/* ========================================
   CYBER SECURITY - ENHANCED MOBILE RESPONSIVE CSS
======================================== */

:root {
    --primary-color: #0A2540;
    --secondary-color: #00D4FF;
    --dark-color: #1E293B;
    --text-color: #475569;
    --light-bg: #F1F5F9;
    --white: #ffffff;
    --border-radius: 0.75rem;
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --box-shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* BASE STYLES - MOBILE FIRST */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; width: 100%; max-width: 100vw; }
body { font-family: 'Poppins', sans-serif; font-size: 16px; line-height: 1.6; color: var(--text-color); background: var(--white); overflow-x: hidden; width: 100%; max-width: 100vw; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
h1, h2, h3, h4, h5 { color: var(--dark-color); font-weight: 600; line-height: 1.2; margin-bottom: 1rem; }
h1 { font-size: 2.5rem; } h2 { font-size: 2rem; } h3 { font-size: 1.75rem; } h4 { font-size: 1.25rem; } h5 { font-size: 1.1rem; }
p { margin-bottom: 1rem; }

.container { width: 100%; max-width: 1320px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; overflow-x: hidden; width: 100%; }
.section-light { background-color: var(--light-bg); }

.section-header { text-align: center; margin-bottom: 60px; max-width: 800px; margin-left: auto; margin-right: auto; }
.section-subtitle { color: var(--secondary-color); font-weight: 600; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 0.5rem; }
.section-title { color: var(--dark-color); font-size: 2.5rem; font-weight: 700; margin-bottom: 1rem; }

.btn { display: inline-block; padding: 12px 30px; font-size: 1rem; font-weight: 600; text-align: center; border-radius: var(--border-radius); border: 2px solid transparent; cursor: pointer; transition: var(--transition); text-decoration: none; }
.btn-brand { background: linear-gradient(135deg, var(--primary-color), #0D3A5C); color: var(--white); border-color: var(--primary-color); }
.btn-brand:hover { transform: translateY(-2px); box-shadow: var(--box-shadow-lg); }
.btn-light { background: var(--white); color: var(--primary-color); border-color: var(--white); }
.btn-light:hover { background: transparent; color: var(--white); border-color: var(--white); }
.btn-lg { padding: 15px 40px; font-size: 1.1rem; }

/* NAVBAR - MOBILE FIXED */
.navbar { position: fixed; top: 0; left: 0; right: 0; width: 100%; background: var(--white); padding: 10px 0; z-index: 1000; transition: var(--transition); box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05); }
.navbar.scrolled { padding: 5px 0; box-shadow: var(--box-shadow); }
.navbar .container { display: flex; justify-content: space-between; align-items: center; width: 100%; }
.navbar-brand { display: flex; align-items: center; gap: 12px; font-size: 1.5rem; font-weight: 700; color: var(--primary-color); z-index: 1001; }
.navbar-brand img { width: 150px; height: 80px; object-fit: contain; }
.nav-menu { display: flex; align-items: center; gap: 30px; }
.nav-link { color: var(--dark-color); font-weight: 500; position: relative; }
.nav-link.active { color: var(--primary-color); }
.nav-link::after { content: ''; position: absolute; bottom: -5px; left: 0; width: 0; height: 2px; background: var(--secondary-color); transition: var(--transition); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: transparent; border: none; cursor: pointer; z-index: 1001; padding: 5px; }
.nav-toggle span { width: 25px; height: 3px; background: var(--primary-color); transition: var(--transition); border-radius: 3px; }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(8px, 8px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(7px, -7px); }

/* HERO SECTION */
.hero-section { position: relative; color: var(--white); padding: 180px 0 100px; margin-top: 0px; overflow: hidden; background: linear-gradient(135deg, rgba(10, 37, 64, 0.9) 0%, rgba(13, 58, 92, 0.85) 100%), url('../Image/Cyber1.avif') center center; background-size: cover; background-attachment: fixed; width: 100%; }
.hero-background { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%), radial-gradient(circle at 80% 80%, rgba(255, 107, 53, 0.1) 0%, transparent 50%); animation: backgroundFloat 20s ease-in-out infinite; pointer-events: none; }
@keyframes backgroundFloat { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(30px, -30px); } }
.hero-content { position: relative; z-index: 2; max-width: 900px; margin: 0 auto; text-align: center; opacity: 0; transform: translateY(40px); animation: fadeUp 1s ease forwards; }
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }
.hero-subtitle { color: var(--secondary-color); font-size: 0.9rem; font-weight: 600; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 1rem; }
.hero-title { color: var(--white); font-size: 3rem; font-weight: 700; line-height: 1.3; margin-bottom: 1.5rem; }
.hero-description { font-size: 1.2rem; line-height: 1.8; margin-bottom: 3rem; opacity: 0.95; }
.hero-facts { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; }
.fact-item { display: flex; align-items: center; gap: 15px; background: rgba(255, 255, 255, 0.1); padding: 20px 30px; border-radius: var(--border-radius); backdrop-filter: blur(10px); opacity: 0; transform: translateY(20px); animation: fadeUp 0.8s ease forwards; }
.fact-item:nth-child(1) { animation-delay: 0.3s; }
.fact-item:nth-child(2) { animation-delay: 0.4s; }
.fact-item:nth-child(3) { animation-delay: 0.5s; }
.fact-item i { font-size: 2rem; color: var(--secondary-color); }
.fact-text { display: flex; flex-direction: column; text-align: left; }
.fact-text strong { font-size: 0.9rem; font-weight: 600; color: var(--secondary-color); margin-bottom: 3px; }
.fact-text span { font-size: 1rem; color: var(--white); }

