/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #a1a1a1;
    --text-muted: #666666;
    --accent: #6366F1;
    --accent-hover: #8B5CF6;
    --border: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);
    --backdrop: rgba(0, 0, 0, 0.8);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Light theme variables */
body.light {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #1a1a1a;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --border: rgba(0, 0, 0, 0.1);
    --border-hover: rgba(0, 0, 0, 0.2);
    --backdrop: rgba(255, 255, 255, 0.9);
}

/* Dark Navbar */
.dark-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.light .dark-navbar {
    background: rgba(255, 255, 255, 0.8);
}

.navbar-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Brand/Logo */
.navbar-brand {
    flex-shrink: 0;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    transition: opacity 0.2s ease;
}

.brand-link:hover {
    opacity: 0.8;
}

.brand-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Desktop Navigation */
.navbar-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-item {
    position: relative;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.2s ease;
    letter-spacing: -0.01em;
}

.nav-item:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
}

body.light .nav-item:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.nav-item.active {
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background-color: var(--accent);
    border-radius: 50%;
}

/* Right Actions */
.navbar-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
}

body.light .theme-toggle:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.theme-toggle .sun-icon,
.theme-toggle .moon-icon {
    position: absolute;
    transition: all 0.3s ease;
}

.theme-toggle .sun-icon {
    opacity: 0;
    transform: rotate(180deg) scale(0.8);
}

.theme-toggle .moon-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

body.light .theme-toggle .sun-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

body.light .theme-toggle .moon-icon {
    opacity: 0;
    transform: rotate(-180deg) scale(0.8);
}

.nav-divider {
    width: 1px;
    height: 20px;
    background-color: var(--border);
}

.contact-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    padding: 10px 20px;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    border-radius: 8px;
    transition: all 0.2s ease;
    letter-spacing: -0.01em;
}

.contact-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.contact-btn svg {
    transition: transform 0.2s ease;
}

.contact-btn:hover svg {
    transform: translate(2px, -2px);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.menu-line {
    width: 20px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
}

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

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

/* Mobile Overlay */
.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--backdrop);
    backdrop-filter: blur(20px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.mobile-menu {
    height: 100vh;
    overflow-y: auto;
    padding: 0 24px;
    display: flex;
    flex-direction: column;
}

.mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    border-bottom: 1px solid var(--border);
}

.mobile-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mobile-brand-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.mobile-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.mobile-close:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
}

body.light .mobile-close:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

/* Mobile Navigation */
.mobile-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 60px 0 40px;
}

.mobile-nav-section {
    margin-bottom: 60px;
}

.mobile-nav-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mobile-nav-item {
    display: flex;
    align-items: center;
    gap: 20px;
    text-decoration: none;
    color: var(--text-secondary);
    padding: 20px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
    transform: translateX(-20px);
    opacity: 0;
    animation: slideInLeft 0.5s ease forwards;
}

body.light .mobile-nav-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.mobile-nav-item:hover,
.mobile-nav-item.active {
    color: var(--text-primary);
    transform: translateX(0);
}

.mobile-nav-item:nth-child(1) { animation-delay: 0.1s; }
.mobile-nav-item:nth-child(2) { animation-delay: 0.2s; }
.mobile-nav-item:nth-child(3) { animation-delay: 0.3s; }
.mobile-nav-item:nth-child(4) { animation-delay: 0.4s; }
.mobile-nav-item:nth-child(5) { animation-delay: 0.5s; }

.nav-number {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    min-width: 24px;
    font-variant-numeric: tabular-nums;
}

.nav-text {
    font-size: 28px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* Mobile Footer */
.mobile-footer {
    padding-top: 40px;
    border-top: 1px solid var(--border);
}

.mobile-social {
    display: flex;
    gap: 32px;
    margin-bottom: 32px;
}

.social-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

.mobile-contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    border-radius: 12px;
    transition: all 0.3s ease;
    letter-spacing: -0.01em;
}

.mobile-contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.3);
}

/* Animations */
@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-nav,
    .navbar-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .navbar-wrapper {
        padding: 0 20px;
        height: 64px;
    }
    
    .brand-text {
        font-size: 18px;
    }
    
    .mobile-menu {
        padding: 0 20px;
    }
    
    .mobile-header {
        height: 64px;
    }
}

@media (max-width: 480px) {
    .navbar-wrapper {
        padding: 0 16px;
    }
    
    .mobile-menu {
        padding: 0 16px;
    }
    
    .nav-text {
        font-size: 24px;
    }
    
    .mobile-social {
        gap: 24px;
    }
}