/* Global Styles */
:root {
    /* Light Mode Colors */
    --primary-color: #4CAF50; /* Green for nutrition theme */
    --secondary-color: #8BC34A; /* Light green */
    --accent-color: #FFC107; /* Amber */
    --dark-color: #2E3B4E; /* Dark blue-gray */
    --light-color: #f8f9fc;
    --danger-color: #e74a3b;
    --success-color: #4CAF50;
    --text-color: #333333;
    --bg-color: #ffffff;
    --card-bg: #ffffff;
    --card-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --header-overlay: rgba(0, 0, 0, 0.5);
    --border-color: #e9ecef;
    --input-bg: #ffffff;
    --input-border: #ced4da;
    --footer-bg: #2E3B4E;
    --footer-text: #ffffff;
    --navbar-bg: #ffffff;
    --navbar-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition-speed: 0.3s;
}

/* Dark Mode Colors */
.dark-mode {
    --primary-color: #66BB6A; /* Slightly lighter green for dark mode */
    --secondary-color: #9CCC65; /* Lighter green for dark mode */
    --accent-color: #FFD54F; /* Lighter amber for dark mode */
    --dark-color: #1E2A3A; /* Darker blue-gray */
    --light-color: #2E3B4E;
    --text-color: #E0E0E0;
    --bg-color: #121212;
    --card-bg: #1E1E1E;
    --card-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.5);
    --header-overlay: rgba(0, 0, 0, 0.7);
    --border-color: #2c2c2c;
    --input-bg: #2c2c2c;
    --input-border: #444444;
    --footer-bg: #1E2A3A;
    --footer-text: #E0E0E0;
    --navbar-bg: #1E1E1E;
    --navbar-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Nunito', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    padding-top: 56px;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

/* Navigation */
.navbar {
    box-shadow: var(--navbar-shadow);
    background-color: var(--navbar-bg);
    transition: background-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    padding: 0.8rem 1rem;
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary-color) !important;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand img {
    height: 40px;
    transition: transform 0.3s ease;
}

.navbar-brand:hover img {
    transform: scale(1.05);
}

.nav-link {
    font-weight: 600;
}

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

/* Hero Section */
.hero-section {
    height: 75vh;
    min-height: 500px;
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://images.unsplash.com/photo-1490818387583-1baba5e638af?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
}

.hero-section h1 {
    font-size: 3rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-section .lead {
    font-size: 1.5rem;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

/* Page Header */
.page-header {
    height: 40vh;
    min-height: 300px;
    background-image: linear-gradient(rgba(78, 115, 223, 0.8), rgba(78, 115, 223, 0.8)), url('https://images.unsplash.com/photo-1490818387583-1baba5e638af?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.page-header .lead {
    font-size: 1.3rem;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

/* Feature Icons */
.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Service Cards */
.service-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color var(--transition-speed) ease;
    border: none;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.15);
}

.service-icon-container {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon {
    font-size: 1.5rem;
    color: white;
}

.price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* Package Cards */
.package-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    border-radius: 0.5rem;
    overflow: hidden;
}

.package-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.15);
}

.package-card.featured {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
}

.package-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.package-card .card-header {
    background-color: white;
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
    position: relative;
    padding-bottom: 2rem;
}

.package-card .badge {
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

/* Doctor Profile */
.doctor-image-container {
    position: relative;
    overflow: hidden;
    border-radius: 0.5rem;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.doctor-image {
    transition: transform 0.3s ease;
}

.doctor-image-container:hover .doctor-image {
    transform: scale(1.05);
}

/* Payment Methods */
.payment-method-card {
    padding: 1.25rem;
    border-radius: 0.5rem;
    background-color: #f8f9fc;
    margin-bottom: 1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.payment-method-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
}

.payment-icon-container {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.payment-icon {
    font-size: 1.2rem;
    color: white;
}

.payment-cards-container {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

.payment-card-icon {
    font-size: 2rem;
    color: var(--dark-color);
}

/* Calculator Styles */
.macro-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.protein-circle {
    background-color: #4e73df;
}

.carbs-circle {
    background-color: #1cc88a;
}

.fat-circle {
    background-color: #f6c23e;
}

/* Footer */
.social-icons a {
    transition: transform 0.3s ease;
    display: inline-block;
}

.social-icons a:hover {
    transform: translateY(-3px);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .hero-section {
        height: 60vh;
    }
    
    .hero-section h1 {
        font-size: 2.2rem;
    }
    
    .hero-section .lead {
        font-size: 1.2rem;
    }
    
    .page-header {
        height: 30vh;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .package-card.featured {
        transform: scale(1);
    }
    
    .package-card.featured:hover {
        transform: translateY(-5px);
    }
}

@media (max-width: 576px) {
    .hero-section h1 {
        font-size: 1.8rem;
    }
    
    .hero-section .lead {
        font-size: 1rem;
    }
}