/* ============================================================
   CoreSpaceX - Master Public Stylesheet
   Theme: Vibrant Clean Light Mode / Modern SaaS Aesthetic
   ============================================================ */

:root {
    --bg-dark: #f8fafc;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --border-color: #e2e8f0;
    --border-glow: rgba(2, 132, 199, 0.3);
    
    --primary: #0284c7;
    --primary-glow: rgba(2, 132, 199, 0.2);
    --secondary: #4f46e5;
    --accent: #10b981;
    --accent-warning: #d97706;
    
    --text-main: #0f172a;
    --text-muted: #475569;
    --text-dim: #94a3b8;
    
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --card-shadow: 0 10px 30px -5px rgba(15, 23, 42, 0.05), 0 4px 6px -2px rgba(15, 23, 42, 0.03);
    --card-shadow-hover: 0 20px 40px -10px rgba(2, 132, 199, 0.15), 0 8px 16px -4px rgba(15, 23, 42, 0.06);
}

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

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    color: #0369a1;
}

ul {
    list-style: none;
}

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Section Common Styles */
.section {
    padding: 6rem 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 750px;
    margin: 0 auto 4rem auto;
}

.section-tag {
    display: inline-block;
    padding: 0.35rem 1rem;
    background: rgba(2, 132, 199, 0.08);
    border: 1px solid rgba(2, 132, 199, 0.25);
    border-radius: var(--radius-full);
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 1rem;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
}

/* Buttons & CTAs */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 1.8rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(2, 132, 199, 0.4);
    color: #ffffff;
}

.btn-outline {
    background: #ffffff;
    border-color: var(--border-color);
    color: var(--text-main);
    box-shadow: 0 2px 5px rgba(0,0,0,0.02);
}

.btn-outline:hover {
    border-color: var(--primary);
    background: rgba(2, 132, 199, 0.06);
    color: var(--primary);
}

/* Header & Navbar */
.navbar-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-normal);
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.03);
}

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

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-main);
}

.logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #ffffff;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.brand-logo .highlight {
    color: var(--primary);
}

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

.nav-link {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.95rem;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2.5px;
    background: var(--primary);
    border-radius: 99px;
    transition: var(--transition-fast);
}

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

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero-section {
    padding-top: 10rem;
    padding-bottom: 6rem;
    position: relative;
    background: radial-gradient(circle at 50% 20%, rgba(2, 132, 199, 0.08), var(--bg-dark) 70%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1.1rem;
    background: rgba(2, 132, 199, 0.08);
    border: 1px solid rgba(2, 132, 199, 0.25);
    border-radius: var(--radius-full);
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 3.4rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    color: var(--text-main);
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 1.2rem;
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
}

.hero-banner-img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow-hover);
    border: 1px solid var(--border-color);
}

.hero-code-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--card-shadow-hover);
}

.card-header {
    background: #f8fafc;
    padding: 0.8rem 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.card-title {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.code-body {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    background: #0f172a;
    color: #e2e8f0;
    overflow-x: auto;
    line-height: 1.6;
}

.code-keyword { color: #38bdf8; }
.code-func { color: #818cf8; }
.code-str { color: #34d399; }
.code-comment { color: #64748b; font-style: italic; }

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-banner-img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 2rem;
}

.feature-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    box-shadow: var(--card-shadow);
}

.feature-item:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--card-shadow-hover);
}

.feature-icon {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 0.8rem;
}

.feature-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
    color: var(--text-main);
}

.feature-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.2rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    opacity: 0;
    transition: var(--transition-fast);
}

.service-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(2, 132, 199, 0.3);
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
}

.service-card:hover::before {
    opacity: 1;
}

.service-icon-box {
    width: 60px;
    height: 60px;
    background: rgba(2, 132, 199, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.service-card-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    color: var(--text-main);
}

.service-card-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

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

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

.project-thumb {
    height: 220px;
    background: #f1f5f9;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.project-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-normal);
}

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

.project-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-public {
    background: rgba(16, 185, 129, 0.15);
    color: #047857;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-restricted {
    background: rgba(245, 158, 11, 0.15);
    color: #b45309;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.project-body {
    padding: 1.8rem;
}

.project-category {
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

.project-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    color: var(--text-main);
}

.project-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    background: #f1f5f9;
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.7rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Technologies Section */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
}

.tech-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.8rem;
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition-fast);
    box-shadow: var(--card-shadow);
}

.tech-card:hover {
    border-color: var(--primary);
    background: var(--bg-card-hover);
    transform: translateY(-3px);
    box-shadow: var(--card-shadow-hover);
}

.tech-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 0.8rem;
}

.tech-name {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text-main);
}

.tech-category {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Team Section */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.team-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: var(--transition-normal);
    box-shadow: var(--card-shadow);
}

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

.team-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 1.2rem auto;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: #ffffff;
    box-shadow: 0 6px 16px var(--primary-glow);
    overflow: hidden;
}

.team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-name {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-main);
}

.team-role {
    color: var(--primary);
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.team-bio {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

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

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--card-shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.form-input, .form-textarea, .form-select {
    width: 100%;
    padding: 0.85rem 1rem;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.form-textarea {
    min-height: 140px;
    resize: vertical;
}

/* Footer */
.footer {
    background: #f1f5f9;
    border-top: 1px solid var(--border-color);
    padding-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    padding-bottom: 4rem;
}

.footer-bio {
    color: var(--text-muted);
    margin-top: 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.footer-socials {
    display: flex;
    gap: 0.75rem;
}

.social-icon {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: #ffffff;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.social-icon:hover {
    color: #ffffff;
    border-color: var(--primary);
    background: var(--primary);
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.2rem;
    color: var(--text-main);
}

.footer-links li {
    margin-bottom: 0.7rem;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.95rem;
}

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

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.info-item i {
    color: var(--primary);
    margin-top: 0.2rem;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}

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

.legal-links {
    display: flex;
    gap: 1.5rem;
}

.legal-links a {
    color: var(--text-muted);
}

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

/* Responsive Media Queries */
@media (max-width: 992px) {
    .hero-grid, .about-grid, .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 75px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 75px);
        background: rgba(255, 255, 255, 0.98);
        flex-direction: column;
        padding: 3rem;
        gap: 2rem;
        transition: var(--transition-normal);
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-toggle {
        display: block;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom-flex {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}