
   OBJECTIVES SECTION
   =================================== */

.objectives-card {
    background: rgba(20, 27, 58, 0.5);
    padding: 3rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.objectives-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    list-style: none;
}

.objective-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--darker-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    align-items: flex-start;
}

.objective-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.2);
}

.objective-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

/* ===================================
   COMPETITIONS SECTION
   =================================== */

.competitions-section {
    background: var(--darker-bg);
}

.competitions-title {
    font-family: var(--font-heading);
    text-align: center;
    font-size: 1.5rem;
    color: var(--text-primary);
    font-style: italic;
    margin-bottom: 3rem;
}

.competitions-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}

.competition-card {
    width: calc(33.333% - 1.34rem);
    min-width: 280px;
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.competition-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
}

.competition-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

.competition-overlay {
    position: absolute;
    inset: 0;
    background: rgba(5, 8, 18, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.competition-card:hover .competition-overlay {
    opacity: 1;
}

.competition-label {
    font-family: var(--font-heading);
    color: var(--primary-color);
    font-weight: 700;
    letter-spacing: 2px;
    text-align: center;
    padding: 0 1rem;
}

.competition-content {
    padding: 1.5rem;
}

.competition-name {
    font-family: var(--font-heading);
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.competition-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.competition-feature {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.feature-badge {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.7rem;
    text-transform: uppercase;
}

/* CTA */
.competitions-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 3rem;
}

.cta-text {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    text-decoration: none;
    border-radius: 5px;
    font-family: var(--font-heading);
    font-weight: 600;
    transition: var(--transition);
}

.cta-button:hover {
    background: var(--primary-color);
    color: var(--darker-bg);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

/* ===================================
   ORGANIZING BODY SECTION
   =================================== */

.organizing-card {
    background: linear-gradient(135deg, var(--card-bg) 0%, var(--darker-bg) 100%);
    padding: 4rem;
    border-radius: 20px;
    text-align: center;
    border: 1px solid var(--primary-color);
}

.organizing-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
}

.organizing-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.org-group {
    padding: 1rem;
}

.org-subtitle {
    font-family: var(--font-heading);
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.org-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.quote-text {
    color: var(--text-primary);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.contact-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    text-decoration: none;
    border-radius: 5px;
    font-family: var(--font-heading);
    font-weight: 600;
    transition: var(--transition);
    margin-top: 1rem;
}

.contact-button:hover {
    background: var(--primary-color);
    color: var(--darker-bg);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

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

.footer {
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    background: var(--darker-bg);
}

/* ===================================
   ANIMATIONS
   =================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* ===================================
   RESPONSIVE — LARGE TABLETS (1024px)
   =================================== */

@media (max-width: 1024px) {
    .competition-card {
        width: calc(50% - 1rem);
    }

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

    .organizing-card {
        padding: 3rem 2rem;
    }
}

/* ===================================
   RESPONSIVE — TABLETS (768px)
   =================================== */

@media (max-width: 768px) {
    /* Hamburger nav */
    .hamburger {
        display: flex;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        background: rgba(5, 8, 18, 0.98);
        padding: 1rem 0;
        gap: 0;
        border-top: 1px solid var(--border-color);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-link {
        display: block;
        padding: 0.75rem 2rem;
        border-bottom: 1px solid var(--border-color);
        font-size: 1rem;
    }

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

    /* Hero */
    .heading-title {
        font-size: 2.5rem;
    }

    .school-name {
        font-size: 1.2rem;
    }

    .heading-subtitle {
        font-size: 0.95rem;
        letter-spacing: 1px;
    }

    .page-heading {
        padding: 4rem 1.5rem;
    }

    /* Introduction */
    .introduction-section {
        margin: 1rem;
    }

    .intro-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .intro-title {
        font-size: 2rem;
    }

    /* Objectives */
    .objectives-list {
        grid-template-columns: 1fr;
    }

    .objectives-card {
        padding: 1.5rem;
    }

    /* Competitions */
    .competition-card {
        width: 100%;
        min-width: unset;
    }

    .competitions-title {
        font-size: 1.2rem;
    }

    /* Organizing */
    .organizing-content {
        grid-template-columns: 1fr;
    }

    .organizing-card {
        padding: 2rem 1.5rem;
    }

    .organizing-title {
        font-size: 2rem;
    }

    /* Section title */
    .section-title {
        font-size: 2rem;
    }

    .section-container {
        padding: 3rem 1.5rem;
    }
}

/* ===================================
   RESPONSIVE — MOBILE (480px)
   =================================== */

@media (max-width: 480px) {
    .heading-title {
        font-size: 1.8rem;
    }

    .school-name {
        font-size: 1rem;
    }

    .heading-subtitle {
        font-size: 0.85rem;
        letter-spacing: 0.5px;
    }

    .page-heading {
        padding: 3rem 1rem;
    }

    .nav-container {
        padding: 0.8rem 1rem;
    }

    .logo-main {
        font-size: 1rem;
    }

    .logo-sub {
        font-size: 0.7rem;
    }

    .school-logo {
        height: 38px;
        width: 38px;
    }

    .intro-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .organizing-title {
        font-size: 1.5rem;
    }

    .objectives-card {
        padding: 1rem;
    }

    .objective-item {
        padding: 1rem;
        gap: 1rem;
    }

    .objective-icon {
        font-size: 1.5rem;
    }

    .section-container {
        padding: 2rem 1rem;
    }

    .introduction-section {
        margin: 0.75rem;
    }

    .organizing-card {
        padding: 1.5rem 1rem;
    }

    .cta-button,
    .contact-button {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .competition-image {
        height: 160px;
    }
}

/* ===================================
   RESPONSIVE — EXTRA SMALL (360px)
   =================================== */

@media (max-width: 360px) {
    .heading-title {
        font-size: 1.5rem;
    }

    .logo-main {
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.3rem;
    }
}