/* ASSOCIATION FOR COMPUTING MACHINERY - Website Styles */
/* Color Scheme: Primary #0f2d4a, Secondary #00b4d8, Accent #e0f7fa */

:root {
    --primary: #0f2d4a;
    --secondary: #00b4d8;
    --accent: #e0f7fa;
    --dark: #071a2e;
    --text: #2c2c2c;
    --text-light: #6b6b6b;
    --white: #ffffff;
    --border: #e0e0e0;
    --shadow: 0 4px 20px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.15);
    --radius: 12px;
    --radius-sm: 6px;
    --transition: all 0.3s ease;
    --font-heading: 'Roboto', serif;
    --font-body: 'Source Sans Pro', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--text);
    background: var(--white);
    line-height: 1.7;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
    font-family: var(--font-heading);
    line-height: 1.25;
    color: var(--dark);
}

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

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* BUTTONS */
.btn-primary {
    background: var(--primary);
    color: var(--white);
    border: none;
    padding: 12px 28px;
    border-radius: 50px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.3px;
}

.btn-primary:hover {
    background: var(--dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

.btn-large {
    padding: 15px 36px;
    font-size: 1rem;
}

.btn-full {
    width: 100%;
    text-align: center;
}

.btn-hero-primary {
    background: var(--primary);
    color: var(--white);
    border: 2px solid var(--primary);
    padding: 15px 36px;
    border-radius: 50px;
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

.btn-hero-primary:hover {
    background: var(--dark);
    border-color: var(--dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.25);
}

.btn-hero-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.8);
    padding: 15px 36px;
    border-radius: 50px;
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-block;
}

.btn-hero-secondary:hover {
    background: rgba(255,255,255,0.15);
    border-color: var(--white);
    color: var(--white);
}

/* HEADER */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    transition: var(--transition);
}

.site-header.scrolled {
    box-shadow: 0 4px 30px rgba(0,0,0,0.12);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

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

.logo-icon {
    color: var(--primary);
    font-size: 1.4rem;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--dark);
    line-height: 1.2;
    max-width: 220px;
}

.desktop-nav {
    display: flex;
    gap: 32px;
    align-items: center;
}

.desktop-nav a {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text);
    position: relative;
    padding-bottom: 4px;
}

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

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

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* HERO SECTION */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 72px;
}

.hero-bg-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #071a2eee 0%, #0f2d4acc 60%, #0f2d4a88 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 24px;
    max-width: 720px;
    margin-left: 10%;
}

.hero-badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.4);
    color: var(--white);
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 24px;
    backdrop-filter: blur(5px);
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    color: var(--white);
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
    font-weight: 800;
}

.hero-desc {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.9);
    margin-bottom: 36px;
    max-width: 560px;
    line-height: 1.7;
}

.hero-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* SECTION LABELS */
.section-label {
    display: inline-block;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-header h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.05rem;
    color: var(--text-light);
    max-width: 560px;
    margin: 0 auto;
}

/* ABOUT SECTION */
.about-section {
    padding: 100px 0;
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.about-text h2 {
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    margin-bottom: 20px;
}

.about-desc {
    font-size: 1.05rem;
    color: var(--text-light);
    margin-bottom: 36px;
    line-height: 1.8;
}

.mission-vision {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 28px;
}

.mv-card {
    background: var(--accent);
    border-left: 4px solid var(--primary);
    padding: 20px;
    border-radius: var(--radius-sm);
}

.mv-icon {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.mv-card h4 {
    font-size: 1rem;
    color: var(--primary);
    margin-bottom: 8px;
}

.mv-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

.why-box {
    background: var(--accent);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--border);
}

.why-box h4 {
    color: var(--primary);
    margin-bottom: 10px;
    font-size: 1.05rem;
}

.why-box p {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.7;
}

.about-images {
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.about-img-main {
    width: 100%;
    height: 320px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

.about-img-secondary {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* EVENTS SECTION */
.events-section {
    padding: 100px 0;
    background: var(--accent);
}

.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 64px;
}

.event-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid var(--primary);
}

.event-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.event-date {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.5px;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.event-card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
    color: var(--dark);
}

.event-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

.events-bottom {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.events-img-wrap img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

.involvement-info h3 {
    font-size: 1.8rem;
    margin-bottom: 28px;
    color: var(--dark);
}

.involve-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 24px;
}

.involve-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.involve-item h4 {
    font-size: 1rem;
    color: var(--primary);
    margin-bottom: 4px;
}

