/* ========================================
   CSS Variables for Light/Dark Theme
   ======================================== */

:root {
    /* Light Mode Colors */
    --bg-gradient-start: #667eea;
    --bg-gradient-end: #764ba2;
    --card-bg: #ffffff;
    --card-shadow: rgba(0, 0, 0, 0.1);
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --info-section-bg: #f8f9fa;
    --code-bg: #f8f9fa;
    --code-color: #764ba2;
    --table-header-bg: #e9ecef;
    --input-bg: #ffffff;
    --input-text: #212529;
    --primary-color: #667eea;
    --primary-hover: #5568d3;
}

body.dark-mode {
    /* Dark Mode Colors */
    --bg-gradient-start: #1a1a2e;
    --bg-gradient-end: #16213e;
    --card-bg: #0f3460;
    --card-shadow: rgba(0, 0, 0, 0.5);
    --text-primary: #e4e4e4;
    --text-secondary: #b0b0b0;
    --border-color: #2d4263;
    --info-section-bg: #162447;
    --code-bg: #162447;
    --code-color: #9d7dca;
    --table-header-bg: #1b2845;
    --input-bg: #1b2845;
    --input-text: #e4e4e4;
    --primary-color: #7b8ff7;
    --primary-hover: #6a7ed6;
}

/* ========================================
   Base Styles
   ======================================== */

body {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding: 20px 0;
    color: var(--text-primary);
    transition: background 0.3s ease, color 0.3s ease;
}

.card {
    border-radius: 15px;
    border: none;
    background-color: var(--card-bg);
    box-shadow: 0 10px 30px var(--card-shadow);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.card-header {
    border-radius: 15px 15px 0 0 !important;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--bg-gradient-end) 100%) !important;
    border: none !important;
}

.card-body {
    padding: 2rem;
    background-color: var(--card-bg);
    color: var(--text-primary);
}

/* ========================================
   Dark Mode Toggle Button
   ======================================== */

#dark-mode-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    border-radius: 50px;
    padding: 0.6rem 1.2rem;
    font-size: 1.2rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

#dark-mode-toggle:hover {
    transform: scale(1.1);
    background: rgba(255, 255, 255, 0.3);
}

/* ========================================
   Forms & Inputs
   ======================================== */

.form-control,
.form-select {
    background-color: var(--input-bg);
    color: var(--input-text);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.form-control::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.form-label {
    color: var(--text-primary);
}

.form-text {
    color: var(--text-secondary);
}

/* ========================================
   Buttons
   ======================================== */

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--bg-gradient-end) 100%);
    border: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
    background: linear-gradient(135deg, var(--primary-hover) 0%, #65408b 100%);
}

.btn-success {
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(40, 167, 69, 0.4);
}

/* ========================================
   Alerts
   ======================================== */

.alert {
    border: 1px solid var(--border-color);
}

body.dark-mode .alert-light {
    background-color: var(--info-section-bg);
    color: var(--text-primary);
    border-color: var(--border-color);
}

body.dark-mode .alert-info {
    background-color: #1e3a5f;
    color: #b3d4fc;
    border-color: #2d5a8c;
}

body.dark-mode .alert-success {
    background-color: #1e4d2b;
    color: #a8e6b8;
    border-color: #2d7a3f;
}

body.dark-mode .alert-danger {
    background-color: #5c1e1e;
    color: #f8b4b4;
    border-color: #8c2d2d;
}

/* ========================================
   Info Section & Code
   ======================================== */

.info-section {
    background-color: var(--info-section-bg);
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
    transition: background-color 0.3s ease;
}

.info-section ul li {
    padding: 0.3rem 0;
    color: var(--text-primary);
}

code {
    background-color: var(--code-bg);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    color: var(--code-color);
    font-size: 0.9em;
}

/* ========================================
   Tables
   ======================================== */

.result-info {
    background-color: var(--info-section-bg);
    padding: 1.5rem;
    border-radius: 10px;
}

.table {
    margin-bottom: 0;
    color: var(--text-primary);
}

.table th {
    background-color: var(--table-header-bg);
    font-weight: 600;
    color: var(--text-primary);
}

.table td {
    color: var(--text-primary);
    border-color: var(--border-color);
}

.table tbody tr {
    border-color: var(--border-color);
}

/* ========================================
   Dark Mode - Calculation Box
   ======================================== */

body.dark-mode .card.border-success {
    border: 1px solid #2d7a3f !important;
}

body.dark-mode .card-header.bg-success {
    background: linear-gradient(135deg, #2d7a3f 0%, #1e4d2b 100%) !important;
}

body.dark-mode .text-success {
    color: #a8e6b8 !important;
}

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

body.dark-mode .text-muted {
    color: var(--text-secondary) !important;
}

/* ========================================
   Dark Mode - Text Colors
   ======================================== */

body.dark-mode h1,
body.dark-mode h2,
body.dark-mode h3,
body.dark-mode h4,
body.dark-mode h5,
body.dark-mode h6 {
    color: var(--text-primary);
}

body.dark-mode .text-white {
    color: #ffffff !important;
}

body.dark-mode small {
    color: var(--text-secondary);
}

/* ========================================
   Spinner
   ======================================== */