/* MASTERY GRID */
.mastery-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; width: 100%; }
.mastery-card { background: var(--white); padding: 40px 30px; border-radius: var(--border-radius); box-shadow: var(--box-shadow); text-align: center; transition: var(--transition); opacity: 0; transform: translateY(30px); }
.mastery-card:hover { transform: translateY(-10px); box-shadow: var(--box-shadow-lg); }
.mastery-icon { width: 80px; height: 80px; background: linear-gradient(135deg, var(--secondary-color), #00B8D4); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 25px; }
.mastery-icon i { font-size: 2rem; color: var(--white); }
.mastery-card h4 { font-size: 1.25rem; margin-bottom: 1rem; color: var(--dark-color); }
.mastery-card p { color: var(--text-color); line-height: 1.7; margin-bottom: 0; }

/* TECH GRID */
.tech-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 30px; max-width: 900px; margin: 0 auto; }
.tech-item { background: var(--white); padding: 30px 20px; border-radius: var(--border-radius); box-shadow: var(--box-shadow); text-align: center; transition: var(--transition); opacity: 0; transform: scale(0.8); }
.tech-item:hover { transform: translateY(-5px) scale(1); box-shadow: var(--box-shadow-lg); }
.tech-item img { width: 60px; height: 60px; margin: 0 auto 15px; object-fit: contain; }
.tech-item p { color: var(--dark-color); font-weight: 600; margin-bottom: 0; }

/* ACCORDION */
.curriculum-wrapper { max-width: 900px; margin: 0 auto; }
.accordion { display: flex; flex-direction: column; gap: 20px; }
.accordion-item { background: var(--white); border-radius: var(--border-radius); box-shadow: var(--box-shadow); overflow: hidden; transition: var(--transition); }
.accordion-header { width: 100%; padding: 25px 30px; background: var(--white); border: none; cursor: pointer; display: flex; align-items: center; gap: 20px; text-align: left; font-family: inherit; transition: var(--transition); }
.accordion-header:hover { background: var(--light-bg); }
.accordion-number { font-size: 1.5rem; font-weight: 700; color: var(--secondary-color); min-width: 40px; }
.accordion-title { flex: 1; font-size: 1.25rem; font-weight: 600; color: var(--dark-color); }
.accordion-icon { font-size: 1.2rem; color: var(--primary-color); transition: var(--transition); }
.accordion-item.active .accordion-icon { transform: rotate(180deg); }
.accordion-content { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.accordion-item.active .accordion-content { max-height: 500px; }
.accordion-content p { padding: 0 30px 30px 90px; color: var(--text-color); line-height: 1.8; margin-bottom: 0; }

/* PROJECT CARDS */
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; width: 100%; }
.project-card { background: var(--white); border-radius: var(--border-radius); box-shadow: var(--box-shadow); overflow: hidden; transition: var(--transition); opacity: 0; transform: translateY(30px); }
.project-card:hover { transform: translateY(-10px); box-shadow: var(--box-shadow-lg); }
.project-image { width: 100%; height: 200px; overflow: hidden; }
.project-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.project-card:hover .project-image img { transform: scale(1.1); }
.project-content { padding: 25px; }
.project-content h5 { font-size: 1.25rem; margin-bottom: 0.75rem; color: var(--dark-color); }
.project-content p { color: var(--text-color); line-height: 1.7; margin-bottom: 0; }

/* CAREER BADGES */
.careers-container { display: flex; justify-content: center; flex-wrap: wrap; gap: 15px; }
.career-badge { display: inline-block; padding: 12px 28px; background: linear-gradient(135deg, var(--primary-color), #0D3A5C); color: var(--white); border-radius: 50px; font-weight: 600; font-size: 1rem; transition: var(--transition); box-shadow: 0 4px 15px rgba(10, 37, 64, 0.2); }
.career-badge:hover { transform: translateY(-3px); box-shadow: 0 8px 25px rgba(10, 37, 64, 0.3); }

