/* WineCalc - Advanced Theme System with Dark Mode & Multiple Themes */

/* ============================================
   DEFAULT THEME: Wine/Bordeaux (Light Mode)
   ============================================ */

:root {
    /* Primary Colors - Wine Theme */
    --primary: #722F37;              /* Bordeaux - WCAG AAA compliant */
    --primary-dark: #5a2529;         /* Dark Bordeaux */
    --primary-light: #ffe5e8;        /* Light Bordeaux */
    --primary-rgb: 114, 47, 55;      /* RGB values for alpha */

    /* Bootstrap Variable Overrides */
    --bs-primary: #722F37;
    --bs-primary-rgb: 114, 47, 55;
    --bs-link-color: #722F37;
    --bs-link-hover-color: #5a2529;
    --bs-border-color: #DEE2E6;

    /* Secondary Colors */
    --secondary: #C9A96E;            /* Champagne Gold */
    --secondary-dark: #a88b56;
    --secondary-light: #f5ecd7;

    /* Accent Colors */
    --accent: #4A7C59;               /* Grape Green */
    --accent-light: #d4e8dc;

    /* Background Colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #E9ECEF;

    /* Text Colors - WCAG AAA Compliant */
    --text-primary: #212529;         /* Contrast ratio 16:1 on white */
    --text-secondary: #495057;       /* Contrast ratio 10:1 on white */
    --text-muted: #6c757d;          /* Contrast ratio 7:1 on white */
    --text-inverse: #FFFFFF;

    /* Border Colors */
    --border-color: #DEE2E6;
    --border-color-light: #E9ECEF;

    /* Shadow Colors */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.15);
    --shadow-primary: 0 4px 12px rgba(var(--primary-rgb), 0.2);

    /* Focus Indicators - WCAG 3 Compliant */
    --focus-ring: 0 0 0 3px rgba(var(--primary-rgb), 0.3);
    --focus-ring-width: 3px;
    --focus-ring-offset: 2px;

    /* Spacing & Sizing */
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;

    /* Transitions */
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);

    /* Typography - Enhanced Readability */
    --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    --letter-spacing-base: 0.01em;
}

/* ============================================
   DARK MODE THEME
   ============================================ */

[data-theme="dark"] {
    /* Primary Colors - Adjusted for dark backgrounds (meno accesi) */
    --primary: #C75B6A;              /* Bordeaux più soft */
    --primary-dark: #B04856;
    --primary-light: #3a1f23;
    --primary-rgb: 199, 91, 106;

    /* Bootstrap Variable Overrides for Dark Mode */
    --bs-primary: #C75B6A;
    --bs-primary-rgb: 199, 91, 106;
    --bs-link-color: #C75B6A;
    --bs-link-hover-color: #B04856;
    --bs-border-color: #333333;

    /* Secondary Colors */
    --secondary: #BDA877;            /* Gold più tenue */
    --secondary-dark: #A89566;
    --secondary-light: #2d2820;

    /* Accent Colors */
    --accent: #5E8F73;               /* Verde più naturale */
    --accent-light: #2a3830;

    /* Background Colors - WCAG AAA Dark Mode */
    --bg-primary: #121212;           /* Nero più profondo */
    --bg-secondary: #1E1E1E;         /* Card background più scuro */
    --bg-tertiary: #2A2A2A;          /* Hover/active states */

    /* Text Colors - WCAG AAA on dark backgrounds */
    --text-primary: #E8E8E8;         /* Bianco più soft */
    --text-secondary: #B8B8B8;       /* Grigio medio */
    --text-muted: #909090;          /* Grigio tenue */
    --text-inverse: #121212;

    /* Border Colors */
    --border-color: #333333;
    --border-color-light: #282828;

    /* Shadow Colors - Deeper for dark mode */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.6);
    --shadow-primary: 0 4px 12px rgba(var(--primary-rgb), 0.25);
}

/* ============================================
   ALTERNATE COLOR THEMES
   ============================================ */

