/* ========================================
   GeoQR Landing Page Styles
   Premium Modern Design
   ======================================== */

/* ========================================
   Landing Page Body
   ======================================== */
.landing-page {
    overflow-x: hidden;
}

/* ========================================
   Navigation
   ======================================== */
.landing-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-4) 0;
    transition: all var(--transition-normal);
}

.landing-nav.scrolled {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: var(--space-3) 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-links {
    display: flex;
    gap: var(--space-8);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

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

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

.nav-actions {
    display: flex;
    gap: var(--space-3);
}

.nav-actions .btn {
    padding: var(--space-2) var(--space-5);
    font-size: 0.9rem;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(20px);
    padding: var(--space-6);
    flex-direction: column;
    gap: var(--space-4);
    border-bottom: 1px solid var(--glass-border);
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition-normal);
    z-index: 999;
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
}

.mobile-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border-color);
    transition: color var(--transition-fast);
}

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

.mobile-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-top: var(--space-4);
}

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

/* ========================================
   Hero Section
   ======================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(80px + var(--space-16)) var(--space-6) var(--space-16);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--primary-400);
    margin-bottom: var(--space-6);
    animation: fadeInUp 0.6s ease-out;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.2); }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-4);
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-description {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto var(--space-8);
    line-height: 1.7;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.hero-visual {
    display: flex;
    justify-content: center;
    animation: fadeInUp 0.8s ease-out 0.5s both;
}

.hero-card {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
}

.qr-preview {
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--space-4);
    border: 1px solid var(--glass-border);
}

.qr-preview svg {
    width: 100%;
    height: 100%;
}

.hero-card-content {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.pulse-dot {
    width: 10px;
    height: 10px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
    box-shadow: 0 0 10px var(--success);
}

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

/* ========================================
   Section Common Styles
   ======================================== */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-badge {
    display: inline-block;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    padding: var(--space-1) var(--space-4);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   Features Section
   ======================================== */
.features-section {
    padding: var(--space-16) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.feature-card {
    padding: var(--space-8);
    text-align: center;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
}

.feature-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-500);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--space-5);
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 30px;
    height: 30px;
    color: white;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--space-3);
}

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

/* ========================================
   How It Works Section
   ======================================== */
.how-it-works-section {
    padding: var(--space-16) 0;
    background: linear-gradient(180deg, transparent 0%, rgba(99, 102, 241, 0.03) 50%, transparent 100%);
}

.steps-container {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.step-card {
    flex: 0 1 200px;
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
}

.step-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.step-number {
    width: 40px;
    height: 40px;
    margin: 0 auto var(--space-4);
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    color: white;
}

.step-content {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
}

.step-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--space-4);
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon svg {
    width: 24px;
    height: 24px;
    color: var(--primary-400);
}

.step-content h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.step-content p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.step-connector {
    display: flex;
    align-items: center;
    padding-top: 60px;
    color: var(--primary-400);
    opacity: 0.5;
}

.step-connector svg {
    width: 24px;
    height: 24px;
}

/* ========================================
   Roles Section
   ======================================== */
.roles-section {
    padding: var(--space-16) 0;
}

.roles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    align-items: start;
}

.role-card {
    padding: var(--space-8);
    text-align: center;
    position: relative;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
}

.role-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.role-card:hover {
    transform: translateY(-5px);
}

.role-card.featured {
    border-color: var(--primary-500);
    box-shadow: var(--shadow-glow);
}

.role-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    padding: var(--space-1) var(--space-4);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.role-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--space-5);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.role-icon.student {
    background: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
}

.role-icon.admin {
    background: var(--gradient-primary);
}

.role-icon.device {
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
}

.role-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.role-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-3);
}

.role-card > p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: var(--space-5);
}

.role-features {
    list-style: none;
    text-align: left;
}

.role-features li {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: var(--space-2) 0;
}

.role-features li svg {
    width: 16px;
    height: 16px;
    color: var(--success);
    flex-shrink: 0;
}

/* ========================================
   Tech Section
   ======================================== */
.tech-section {
    padding: var(--space-16) 0;
    background: linear-gradient(180deg, transparent 0%, rgba(99, 102, 241, 0.03) 50%, transparent 100%);
}

.tech-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-6);
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-6);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    min-width: 120px;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(20px);
}

.tech-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.tech-item:hover {
    transform: translateY(-3px);
    border-color: var(--primary-500);
}

.tech-icon {
    width: 40px;
    height: 40px;
    color: var(--primary-400);
}

.tech-icon svg {
    width: 100%;
    height: 100%;
}

.tech-item span {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    padding: var(--space-16) 0;
}

.cta-card {
    padding: var(--space-12);
    text-align: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.cta-card h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    margin-bottom: var(--space-3);
}

.cta-card p {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: var(--space-8);
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

/* ========================================
   Footer
   ======================================== */
.landing-footer {
    padding: var(--space-16) 0 var(--space-8);
    border-top: 1px solid var(--border-color);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.footer-main {
    display: flex;
    justify-content: space-between;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: var(--space-4);
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.footer-links {
    display: flex;
    gap: var(--space-12);
}

.footer-column h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-column a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    padding: var(--space-2) 0;
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--primary-400);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-bottom .disclaimer {
    font-size: 0.75rem;
    color: var(--text-disabled);
    margin-top: var(--space-2);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .features-grid,
    .roles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps-container {
        gap: var(--space-6);
    }
    
    .step-connector {
        display: none;
    }
    
    .step-card {
        flex: 0 1 calc(50% - var(--space-3));
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu {
        display: flex;
    }
    
    .hero-section {
        padding-top: calc(70px + var(--space-12));
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-actions .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .features-grid,
    .roles-grid {
        grid-template-columns: 1fr;
    }
    
    .step-card {
        flex: 0 1 100%;
    }
    
    .footer-main {
        flex-direction: column;
        gap: var(--space-8);
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: var(--space-8);
    }
    
    .footer-column {
        flex: 0 1 calc(50% - var(--space-4));
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-actions .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .tech-grid {
        gap: var(--space-4);
    }
    
    .tech-item {
        min-width: 100px;
        padding: var(--space-4);
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 var(--space-4);
    }
    
    .section-container {
        padding: 0 var(--space-4);
    }
    
    .feature-card,
    .role-card,
    .step-content {
        padding: var(--space-6);
    }
    
    .cta-card {
        padding: var(--space-8);
    }
    
    .footer-column {
        flex: 0 1 100%;
    }
}