/* CTA SECTION */
.cta-section { background: linear-gradient(135deg, var(--primary-color), #0D3A5C); }
.cta-card { display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 50px; border-radius: var(--border-radius); background: rgba(255, 255, 255, 0.05); }
.cta-content h2 { color: var(--white); font-size: 2rem; margin-bottom: 1rem; }
.cta-content p { color: rgba(255, 255, 255, 0.9); font-size: 1.1rem; line-height: 1.7; margin-bottom: 0; }

/* FOOTER */
.footer { background: var(--dark-color); color: var(--white); padding: 60px 0 20px; width: 100%; overflow-x: hidden; }
.footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 40px; margin-bottom: 40px; width: 100%; }
.footer-section h5 { color: var(--white); font-size: 1.25rem; margin-bottom: 20px; }
.footer-section p { color: rgba(255, 255, 255, 0.8); line-height: 1.8; }
.footer-section ul li { margin-bottom: 10px; }
.footer-section ul li a { color: rgba(255, 255, 255, 0.8); transition: var(--transition); }
.footer-section ul li a:hover { color: var(--secondary-color); padding-left: 5px; }
.social-links { display: flex; gap: 15px; margin-top: 20px; flex-wrap: wrap; }
.social-links a { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: rgba(255, 255, 255, 0.1); border-radius: 50%; color: var(--white); transition: var(--transition); }
.social-links a:hover { background: var(--secondary-color); transform: translateY(-3px); }
.newsletter-form { display: flex; gap: 10px; margin-top: 15px; width: 100%; }
.newsletter-form input { flex: 1; padding: 12px 15px; border: none; border-radius: var(--border-radius); font-family: inherit; min-width: 0; }
.newsletter-form button { padding: 12px 20px; background: var(--secondary-color); color: var(--white); border: none; border-radius: var(--border-radius); cursor: pointer; transition: var(--transition); flex-shrink: 0; }
.newsletter-form button:hover { background: #00B8D4; }
.footer-bottom { text-align: center; padding-top: 30px; border-top: 1px solid rgba(255, 255, 255, 0.1); color: rgba(255, 255, 255, 0.6); }

/* RESPONSIVE - MOBILE FIRST */
@media (max-width: 991px) {
    .container { padding: 0 20px; }
    .nav-toggle { display: flex; }
    .nav-menu { position: fixed; top: 90px; right: -100%; width: 100%; max-width: 320px; height: calc(100vh - 90px); background: var(--white); flex-direction: column; align-items: flex-start; padding: 30px; box-shadow: var(--box-shadow-lg); transition: right 0.3s ease-in-out; overflow-y: auto; z-index: 999; }
    .nav-menu.active { right: 0; }
    .nav-item { width: 100%; margin-bottom: 10px; }
    .nav-link { display: block; padding: 10px 0; width: 100%; }
    .nav-item .btn { width: 100%; text-align: center; margin-top: 10px; }
    .navbar-brand img { width: 130px; height: 70px; }
    .hero-section { padding: 140px 0 80px; background-attachment: scroll; }
    .hero-title { font-size: 2.2rem; }
    .section { padding: 60px 0; }
    .section-title { font-size: 2rem; }
    .mastery-grid { grid-template-columns: repeat(2, 1fr); gap: 25px; }
    .tech-grid { grid-template-columns: repeat(3, 1fr); gap: 25px; }
    .projects-grid { grid-template-columns: 1fr; gap: 25px; }
    .accordion-content p { padding: 0 30px 30px 30px; }
    .cta-card { flex-direction: column; text-align: center; padding: 40px 30px; }
}

@media (max-width: 767px) {
    * { max-width: 100%; }
    .container { padding: 0 15px; }
    .section { padding: 50px 0; }
    .navbar-brand img { width: 120px; height: 60px; }
    .hero-section { padding: 120px 0 60px; background-attachment: scroll; }
    .hero-title { font-size: 1.8rem; }
    .hero-description { font-size: 1rem; }
    .hero-facts { gap: 20px; }
    .fact-item { padding: 15px 20px; }
    .section-title { font-size: 1.75rem; }
    .mastery-grid { grid-template-columns: 1fr; gap: 20px; }
    .tech-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .accordion-header { padding: 20px; }
    .accordion-number { font-size: 1.25rem; min-width: 35px; }
    .accordion-title { font-size: 1.1rem; }
    .accordion-content p { padding: 0 20px 20px 20px; }
    .footer-content { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 480px) {
    .container { padding: 0 12px; }
    .navbar-brand img { width: 100px; height: 50px; }
    .hero-section { padding: 100px 0 50px; }
    .hero-title { font-size: 1.5rem; }
    .hero-facts { flex-direction: column; }
    .section { padding: 40px 0; }
    .section-title { font-size: 1.5rem; }
    .tech-item img { width: 50px; height: 50px; }
    .newsletter-form { flex-direction: column; }
    .newsletter-form input, .newsletter-form button { width: 100%; }
    .social-links { gap: 12px; }
    .social-links a { width: 36px; height: 36px; font-size: 0.9rem; }
}