/* 
 * Fitness Tracker Core Styles
 * Theme: Dark with Orange/Green Accents
 * Framework: Bootstrap 5 + Custom CSS
 */

:root {
    --primary-color: #ff8c00;
    /* Dark Orange */
    --secondary-color: #28a745;
    /* Success Green */
    --dark-bg: #121212;
    --dark-surface: #1e1e1e;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --accent-glow: rgba(255, 140, 0, 0.3);
}

body {
    background-color: var(--dark-bg);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navbar Tuning */
.navbar {
    background-color: rgba(18, 18, 18, 0.95) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.navbar-brand {
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--primary-color) !important;
}

.nav-link {
    color: var(--text-primary) !important;
    font-weight: 500;
    margin: 0 10px;
    transition: color 0.3s ease;
}

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

/* Hero Carousel */
.carousel-item {
    height: 80vh;
    min-height: 400px;
    background: no-repeat center center scroll;
    background-size: cover;
}

.carousel-caption {
    background: rgba(0, 0, 0, 0.6);
    padding: 2rem;
    border-radius: 15px;
    bottom: 20%;
    backdrop-filter: blur(5px);
}

.carousel-caption h2 {
    color: var(--primary-color);
    font-weight: 700;
}

/* Cards & Components */
.card {
    background-color: var(--dark-surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 12px;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px var(--accent-glow);
    border-color: var(--primary-color);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    font-weight: 600;
    padding: 0.8rem 2rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #e67e00;
    border-color: #e67e00;
    transform: scale(1.05);
}

/* Tracker Table */
.table {
    color: var(--text-primary);
}

.table-dark {
    background-color: var(--dark-surface);
}

/* Footer */
footer {
    background-color: #0a0a0a;
    padding: 4rem 0 2rem;
    margin-top: 5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.navbar-scrolled {
    background-color: #000000 !important;
}

.bg-orange {
    background-color: var(--primary-color) !important;
    color: white;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

/* Form Styles */
.form-control:focus,
.form-select:focus {
    background-color: #1a1a1a;
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem var(--accent-glow);
}

.is-invalid {
    border-color: #dc3545 !important;
}

/* Responsive Utilities */
@media (max-width: 768px) {
    .carousel-item {
        height: 60vh;
    }

    .carousel-caption {
        padding: 1rem;
        width: 90%;
        left: 5%;
    }
}