/* Ocean Blue Theme */
[data-color-theme="ocean"] {
    --primary: #1E5A8E;
    --primary-dark: #154166;
    --primary-light: #E3F2FD;
    --primary-rgb: 30, 90, 142;
    --bs-primary: #1E5A8E;
    --bs-primary-rgb: 30, 90, 142;
    --bs-link-color: #1E5A8E;
    --bs-link-hover-color: #154166;
    --secondary: #64B5F6;
    --secondary-dark: #42A5F5;
    --secondary-light: #E1F5FE;
    --accent: #26A69A;
    --accent-light: #E0F2F1;
}

[data-theme="dark"][data-color-theme="ocean"] {
    --primary: #64B5F6;
    --primary-dark: #42A5F5;
    --primary-light: #1a3a52;
    --primary-rgb: 100, 181, 246;
    --bs-primary: #64B5F6;
    --bs-primary-rgb: 100, 181, 246;
    --bs-link-color: #64B5F6;
    --bs-link-hover-color: #42A5F5;
    --secondary: #90CAF9;
    --secondary-dark: #64B5F6;
    --secondary-light: #1a2f42;
}

/* Forest Green Theme */
[data-color-theme="forest"] {
    --primary: #2E7D32;
    --primary-dark: #1B5E20;
    --primary-light: #E8F5E9;
    --primary-rgb: 46, 125, 50;
    --bs-primary: #2E7D32;
    --bs-primary-rgb: 46, 125, 50;
    --bs-link-color: #2E7D32;
    --bs-link-hover-color: #1B5E20;
    --secondary: #66BB6A;
    --secondary-dark: #4CAF50;
    --secondary-light: #F1F8F4;
    --accent: #8D6E63;
    --accent-light: #EFEBE9;
}

[data-theme="dark"][data-color-theme="forest"] {
    --primary: #66BB6A;
    --primary-dark: #4CAF50;
    --primary-light: #1e3a20;
    --primary-rgb: 102, 187, 106;
    --bs-primary: #66BB6A;
    --bs-primary-rgb: 102, 187, 106;
    --bs-link-color: #66BB6A;
    --bs-link-hover-color: #4CAF50;
    --secondary: #81C784;
    --secondary-dark: #66BB6A;
    --secondary-light: #1a2e1c;
}

/* Lavender Purple Theme */
[data-color-theme="lavender"] {
    --primary: #6A1B9A;
    --primary-dark: #4A148C;
    --primary-light: #F3E5F5;
    --primary-rgb: 106, 27, 154;
    --bs-primary: #6A1B9A;
    --bs-primary-rgb: 106, 27, 154;
    --bs-link-color: #6A1B9A;
    --bs-link-hover-color: #4A148C;
    --secondary: #BA68C8;
    --secondary-dark: #AB47BC;
    --secondary-light: #F3E5F5;
    --accent: #7E57C2;
    --accent-light: #EDE7F6;
}

[data-theme="dark"][data-color-theme="lavender"] {
    --primary: #BA68C8;
    --primary-dark: #AB47BC;
    --primary-light: #3a1a4a;
    --primary-rgb: 186, 104, 200;
    --bs-primary: #BA68C8;
    --bs-primary-rgb: 186, 104, 200;
    --bs-link-color: #BA68C8;
    --bs-link-hover-color: #AB47BC;
    --secondary: #CE93D8;
    --secondary-dark: #BA68C8;
    --secondary-light: #2e1a38;
}

/* Sunset Orange Theme */
[data-color-theme="sunset"] {
    --primary: #D84315;
    --primary-dark: #BF360C;
    --primary-light: #FBE9E7;
    --primary-rgb: 216, 67, 21;
    --bs-primary: #D84315;
    --bs-primary-rgb: 216, 67, 21;
    --bs-link-color: #D84315;
    --bs-link-hover-color: #BF360C;
    --secondary: #FF8A65;
    --secondary-dark: #FF7043;
    --secondary-light: #FFF3E0;
    --accent: #FFA726;
    --accent-light: #FFF8E1;
}

[data-theme="dark"][data-color-theme="sunset"] {
    --primary: #FF7043;
    --primary-dark: #FF5722;
    --primary-light: #4a2315;
    --primary-rgb: 255, 112, 67;
    --bs-primary: #FF7043;
    --bs-primary-rgb: 255, 112, 67;
    --bs-link-color: #FF7043;
    --bs-link-hover-color: #FF5722;
    --secondary: #FFAB91;
    --secondary-dark: #FF8A65;
    --secondary-light: #3a1f15;
}

