:root {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e9ecef;
    --text-primary: #1a1d29;
    --text-secondary: #6c757d;
    --text-accent: #0066ff;
    --accent-primary: #0066ff;
    --accent-secondary: #00f0ff;
    --border-color: #dee2e6;
    --shadow: rgba(0, 0, 0, 0.1);
    --sidebar-bg: #ffffff;
    --sidebar-hover: #f8f9fa;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --bg-primary: #0a0e27;
    --bg-secondary: #12162e;
    --bg-tertiary: #1a1f3a;
    --text-primary: #e8eaf0;
    --text-secondary: #9ca3af;
    --text-accent: #00f0ff;
    --accent-primary: #00f0ff;
    --accent-secondary: #0066ff;
    --border-color: #2d3350;
    --shadow: rgba(0, 240, 255, 0.15);
    --sidebar-bg: #12162e;
    --sidebar-hover: #1a1f3a;
}

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

body {
    font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
    overflow-x: hidden;
}

/* Sidebar Navigation */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    width: 280px;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    transform: translateX(-280px);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    overflow-y: auto;
    box-shadow: 4px 0 20px var(--shadow);
}

.sidebar.open {
    transform: translateX(0);
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
}

.logo svg {
    width: 160px;
    height: auto;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    line-height: 1;
    transition: var(--transition);
    display: block;
}

.close-btn:hover {
    color: var(--accent-primary);
}

.nav-menu {
    list-style: none;
    padding: 1rem 0;
}

.nav-item {
    margin: 0.25rem 0;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.875rem 1.5rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
    position: relative;
}

.nav-link:hover {
    background: var(--sidebar-hover);
    color: var(--accent-primary);
    padding-left: 2rem;
}

.nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--accent-primary);
    transition: var(--transition);
}

.nav-link:hover::before {
    height: 60%;
}

.nav-icon {
    margin-right: 1rem;
    font-size: 1.2rem;
}

.sidebar-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.contact-info {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.contact-info a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: var(--transition);
}

.contact-info a:hover {
    text-decoration: underline;
}

/* Main Content */
.main-content {
    min-height: 100vh;
    transition: var(--transition);
}

/* Header */
.header {
    position: sticky;
    top: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 100;
    box-shadow: 0 2px 10px var(--shadow);
}

.hamburger {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    transition: var(--transition);
}

.hamburger:hover {
    opacity: 0.7;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

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

.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
}

.theme-toggle:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

/* Hero Section */
.hero {
    padding: 6rem 2rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--accent-primary)20, transparent 70%);
    opacity: 0.1;
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.1; }
    50% { transform: scale(1.1); opacity: 0.15; }
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-family: 'Orbitron', monospace;
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: slideInDown 0.8s ease-out;
}

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

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    animation: slideInUp 0.8s ease-out 0.2s both;
}

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

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: 0 4px 20px var(--shadow);
    animation: slideInUp 0.8s ease-out 0.4s both;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 30px var(--shadow);
}

/* Services Section */
.services {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px var(--shadow);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.service-card h3 {
    font-family: 'Orbitron', monospace;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Features Section */
.features {
    padding: 5rem 2rem;
    background: var(--bg-secondary);
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-item {
    text-align: center;
    padding: 1.5rem;
}

.feature-number {
    font-family: 'Orbitron', monospace;
    font-size: 3rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.feature-item h4 {
    font-family: 'Orbitron', monospace;
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Contact Section */
.contact {
    padding: 5rem 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.contact-form {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem;
    box-shadow: 0 4px 20px var(--shadow);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--shadow);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem 2rem;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-logo {
    display: inline-flex;
    justify-content: center;
    margin-bottom: 1rem;
}

.footer-logo svg {
    width: 200px;
    height: auto;
}

.footer p {
    color: var(--text-secondary);
    margin-top: 1rem;
}

/* Mobile Install Prompt */
.install-prompt {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-top: 2px solid var(--accent-primary);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    box-shadow: 0 -4px 20px var(--shadow);
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
}

.install-prompt.show {
    transform: translateY(0);
}

.install-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.install-icon {
    font-size: 2rem;
}

.install-text h4 {
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.install-text p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.install-actions {
    display: flex;
    gap: 0.5rem;
}

.install-btn {
    padding: 0.5rem 1rem;
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
    white-space: nowrap;
}

.install-btn:hover {
    background: var(--accent-secondary);
}

.dismiss-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.dismiss-btn:hover {
    background: var(--bg-tertiary);
}

/* Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    backdrop-filter: blur(4px);
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .services-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 2rem;
    }

    .install-prompt {
        flex-direction: column;
        align-items: stretch;
    }

    .install-actions {
        width: 100%;
    }

    .install-btn {
        flex: 1;
    }
}