/* ========================================
   PMB STAIRAYA - Landing Page Styles
   ======================================== */

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

html {
    scroll-behavior: smooth;
}

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

/* Navbar */
nav {
    position: fixed;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

@media (prefers-color-scheme: dark) {
    nav {
        background: rgba(10, 14, 26, 0.9) !important;
        border-bottom: 1px solid var(--border-light);
    }
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--primary-600);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-login {
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.btn-login:hover {
    color: var(--primary-600);
}

.btn-register {
    padding: 0.5rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
}

.btn-register:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.mobile-menu-btn {
    display: none;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.mobile-menu-btn:hover {
    background: var(--bg-secondary);
}

.mobile-menu-btn svg {
    width: 1.5rem;
    height: 1.5rem;
}

.mobile-menu {
    display: none;
    background: white;
    border-top: 1px solid var(--border-light);
}

.mobile-menu.active {
    display: block;
}

.mobile-menu-content {
    padding: 0.5rem 1rem 1rem;
}

.mobile-menu-content a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.mobile-menu-content a:hover {
    background: var(--primary-50);
    color: var(--primary-600);
}

.mobile-menu-content .btn-register {
    display: block;
    text-align: center;
    margin-top: 0.5rem;
}

/* Hero Section */
.hero-section {
    padding-top: 5rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--bg-primary) 50%, var(--secondary-50) 100%);
}

@media (prefers-color-scheme: dark) {
    .hero-section {
        background: linear-gradient(135deg, #1a1f35 0%, #0a0e1a 50%, #1a1f35 100%) !important;
    }
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    padding: 5rem 0;
}

.hero-content {
    animation: fadeIn 1s ease-out;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: #e0e7ff !important;
    color: #4c51bf !important;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: var(--font-weight-extrabold);
    color: #0f172a;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

@media (prefers-color-scheme: dark) {
    .hero-title {
        color: #f8fafc !important;
    }
}

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

.hero-description {
    font-size: 1.25rem;
    color: #475569;
    line-height: 1.8;
    margin-bottom: 2rem;
}

@media (prefers-color-scheme: dark) {
    .hero-description {
        color: #cbd5e1 !important;
    }
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn-primary {
    padding: 1rem 2rem;
    background: var(--gradient-primary) !important;
    color: white !important;
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-semibold);
    font-size: 1.125rem;
    transition: all var(--transition-base);
    text-align: center;
}

.btn-primary:hover {
    box-shadow: var(--shadow-2xl);
    transform: translateY(-4px);
}

.btn-secondary {
    padding: 1rem 2rem;
    background: white !important;
    color: var(--text-secondary) !important;
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-semibold);
    font-size: 1.125rem;
    border: 2px solid var(--border-light);
    transition: all var(--transition-base);
    text-align: center;
}

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

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    padding-top: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
}

.stat-value.blue { color: var(--primary-600); }
.stat-value.purple { color: var(--accent-purple); }
.stat-value.green { color: var(--success-600); }

.stat-label {
    font-size: 0.875rem;
    color: #475569 !important;
    margin-top: 0.25rem;
}

.hero-image {
    position: relative;
}

.hero-image-container {
    position: relative;
    z-index: 10;
    background: linear-gradient(135deg, var(--primary-100) 0%, var(--secondary-100) 100%);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    padding: 2rem;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image-icon {
    width: 12rem;
    height: 12rem;
    color: var(--primary-600);
    opacity: 1;
}

.blob {
    position: absolute;
    width: 18rem;
    height: 18rem;
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.7;
    animation: blob 7s infinite;
}

.blob-1 {
    top: -1rem;
    right: -1rem;
    background: var(--secondary-300);
    animation-delay: 0s;
}

.blob-2 {
    bottom: -2rem;
    left: -1rem;
    background: var(--primary-300);
    animation-delay: 2s;
}

/* About Section */
.section {
    padding: 5rem 0;
}

.section-white {
    background: white;
}

.section-gray {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, white 100%);
}

@media (prefers-color-scheme: dark) {
    .section-white {
        background: #0a0e1a !important;
    }
    
    .section-gray {
        background: linear-gradient(180deg, #1a1f35 0%, #0a0e1a 100%) !important;
    }
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: var(--font-weight-extrabold);
    color: #0f172a;
    margin-bottom: 1rem;
}

@media (prefers-color-scheme: dark) {
    .section-title {
        color: #f8fafc !important;
    }
}

.section-subtitle {
    font-size: 1.25rem;
    color: #475569;
    max-width: 48rem;
    margin: 0 auto;
}

@media (prefers-color-scheme: dark) {
    .section-subtitle {
        color: #cbd5e1 !important;
    }
}

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

.feature-card {
    padding: 2rem;
    background: linear-gradient(135deg, var(--primary-50) 0%, white 100%);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    box-shadow: var(--shadow-2xl);
    transform: translateY(-8px);
}

.feature-card:nth-child(2) {
    background: linear-gradient(135deg, var(--secondary-50) 0%, white 100%);
}