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

/* Background Utilities */
.bg-wine, .bg-primary-theme, .bg-primary {
    background-color: var(--primary) !important;
    color: var(--text-inverse) !important;
}

.bg-wine-light, .bg-primary-light {
    background-color: var(--primary-light) !important;
    color: var(--text-primary) !important;
}

.bg-wine-secondary, .bg-secondary-theme {
    background-color: var(--secondary) !important;
}

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

/* Text Utilities */
.text-wine, .text-primary-theme, .text-primary {
    color: var(--primary) !important;
}

.text-wine-secondary, .text-secondary-theme {
    color: var(--secondary) !important;
}

/* Button Utilities */
.btn-wine, .btn-primary-theme, .btn-primary {
    background-color: var(--primary) !important;
    border-color: var(--primary) !important;
    color: var(--text-inverse) !important;
    font-weight: 600;
    transition: var(--transition-base);
}

.btn-wine:hover,
.btn-wine:focus,
.btn-primary-theme:hover,
.btn-primary-theme:focus,
.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--primary-dark) !important;
    border-color: var(--primary-dark) !important;
    color: var(--text-inverse) !important;
    box-shadow: var(--shadow-primary);
    transform: translateY(-1px);
}

.btn-outline-wine, .btn-outline-primary-theme, .btn-outline-primary {
    border-color: var(--primary) !important;
    color: var(--primary) !important;
    border-width: 2px;
    font-weight: 600;
    background-color: transparent;
}

.btn-outline-wine:hover,
.btn-outline-wine:focus,
.btn-outline-primary-theme:hover,
.btn-outline-primary-theme:focus,
.btn-outline-primary:hover,
.btn-outline-primary:focus {
    background-color: var(--primary) !important;
    border-color: var(--primary) !important;
    color: var(--text-inverse) !important;
}

/* Badge Utilities */
.badge.bg-wine, .badge.bg-primary-theme {
    background-color: var(--primary) !important;
    color: var(--text-inverse) !important;
}

.badge.bg-wine-secondary, .badge.bg-secondary-theme {
    background-color: var(--secondary) !important;
    color: var(--text-primary) !important;
}

/* Border Utilities */
.border-wine, .border-primary-theme, .border-primary {
    border-color: var(--primary) !important;
}

/* Alert Utilities */
.alert-primary {
    background-color: var(--primary-light) !important;
    border-color: var(--primary) !important;
    color: var(--primary-dark) !important;
}

/* Link Utilities */
.link-primary {
    color: var(--primary) !important;
}

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

/* Navbar Link Utilities */
.navbar-light .navbar-nav .nav-link {
    color: var(--text-primary) !important;
}

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

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

/* Dropdown Link Utilities */
.dropdown-item.active,
.dropdown-item:active {
    background-color: var(--primary) !important;
    color: var(--text-inverse) !important;
}

/* Tab Utilities */
.nav-tabs .nav-link.active {
    color: var(--primary) !important;
    border-color: var(--border-color) var(--border-color) var(--bg-primary) !important;
}

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

/* ============================================
   WCAG 3 ACCESSIBILITY ENHANCEMENTS
   ============================================ */

/* Enhanced Focus Indicators */
*:focus {
    outline: none;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: var(--focus-ring-width) solid var(--primary);
    outline-offset: var(--focus-ring-offset);
    box-shadow: var(--focus-ring);
    transition: outline 0.1s ease-in-out;
}

/* High Contrast Focus for Keyboard Navigation */
.keyboard-nav *:focus {
    outline: 3px solid var(--primary);
    outline-offset: 3px;
}

/* Form Controls */
.form-control,
.form-select {
    border: 2px solid var(--border-color);
    transition: var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: var(--focus-ring);
}

/* Invalid States - High Contrast */
.form-control:invalid,
.form-select:invalid,
.is-invalid {
    border-color: #DC3545 !important;
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.25) !important;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb {
    background: var(--secondary);
    border-radius: 6px;
    border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-dark);
}

/* Skip to Main Content Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: var(--text-inverse);
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 0 0 4px 0;
    z-index: 10000;
    font-weight: 600;
}

