/* ========================================
   KETONIA THEME - CSS Variables
   ======================================== */

:root {
    /* Primary Colors */
    --primary-color: #667eea;
    --primary-dark: #764ba2;
    --primary-light: #8e9aaf;
    
    /* Secondary Colors */
    --secondary-color: #f8f9fa;
    --secondary-dark: #e9ecef;
    
    /* Text Colors */
    --text-primary: #495057;
    --text-secondary: #6c757d;
    --text-light: #ffffff;
    
    /* Status Colors */
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    
    /* Gradients */
    --primary-gradient: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    --success-gradient: linear-gradient(135deg, var(--success-color) 0%, #20c997 100%);
    --warning-gradient: linear-gradient(135deg, var(--warning-color) 0%, #fd7e14 100%);
    --danger-gradient: linear-gradient(135deg, var(--danger-color) 0%, #e83e8c 100%);
    
    /* Shadows */
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    
    /* Border Radius */
    --border-radius: 10px;
    --border-radius-lg: 15px;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 3rem;
}

/* ========================================
   GLOBAL STYLES
   ======================================== */

body {
    font-family: 'Tahoma', sans-serif;
    background: var(--primary-gradient);
    min-height: 100vh;
    color: var(--text-primary);
}

/* ========================================
   NAVBAR STYLES
   ======================================== */

.navbar {
    background: var(--primary-gradient);
    box-shadow: var(--shadow);
}

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

.navbar-nav .nav-link {
    color: var(--text-light) !important;
}

.navbar-nav .nav-link:hover {
    opacity: 0.8;
}

/* ========================================
   SIDEBAR STYLES
   ======================================== */

.sidebar {
    background: white;
    box-shadow: var(--shadow);
    min-height: calc(100vh - 76px);
    border-radius: 0 var(--border-radius-lg) var(--border-radius-lg) 0;
}

.sidebar .nav-link {
    color: var(--text-primary);
    border-radius: var(--border-radius);
    margin: var(--spacing-xs) 0;
    transition: all 0.3s ease;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    background: var(--primary-gradient);
    color: var(--text-light);
    transform: translateX(5px);
}

/* ========================================
   BUTTON STYLES
   ======================================== */

.btn-primary {
    background: var(--primary-gradient);
    border: none;
    border-radius: var(--border-radius);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-weight: bold;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-success {
    background: var(--success-gradient);
    border: none;
    border-radius: var(--border-radius);
}

.btn-warning {
    background: var(--warning-gradient);
    border: none;
    border-radius: var(--border-radius);
}

.btn-danger {
    background: var(--danger-gradient);
    border: none;
    border-radius: var(--border-radius);
}

/* ========================================
   FORM STYLES
   ======================================== */

.form-control {
    border-radius: var(--border-radius);
    border: 1px solid var(--secondary-dark);
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* ========================================
   CARD STYLES
   ======================================== */

.card {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: none;
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.login-card {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.logo-section {
    background: var(--primary-gradient);
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--text-light);
}

.logo-section img {
    max-width: 200px;
    height: auto;
}

/* ========================================
   STATS CARDS
   ======================================== */

.stats-card {
    background: var(--primary-gradient);
    color: var(--text-light);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow);
}

.stats-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* ========================================
   ALERT STYLES
   ======================================== */

.alert {
    border-radius: var(--border-radius);
    border: none;
}

.alert-success {
    background: var(--success-gradient);
    color: var(--text-light);
}

.alert-info {
    background: var(--primary-gradient);
    color: var(--text-light);
}

.alert-warning {
    background: var(--warning-gradient);
    color: var(--text-primary);
}

.alert-danger {
    background: var(--danger-gradient);
    color: var(--text-light);
}

/* ========================================
   BADGE STYLES
   ======================================== */

.badge {
    border-radius: var(--border-radius);
    font-weight: normal;
}

.badge.bg-primary {
    background: var(--primary-gradient) !important;
}

.badge.bg-success {
    background: var(--success-gradient) !important;
}

.badge.bg-warning {
    background: var(--warning-gradient) !important;
}

.badge.bg-danger {
    background: var(--danger-gradient) !important;
}

/* ========================================
   AVATAR STYLES
   ======================================== */

.avatar-sm {
    width: 32px;
    height: 32px;
    font-size: 14px;
}

.avatar-md {
    width: 48px;
    height: 48px;
    font-size: 18px;
}

.avatar-lg {
    width: 64px;
    height: 64px;
    font-size: 24px;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.text-primary {
    color: var(--primary-color) !important;
}

.bg-primary {
    background: var(--primary-gradient) !important;
}

.border-primary {
    border-color: var(--primary-color) !important;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
    .sidebar {
        min-height: auto;
        border-radius: 0;
    }
    
    .stats-card {
        padding: var(--spacing-md);
    }
    
    .logo-section {
        padding: var(--spacing-lg);
    }
    
    .logo-section img {
        max-width: 150px;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* ========================================
   KETONIA BRAND SPECIFIC
   ======================================== */

/* Health & Wellness Theme */
.health-gradient {
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
}

.health-text {
    color: #4CAF50;
}

.health-border {
    border-color: #4CAF50;
}

/* Success & Growth Theme */
.growth-gradient {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
}

.growth-text {
    color: #28a745;
}

.growth-border {
    border-color: #28a745;
}

/* Professional Medical Theme */
.medical-gradient {
    background: linear-gradient(135deg, #17a2b8 0%, #138496 100%);
}

.medical-text {
    color: #17a2b8;
}

.medical-border {
    border-color: #17a2b8;
}