:root {
    --primary-color: #ff7f27; /* Vibrant orange accent */
    --dark-bg: #121212;
    --dark-surface: #1e1e1e;
    --text-color: #ffffff;
    --text-muted: #a0a0a0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-color);
    scroll-behavior: smooth;
    padding-top: 56px; /* Adjust for fixed navbar */
}

/* Navbar */
.navbar {
    background-color: rgba(30, 30, 30, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.navbar-brand {
    font-weight: bold;
    color: var(--primary-color) !important;
}

.nav-link {
    color: var(--text-muted) !important;
    transition: color 0.3s ease;
}

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


/* Hero Section */
.hero-section {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1542751371-adc38448a05e?q=80&w=2070&auto=format&fit=crop') no-repeat center center/cover;
    max-height: 1080px;
}

/* Page Header for sub-pages */
.page-header {
    background: linear-gradient(to right, #6a11cb, #2575fc);
    color: white;
    padding: 60px 0;
}


/* Features Section */
.features-section, .about-section {
    background-color: var(--dark-bg);
    color: var(--text-color);
}
.about-section {
    background-color: var(--dark-surface);
}

.feature-card {
    background-color: var(--dark-surface);
    padding: 30px;
    border-radius: 10px;
    border: 1px solid #333;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(255, 127, 39, 0.1);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* Signup Section */
.signup-section {
    background-color: var(--primary-color);
}

/* Footer */
.footer {
    background-color: var(--dark-surface);
    color: var(--text-muted);
}

/* Common button styles */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    font-weight: bold;
    transition: background-color 0.3s, border-color 0.3s;
}

.btn-primary:hover {
    background-color: #e67322;
    border-color: #e67322;
}

.form-control {
    background-color: #2c2c2c;
    border: 1px solid #444;
    color: var(--text-color);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-control:focus {
    background-color: #2c2c2c;
    color: var(--text-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(255, 127, 39, 0.25);
}

main.container {
    background-color: var(--dark-surface);
    border-radius: 8px;
    padding-top: 30px;
    padding-bottom: 30px;
}

.page-header {
    background: var(--dark-surface);
    padding: 4rem 0;
    margin-bottom: -1px;
    border-bottom: 1px solid #333;
}