.skip-link:focus {
    top: 0;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --shadow-sm: none;
        --shadow-md: none;
        --shadow-lg: none;
    }

    .card,
    .btn,
    .form-control,
    .form-select {
        border-width: 2px !important;
        border-color: var(--text-primary) !important;
    }

    .btn-outline-wine,
    .btn-outline-primary-theme {
        border-width: 3px !important;
    }
}

/* Smooth Theme Transitions */
body {
    background-color: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Hero Section Dark Mode */
[data-theme="dark"] .hero-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%) !important;
}

/* Card and Component Backgrounds */
.card {
    background-color: var(--bg-secondary) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
    transition: var(--transition-base);
}

.card-footer {
    background-color: var(--bg-tertiary) !important;
    border-top-color: var(--border-color) !important;
}

[data-theme="dark"] .card-footer.bg-light {
    background-color: var(--bg-tertiary) !important;
}

/* List Group Dark Mode */
.list-group-item {
    background-color: var(--bg-secondary) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

.list-group-item:hover {
    background-color: var(--bg-tertiary) !important;
}

.modal-content {
    background-color: var(--bg-primary) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

.modal-header {
    background-color: var(--primary) !important;
    color: var(--text-inverse) !important;
}

/* Dropdown menus - ensure they appear above everything */
.dropdown-menu {
    z-index: 1050 !important;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2) !important;
    border: 1px solid var(--border-color);
}

/* Dropdown menus in dark mode */
[data-theme="dark"] .dropdown-menu {
    background-color: var(--bg-secondary) !important;
    border-color: var(--border-color) !important;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6) !important;
}

[data-theme="dark"] .dropdown-item {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .dropdown-item:hover,
[data-theme="dark"] .dropdown-item:focus {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
}

/* Navbar Dark Mode Support */
.navbar-dark {
    background-color: var(--primary) !important;
}

/* Input fields in dark mode */
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background-color: var(--bg-tertiary) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .form-control::placeholder {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .input-group-text {
    background-color: var(--bg-tertiary) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

/* Footer */
footer {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] footer {
    background-color: var(--bg-secondary) !important;
}

/* Text Muted in Dark Mode */
.text-muted {
    color: var(--text-muted) !important;
}

/* Links */
a {
    color: var(--primary);
    transition: var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* Alert Components */
.alert-info {
    background-color: var(--primary-light);
    border-color: var(--primary);
    color: var(--text-primary);
}

[data-theme="dark"] .alert-info {
    background-color: rgba(var(--primary-rgb), 0.2);
    border-color: var(--primary);
}

/* Results section in dark mode */
[data-theme="dark"] .results-section {
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.15) 0%, rgba(var(--primary-rgb), 0.08) 100%) !important;
}

[data-theme="dark"] .result-item {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
}

/* ============================================
   HIGH CONTRAST MODE
   ============================================ */

.high-contrast {
    /* Increase all contrasts */
    --border-color: var(--text-primary) !important;
}

.high-contrast .card,
.high-contrast .btn,
.high-contrast .form-control,
.high-contrast .form-select {
    border-width: 3px !important;
    border-color: var(--text-primary) !important;
}

.high-contrast .btn-outline-wine,
.high-contrast .btn-outline-primary-theme {
    border-width: 3px !important;
}

.high-contrast a {
    text-decoration: underline !important;
    font-weight: 600 !important;
}

/* High contrast in dark mode */
[data-theme="dark"].high-contrast {
    --bg-primary: #000000 !important;
    --bg-secondary: #0A0A0A !important;
    --bg-tertiary: #1A1A1A !important;
    --text-primary: #FFFFFF !important;
    --primary: #FF6B7A !important;
}

/* ============================================
   LARGE TEXT MODE
   ============================================ */

.large-text {
    font-size: 18px !important;
}

.large-text h1 { font-size: 2.75rem !important; }
.large-text h2 { font-size: 2.25rem !important; }
.large-text h3 { font-size: 1.875rem !important; }
.large-text h4 { font-size: 1.625rem !important; }
.large-text h5 { font-size: 1.375rem !important; }
.large-text h6 { font-size: 1.125rem !important; }
.large-text .btn { font-size: 1.125rem !important; }
.large-text .form-control,
.large-text .form-select { font-size: 1.125rem !important; }