/* ============================================
   HUSTLEHIVE - CSS STYLESHEET
   Professional Tech Community Website
   ============================================ */

/* Root Variables - Light Mode */
:root {
    --primary-color: #007BFF;
    --primary-dark: #0056b3;
    --secondary-color: #6c757d;
    --bg-color: #ffffff;
    --text-color: #212529;
    --text-light: #6c757d;
    --border-color: #dee2e6;
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow-md: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    --transition: all 0.3s ease;
    --radius: 8px;
    --radius-lg: 12px;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --text-light: #b0b0b0;
    --border-color: #333333;
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.3);
    --shadow-md: 0 0.5rem 1rem rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.5);
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    margin-bottom: 1rem;
}

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

a:hover {
    color: var(--primary-dark);
}

button {
    cursor: pointer;
    border: none;
    font-family: inherit;
    transition: var(--transition);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   ANNOUNCEMENT BANNER - HIDDEN
   ============================================ */

.announcement-banner {
    display: none;
}

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

.navbar {
    background-color: var(--bg-color);
    padding: 15px 0;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 999;
    border-bottom: 1px solid var(--border-color);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 800;
    color: var(--primary-color);
    font-family: 'Montserrat', sans-serif;
}

.logo i {
    font-size: 28px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
}

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    gap: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-color);
        flex-direction: column;
        gap: 15px;
        padding: 20px;
        display: none;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
    }

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

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

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

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(8px, -8px);
    }
}

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

.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    overflow: hidden;
}

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

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

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
}

.hero-content {
    z-index: 1;
    max-width: 800px;
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: clamp(32px, 8vw, 64px);
    font-weight: 800;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: clamp(16px, 3vw, 24px);
    margin-bottom: 40px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    font-weight: 300;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

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

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

.btn {
    padding: 12px 30px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    display: inline-block;
    border: 2px solid transparent;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: white;
    border-color: white;
}

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

.btn-small {
    padding: 8px 16px;
    font-size: 12px;
}

/* ============================================
   SECTION STYLING
   ============================================ */

section {
    padding: 80px 20px;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 42px;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
    border-radius: 2px;
}

.subtitle {
    font-size: 18px;
    color: var(--text-light);
    font-weight: 400;
}

/* ============================================
   MISSION SECTION
   ============================================ */

.mission {
    background: var(--bg-color);
}

.mission-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.mission-card {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 40px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .mission-card {
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.8), rgba(0, 86, 179, 0.8));
}

.mission-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.mission-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.mission-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.mission-card p {
    font-size: 14px;
    line-height: 1.8;
}

/* ============================================
   COUNTERS SECTION
   ============================================ */

.counters {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 80px 20px;
}

.counters .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

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

.counter-number {
    font-size: 48px;
    font-weight: 800;
    font-family: 'Montserrat', sans-serif;
    display: block;
    margin-bottom: 10px;
}

.counter-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.counter-card i {
    font-size: 36px;
    opacity: 0.8;
}

/* ============================================
   EVENTS SECTION
   ============================================ */

.events {
    background: var(--bg-color);
}

/* Countdown Timer */


/* Events Grid */
.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.event-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    position: relative;
}

.event-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.event-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--primary-color);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    z-index: 10;
}

.event-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.event-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.event-card:hover .event-img {
    transform: scale(1.05);
}

.event-content {
    padding: 25px;
}

.event-content h3 {
    margin-bottom: 15px;
    font-size: 20px;
}

.event-meta {
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 15px;
}

.event-meta span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.event-location {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* ============================================
   EVENT AGENDA SECTION
   ============================================ */

.event-agenda {
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.05), rgba(0, 86, 179, 0.05));
    padding: 80px 20px;
}

.agenda-items {
    display: grid;
    gap: 20px;
    margin-top: 40px;
}

.agenda-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 30px;
    padding: 25px;
    background: var(--bg-color);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.agenda-time {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 14px;
    text-transform: uppercase;
}

.agenda-content h4 {
    font-size: 18px;
    margin-bottom: 8px;
}

.speaker-role {
    background: rgba(0, 123, 255, 0.1);
    color: var(--primary-color);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