.involve-item p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* CONTACT SECTION */
.contact-section {
    padding: 100px 0;
    background: var(--white);
}

.contact-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-info-block h2 {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    margin-bottom: 16px;
}

.contact-info-block p {
    font-size: 1.05rem;
    color: var(--text-light);
    margin-bottom: 28px;
    line-height: 1.7;
}

.contact-img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.inline-contact-form {
    background: var(--accent);
    padding: 36px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.inline-contact-form h3 {
    font-size: 1.4rem;
    margin-bottom: 24px;
    color: var(--dark);
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text);
    background: var(--white);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px #0f2d4a22;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* FOOTER */
.site-footer {
    background: var(--dark);
    color: rgba(255,255,255,0.85);
    padding-top: 60px;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px 48px;
    display: grid;
    grid-template-columns: 2fr 1.5fr 1fr;
    gap: 48px;
}

.footer-col h4 {
    font-family: var(--font-heading);
    color: var(--white);
    font-size: 1.05rem;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}

.footer-org-name {
    font-size: 1.1rem !important;
    color: var(--white) !important;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-address {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 8px;
    color: rgba(255,255,255,0.75);
}

.footer-contact-name {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.75);
    margin-bottom: 8px;
    font-weight: 600;
}

.footer-email {
    font-size: 1.15rem;
    color: var(--secondary) !important;
    font-weight: 700;
    word-break: break-all;
    display: block;
    margin-top: 4px;
}

.footer-email:hover {
    color: var(--white) !important;
    text-decoration: underline;
}

.legal-badge {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.9);
    margin-bottom: 10px;
    font-weight: 600;
}

.ein-number {
    font-size: 1rem;
    color: var(--white);
    font-weight: 700;
    margin-bottom: 10px;
    font-family: monospace;
    letter-spacing: 0.5px;
}

.legal-note {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.55);
    line-height: 1.5;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: rgba(255,255,255,0.75);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 4px;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.55);
}

.footer-bottom a {
    color: rgba(255,255,255,0.7);
}

.scroll-top {
    background: var(--primary);
    color: var(--white);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.4rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.scroll-top:hover {
    background: var(--white);
    color: var(--primary);
}

/* MODALS */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 2000;
    backdrop-filter: blur(4px);
}

.modal-overlay.active {
    display: block;
}

.modal {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    z-index: 2001;
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    width: 90%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    transition: transform 0.3s ease, opacity 0.3s ease;
    opacity: 0;
}

.modal.active {
    display: block;
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

.modal h2 {
    font-size: 1.6rem;
    margin-bottom: 12px;
    color: var(--dark);
}

.modal p {
    color: var(--text-light);
    margin-bottom: 24px;
    font-size: 0.95rem;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--text-light);
    line-height: 1;
    padding: 4px 8px;
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--accent);
    color: var(--dark);
}

/* MOBILE MENU */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    width: 300px;
    height: 100vh;
    background: var(--white);
    z-index: 2001;
    padding: 80px 32px 40px;
    box-shadow: -10px 0 40px rgba(0,0,0,0.2);
    transform: translateX(100%);
    transition: transform 0.35s ease;
    flex-direction: column;
    gap: 24px;
}

.mobile-menu.active {
    display: flex;
    transform: translateX(0);
}

.mobile-logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    color: var(--dark);
    margin-bottom: 8px;
    line-height: 1.3;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 24px;
}

.mobile-nav a {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.mobile-nav a:hover {
    color: var(--primary);
    padding-left: 8px;
}

/* THANK YOU MODAL */
.thankyou-modal {
    text-align: center;
}

.thankyou-icon {
    width: 70px;
    height: 70px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

/* RESPONSIVE */
@media (max-width: 992px) {
    .about-grid,
    .events-bottom,
    .contact-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-inner {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-col-3 {
        grid-column: span 2;
    }
    
    .mission-vision {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-content {
        margin-left: 0;
        max-width: 100%;
        padding: 60px 24px;
    }
    
    .hero-btns {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-col-3 {
        grid-column: span 1;
    }
    
    .about-section,
    .events-section,
    .contact-section {
        padding: 70px 0;
    }
    
    .events-grid {
        grid-template-columns: 1fr;
    }
    
    .inline-contact-form {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .modal {
        padding: 28px 20px;
    }
    
    .logo-text {
        font-size: 0.85rem;
        max-width: 160px;
    }
}