.feature-card:nth-child(3) {
    background: linear-gradient(135deg, var(--success-50) 0%, white 100%);
}

.feature-icon {
    width: 4rem;
    height: 4rem;
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: transform var(--transition-base);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-card:nth-child(2) .feature-icon {
    background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-pink) 100%);
}

.feature-card:nth-child(3) .feature-icon {
    background: linear-gradient(135deg, var(--success-600) 0%, #14b8a6 100%);
}

.feature-icon svg {
    width: 2rem;
    height: 2rem;
    color: white;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary) !important;
    margin-bottom: 0.75rem;
}

.feature-description {
    color: var(--text-secondary) !important;
}

/* Programs Section */
.programs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.program-card {
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

@media (prefers-color-scheme: dark) {
    .program-card {
        background: #1a1f35 !important;
        border: 1px solid var(--border-light);
    }
}

.program-card:hover {
    box-shadow: var(--shadow-2xl);
    transform: translateY(-8px);
}

.program-image {
    height: 12rem;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.program-card:nth-child(2) .program-image {
    background: linear-gradient(135deg, var(--accent-purple) 0%, var(--secondary-600) 100%);
}

.program-card:nth-child(3) .program-image {
    background: linear-gradient(135deg, var(--success-500) 0%, var(--success-600) 100%);
}

.program-card:nth-child(4) .program-image {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.program-image svg {
    width: 5rem;
    height: 5rem;
    color: white;
}

.program-content {
    padding: 1.5rem;
}

.program-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: #0f172a;
    margin-bottom: 0.5rem;
}

.program-description {
    color: #475569;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

@media (prefers-color-scheme: dark) {
    .program-title {
        color: #f8fafc !important;
    }
    
    .program-description {
        color: #cbd5e1 !important;
    }
}

.program-meta {
    color: var(--primary-600);
    font-weight: var(--font-weight-semibold);
}

.program-card:nth-child(2) .program-meta {
    color: var(--accent-purple);
}

.program-card:nth-child(3) .program-meta {
    color: var(--success-600);
}

.program-card:nth-child(4) .program-meta {
    color: #dc2626;
}

/* Steps Section */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.step-item {
    text-align: center;
}

.step-number {
    width: 5rem;
    height: 5rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
}

.step-item:nth-child(2) .step-number {
    background: linear-gradient(135deg, var(--accent-purple) 0%, #7c3aed 100%);
}

.step-item:nth-child(3) .step-number {
    background: linear-gradient(135deg, var(--success-600) 0%, #059669 100%);
}

.step-item:nth-child(4) .step-number {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.step-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary) !important;
    margin-bottom: 0.5rem;
}

.step-description {
    color: var(--text-secondary) !important;
}

/* CTA Section */
.cta-section {
    padding: 5rem 0;
    background: var(--gradient-primary);
    text-align: center;
}

.cta-title {
    font-size: 3rem;
    font-weight: var(--font-weight-extrabold);
    color: white;
    margin-bottom: 1.5rem;
}

.cta-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    max-width: 42rem;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn-white {
    padding: 1rem 2rem;
    background: white;
    color: var(--primary-600);
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-bold);
    font-size: 1.125rem;
    transition: all var(--transition-base);
}

.btn-white:hover {
    box-shadow: var(--shadow-2xl);
    transform: translateY(-4px);
}

.btn-outline-white {
    padding: 1rem 2rem;
    background: transparent;
    color: white;
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-bold);
    font-size: 1.125rem;
    border: 2px solid white;
    transition: all var(--transition-base);
}

.btn-outline-white:hover {
    background: white;
    color: var(--primary-600);
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.contact-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    transition: box-shadow var(--transition-base);
}

@media (prefers-color-scheme: dark) {
    .contact-card {
        background: #1a1f35 !important;
        border: 1px solid var(--border-light);
    }
}

.contact-card:hover {
    box-shadow: var(--shadow-xl);
}

.contact-icon {
    width: 4rem;
    height: 4rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.contact-card:nth-child(2) .contact-icon {
    background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-pink) 100%);
}

.contact-card:nth-child(3) .contact-icon {
    background: linear-gradient(135deg, var(--success-600) 0%, #14b8a6 100%);
}

.contact-icon svg {
    width: 2rem;
    height: 2rem;
    color: white;
}

.contact-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: #0f172a;
    margin-bottom: 0.5rem;
}

.contact-text {
    color: #475569;
}

@media (prefers-color-scheme: dark) {
    .contact-title {
        color: #f8fafc !important;
    }
    
    .contact-text {
        color: #cbd5e1 !important;
    }
}

/* Footer */
footer {
    background: var(--gray-900);
    color: white;
    padding: 3rem 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    background: linear-gradient(135deg, #93c5fd 0%, #c084fc 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

.footer-description {
    color: var(--gray-400);
    margin-bottom: 1rem;
}

.footer-title {
    font-weight: var(--font-weight-bold);
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

.footer-info {
    color: var(--gray-400);
    margin-bottom: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: 2rem;
    text-align: center;
    color: var(--gray-400);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes blob {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .programs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .programs-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
}