/* Modern CSS Enhancements for Perunika B&B */
/* This file provides modern styling improvements across the application */

/* CSS Custom Properties for consistent theming */
:root {
    --primary-color: #667eea;
    --primary-dark: #5a6fd8;
    --secondary-color: #764ba2;
    --accent-color: #ff6b6b;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --info-color: #3498db;
    
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --text-muted: #95a5a6;
    
    --bg-light: #f8f9fa;
    --bg-lighter: #ffffff;
    --border-color: #e9ecef;
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.12);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s ease;
}

/* CSS Animations */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Global improvements */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Cabin', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-light);
}

/* Typography improvements */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

.lead {
    font-size: 1.125rem;
    font-weight: 400;
    line-height: 1.6;
}

/* Button improvements */
.btn {
    font-weight: 600;
    border-radius: var(--border-radius);
    padding: 0.75rem 1.5rem;
    transition: var(--transition);
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn:hover {
    transform: translateY(-2px);
    text-decoration: none;
}

.btn:focus {
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.25);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #6a4c93 100%);
    box-shadow: var(--shadow-lg);
}

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: white;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
    border-radius: var(--border-radius-lg);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

/* Card improvements */
.card {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    background: white;
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0 !important;
    padding: 1.5rem;
    border: none;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background: var(--bg-light);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
    border: none;
    padding: 1rem 1.5rem;
}

/* Form improvements */
.form-control {
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    transition: var(--transition);
    background: white;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    outline: none;
}

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

.form-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Alert improvements */
.alert {
    border: none;
    border-radius: var(--border-radius-lg);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid;
}

.alert-primary {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.alert-success {
    background: rgba(39, 174, 96, 0.1);
    color: var(--success-color);
    border-left-color: var(--success-color);
}

.alert-warning {
    background: rgba(243, 156, 18, 0.1);
    color: var(--warning-color);
    border-left-color: var(--warning-color);
}

.alert-danger {
    background: rgba(231, 76, 60, 0.1);
    color: var(--danger-color);
    border-left-color: var(--danger-color);
}

.alert-info {
    background: rgba(52, 152, 219, 0.1);
    color: var(--info-color);
    border-left-color: var(--info-color);
}

/* Badge improvements */
.badge {
    font-weight: 600;
    padding: 0.5rem 0.875rem;
    border-radius: 50px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.bg-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%) !important;
}

/* Navigation improvements */
.navbar {
    box-shadow: var(--shadow-md);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary-color) !important;
}

.nav-link {
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Spinner improvements */
.spinner-border {
    width: 1.5rem;
    height: 1.5rem;
    border-width: 2px;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 2px;
}

/* Modal improvements */
.modal-content {
    border: none;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
}

/* Table improvements */
.table {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: white;
}

.table th {
    font-weight: 600;
    background: var(--bg-light);
    border: none;
    padding: 1rem;
    color: var(--text-primary);
}

.table td {
    border: none;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

/* Loading states */
.loading-skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Utility classes */
.rounded-xl { border-radius: var(--border-radius-xl) !important; }
.rounded-lg { border-radius: var(--border-radius-lg) !important; }
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.shadow-xl { box-shadow: var(--shadow-xl) !important; }

.text-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%) !important;
}

/* Responsive improvements */
@media (max-width: 1024px) {
    .form-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    
    .search-button-group {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    .btn-lg {
        padding: 0.875rem 1.5rem;
        font-size: 0.875rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .card-header {
        padding: 1rem;
    }

    .form-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .search-summary {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    
    .form-title {
        font-size: 24px;
    }
    
    .form-subtitle {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.75rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.25rem;
        font-size: 0.875rem;
    }

    .modern-search-form {
        border-radius: 16px;
        padding: 20px 16px;
    }
    
    .guest-selector {
        padding: 8px;
    }
    
    .guest-btn {
        width: 32px;
        height: 32px;
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Focus indicators for keyboard navigation */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0066cc;
        --text-primary: #000000;
        --text-secondary: #333333;
        --border-color: #666666;
    }
}

/* Print styles */
@media print {
    .btn,
    .navbar,
    .modal,
    .dropdown-menu {
        display: none !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #000 !important;
    }
    
    a[href]:after {
        content: " (" attr(href) ")";
    }
}