:root {
    /* Light Theme */
    --primary-color: #000000;
    --secondary-color: #1a1a1a;
    --text-color: #333333;
    --light-bg: #f8f8f8;
    --white: #ffffff;
    --gray: #666666;
    --light-gray: #e0e0e0;
    --dark-gray: #1a1a1a;
    --card-bg: #ffffff;
    --card-border: #e0e0e0;
    --navbar-bg: #ffffff;
    --navbar-shadow: rgba(0,0,0,0.1);
}

[data-theme="dark"] {
    /* Dark Theme */
    --primary-color: #ffffff;
    --secondary-color: #e0e0e0;
    --text-color: #e0e0e0;
    --light-bg: #1a1a1a;
    --white: #121212;
    --gray: #9ca3af;
    --light-gray: #2d2d2d;
    --dark-gray: #e0e0e0;
    --card-bg: #1a1a1a;
    --card-border: #2d2d2d;
    --navbar-bg: #121212;
    --navbar-shadow: rgba(0,0,0,0.3);
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--white);
    position: relative;
    min-height: 100vh;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--dark-gray) 0%, var(--primary-color) 100%);
    opacity: 0.02;
    z-index: -1;
    pointer-events: none;
}

.navbar {
    background-color: var(--navbar-bg);
    box-shadow: 0 1px 3px var(--navbar-shadow);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 0.5rem 0;
    background-color: var(--navbar-bg);
    backdrop-filter: blur(10px);
}

.navbar.scrolled .navbar-brand {
    font-size: 18px;
    letter-spacing: 1px;
}

.navbar-brand {
    font-weight: 900;
    font-size: 52px;
    color: var(--primary-color);
    letter-spacing: 2px;
    font-family: 'Audiowide', cursive;
}

.nav-link {
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem 1.2rem;
    transition: color 0.3s ease;
}

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

.hero-section {
    background-color: var(--white);
    color: var(--text-color);
    padding: 10rem 0 6rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: var(--gray);
    font-weight: 400;
}

.btn-primary {
    background-color: var(--primary-color);
    border: none;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    color: var(--white);
}

[data-theme="dark"] .btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

[data-theme="dark"] .btn-primary:hover {
    background-color: var(--secondary-color);
    color: var(--white);
}

.section {
    padding: 6rem 0;
    position: relative;
    background-color: var(--white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--light-gray), transparent);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    letter-spacing: -1px;
    color: var(--primary-color);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 3rem;
    font-weight: 400;
}

.section.bg-light {
    background-color: var(--light-bg) !important;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 0;
    padding: 2.5rem;
    height: 100%;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px var(--navbar-shadow);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
    color: var(--primary-color);
}

.feature-description {
    color: var(--gray);
    font-weight: 400;
}

.cta-section {
    background: var(--light-bg);
    padding: 6rem 0;
    position: relative;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--light-gray), transparent);
}

.footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 4rem 0 2rem;
    box-shadow: 0 -2px 4px rgba(0,0,0,0.05);
}

.footer-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: -0.5px;
}

.footer-link {
    color: #9ca3af;
    text-decoration: none;
    display: block;
    margin-bottom: 0.75rem;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--white);
}

.social-icon {
    color: var(--white);
    font-size: 1.5rem;
    margin-right: 1rem;
    opacity: 0.8;
    transition: all 0.3s ease;
}

.social-icon:hover {
    opacity: 1;
    transform: translateY(-2px);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* List items with checkmarks */
.list-unstyled li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
}

.list-unstyled li i {
    position: absolute;
    left: 0;
    top: 0.25rem;
    color: var(--primary-color);
}

.theme-toggle {
    color: var(--primary-color);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: all 0.3s ease;
    background: none;
    border: none;
}

.theme-toggle:hover {
    color: var(--secondary-color);
    transform: rotate(15deg);
}

[data-theme="dark"] .theme-toggle {
    color: var(--primary-color);
}

[data-theme="dark"] .theme-toggle:hover {
    color: var(--secondary-color);
}

.dropdown-menu {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: 0 2px 4px var(--navbar-shadow);
}

.dropdown-item {
    color: var(--text-color);
    padding: 0.5rem 1.5rem;
    transition: all 0.3s ease;
}

.dropdown-item:hover {
    background-color: var(--light-bg);
    color: var(--primary-color);
}

.dropdown-item.active {
    background-color: var(--primary-color);
    color: var(--white);
}

[data-theme="dark"] .dropdown-menu {
    background-color: var(--card-bg);
    border-color: var(--card-border);
}

[data-theme="dark"] .dropdown-item:hover {
    background-color: var(--light-bg);
    color: var(--primary-color);
}

[data-theme="dark"] .dropdown-item.active {
    background-color: var(--primary-color);
    color: var(--white);
}