@media (max-width: 768px) {
    .agenda-item {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}

/* ============================================
   ANNOUNCEMENTS SECTION
   ============================================ */

.announcements {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 40px 20px;
    overflow: hidden;
}

.announcements h3 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 28px;
}

/* ============================================
   GALLERY SECTION
   ============================================ */

.gallery {
    background: var(--bg-color);
    padding: 80px 20px;
}

.gallery-filters {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-color);
    padding: 10px 20px;
    border-radius: 20px;
    font-weight: 600;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    aspect-ratio: 1;
    cursor: pointer;
    box-shadow: var(--shadow-md);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 123, 255, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-btn {
    background: white;
    color: var(--primary-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: var(--transition);
}

.gallery-btn:hover {
    transform: scale(1.1);
}

/* ============================================
   LIGHTBOX
   ============================================ */

.lightbox {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    animation: fadeIn 0.3s ease;
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-image {
    max-width: 90%;
    max-height: 90vh;
    object-fit: contain;
    animation: zoomIn 0.3s ease;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: white;
    cursor: pointer;
    transition: var(--transition);
}

.lightbox-close:hover {
    color: var(--primary-color);
}

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

@keyframes zoomIn {
    from {
        transform: scale(0.8);
    }
    to {
        transform: scale(1);
    }
}

/* ============================================
   NEWSLETTER SECTION
   ============================================ */

.newsletter {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 80px 20px;
    text-align: center;
}

.newsletter-content h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.newsletter-content p {
    font-size: 16px;
    margin-bottom: 30px;
}

.newsletter-form {
    display: flex;
    gap: 10px;
    max-width: 500px;
    margin: 0 auto 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.newsletter-form input {
    flex: 1;
    min-width: 250px;
    padding: 14px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
}

.form-note {
    font-size: 12px;
    opacity: 0.9;
}

/* ============================================
   JOIN/CONTACT FORM SECTION
   ============================================ */

.join-section {
    background: var(--bg-color);
    padding: 80px 20px;
}

.join-form {
    max-width: 600px;
    margin: 50px auto 0;
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.05), rgba(0, 86, 179, 0.05));
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 14px;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 10px;
}

.checkbox-group input {
    width: auto;
}

.thank-you-message {
    text-align: center;
    padding: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: var(--radius-lg);
    animation: fadeInUp 0.5s ease;
}

.thank-you-message i {
    font-size: 48px;
    margin-bottom: 15px;
    display: block;
}

.thank-you-message h3 {
    margin-bottom: 10px;
    color: white;
}

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

.footer {
    background: #1a1a1a;
    color: #e0e0e0;
    padding: 60px 20px 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    color: white;
    margin-bottom: 15px;
    font-size: 18px;
}

.footer-tagline {
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 10px;
}

.footer-description {
    font-size: 14px;
    line-height: 1.8;
    color: #b0b0b0;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: #b0b0b0;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.social-links {
    display: flex;
    gap: 15px;
    font-size: 20px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(0, 123, 255, 0.1);
    color: var(--primary-color);
    border-radius: 50%;
    transition: var(--transition);
}

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

.footer-stats {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.stat-number {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary-color);
    font-family: 'Montserrat', sans-serif;
}

.stat-label {
    font-size: 12px;
    color: #b0b0b0;
    text-transform: uppercase;
}

.footer-bottom {
    border-top: 1px solid #333333;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    font-size: 12px;
}

@media (max-width: 768px) {
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
    }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    section {
        padding: 50px 20px;
    }

    .section-title h2 {
        font-size: 32px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .mission-content {
        grid-template-columns: 1fr;
    }

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

    .countdown {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }

    .join-form {
        padding: 25px;
    }

    .nav-links {
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 24px;
    }

    .section-title h2 {
        font-size: 24px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 12px;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .newsletter-form input {
        min-width: 100%;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .social-links {
        justify-content: center;
    }
}

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

.hidden {
    display: none;
}

.visible {
    display: block;
}