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    margin-right: 0.5rem;
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .card-body {
        padding: 1.5rem;
    }

    #dark-mode-toggle {
        top: 10px;
        right: 10px;
        padding: 0.5rem 1rem;
        font-size: 1rem;
    }
}

/* ========================================
   Smooth Transitions
   ======================================== */

* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

button,
a,
.btn {
    transition: all 0.2s ease !important;
}

/* ========================================
   Dark Mode - Data Update Alert Box Fix
   ======================================== */

/* Light mode - explicit background */
.alert-light.border-primary {
    background-color: #f8f9fa;
}

/* Dark mode override */
body.dark-mode .alert-light.border-primary {
    background-color: var(--info-section-bg);
    border-color: var(--primary-color) !important;
}

body.dark-mode .alert-light .text-muted {
    color: var(--text-secondary) !important;
}

body.dark-mode .alert-light .text-primary {
    color: var(--primary-color) !important;
}

/* ========================================
   Dark Mode - Calculation Box Fix
   ======================================== */

/* Fix calculation box table in dark mode */
body.dark-mode #calculation-box .table {
    color: var(--text-primary) !important;
}

body.dark-mode #calculation-box .table td,
body.dark-mode #calculation-box .table th {
    color: var(--text-primary) !important;
    background-color: transparent !important;
    border-color: rgba(255, 255, 255, 0.1) !important;
}

body.dark-mode #calculation-box .table strong {
    color: var(--text-primary) !important;
}

body.dark-mode #calculation-box .card-body {
    background-color: var(--card-bg);
}

body.dark-mode #calculation-box .text-success {
    color: #a8e6b8 !important;
}

body.dark-mode #calculation-box .text-muted {
    color: var(--text-secondary) !important;
}

/* Fix calculation box header */
body.dark-mode #calculation-box.card {
    background-color: var(--card-bg);
}

/* ========================================
   Dark Mode - Result Page Fixes
   ======================================== */

/* Fix success alert box */
body.dark-mode .alert-success {
    background-color: #1e4d2b !important;
    color: #a8e6b8 !important;
    border-color: #2d7a3f !important;
}

body.dark-mode .alert-success .alert-heading {
    color: #a8e6b8 !important;
}

/* Fix info alert box */
body.dark-mode .alert-info {
    background-color: #1e3a5f !important;
    color: #b3d4fc !important;
    border-color: #2d5a8c !important;
}

/* Fix result info section */
body.dark-mode .result-info {
    background-color: var(--info-section-bg) !important;
}

/* Fix details table */
body.dark-mode .result-info .table {
    color: var(--text-primary);
    background-color: transparent;
}

body.dark-mode .result-info .table th {
    background-color: var(--table-header-bg);
    color: var(--text-primary);
}

body.dark-mode .result-info .table td {
    color: var(--text-primary);
    border-color: var(--border-color);
}

/* Fix code elements */
body.dark-mode code {
    background-color: var(--code-bg);
    color: var(--code-color);
}

/* Fix buttons */
body.dark-mode .btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

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

/* ========================================
   Dark Mode - Result Page Table Additional Fixes
   ======================================== */

/* Force all table cells to have proper colors in result page */
body.dark-mode .result-info .table td strong,
body.dark-mode .result-info .table th {
    color: var(--text-primary) !important;
}

/* Fix table bordered style */
body.dark-mode .table-bordered {
    border-color: var(--border-color) !important;
}

body.dark-mode .table-bordered th,
body.dark-mode .table-bordered td {
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

/* Ensure no white backgrounds leak through */
body.dark-mode .card .table {
    background-color: transparent !important;
}

body.dark-mode .card .table tbody {
    background-color: transparent !important;
}

body.dark-mode .card .table tbody tr {
    background-color: transparent !important;
}

body.dark-mode .card .table tbody td {
    background-color: transparent !important;
}

/* ========================================
   Design Preview Cards
   ======================================== */

.design-preview-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.design-preview-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px var(--card-shadow);
    border-color: var(--primary-color);
}

.preview-mockup {
    background: #f5f5f5;
    height: 140px;
    border-bottom: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

body.dark-mode .preview-mockup {
    background: #1a1a2e;
}

.preview-label {
    padding: 15px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.preview-label strong {
    color: var(--text-primary);
    font-size: 16px;
    display: block;
}

.preview-label small {
    color: var(--text-secondary);
    font-size: 13px;
    display: block;
}

.preview-cta {
    margin-top: 8px;
    font-size: 12px;
    color: var(--primary-color);
    font-weight: 500;
    padding: 6px 12px;
    background: var(--info-section-bg);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.design-preview-card:hover .preview-cta {
    background: var(--primary-color);
    color: white;
}

/* Variant-specific hover effects */
.design-preview-card.classic:hover {
    border-color: #4455b2;
}

.design-preview-card.minimalist:hover {
    border-color: #667eea;
}

.design-preview-card.cards:hover {
    border-color: #764ba2;
}

.design-preview-card.professional:hover {
    border-color: #2c5282;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .design-preview-card {
        margin-bottom: 15px;
    }

    .preview-mockup {
        height: 120px;
    }
}