/* ==========================================
   Cooperative Loan Calculator CSS Styling
   Aesthetics: Premium, Modern, Responsive
   Theme: Emerald Green (Growth & Wealth)
   ========================================== */

/* Design Tokens & Theme Variables */
:root {
    /* Color Palette - Light Mode Default */
    --bg-primary: #f4f7f5;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --border-color: #e2e8e5;
    --border-focus: #10b981;
    
    --text-primary: #1e2925;
    --text-secondary: #64746f;
    --text-inverse: #ffffff;
    
    --primary: #10b981;
    --primary-light: #d1fae5;
    --primary-hover: #059669;
    --primary-glow: rgba(16, 185, 129, 0.2);
    
    --accent-blue: #3b82f6;
    --accent-blue-light: #dbeafe;
    --accent-orange: #f97316;
    --accent-orange-light: #ffedd5;
    --accent-green: #10b981;
    --accent-green-light: #d1fae5;
    --accent-purple: #8b5cf6;
    --accent-purple-light: #ede9fe;
    
    --alert-error-bg: #fee2e2;
    --alert-error-text: #b91c1c;
    --alert-error-border: #fca5a5;
    --alert-success-bg: #d1fae5;
    --alert-success-text: #065f46;
    
    /* Effects & Layouts */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Glassmorphism overlays */
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.6);
    --glass-blur: 12px;
}

/* Dark Mode Variables */
body.dark {
    --bg-primary: #0a0f0d;
    --bg-secondary: #121815;
    --bg-card: #171f1b;
    --border-color: #26332d;
    --border-focus: #34d399;
    
    --text-primary: #ecf3f0;
    --text-secondary: #94a8a0;
    --text-inverse: #0a0f0d;
    
    --primary: #34d399;
    --primary-light: #064e3b;
    --primary-hover: #10b981;
    --primary-glow: rgba(52, 211, 153, 0.15);
    
    --accent-blue: #60a5fa;
    --accent-blue-light: #1e3a8a;
    --accent-orange: #fb923c;
    --accent-orange-light: #7c2d12;
    --accent-green: #34d399;
    --accent-green-light: #064e3b;
    --accent-purple: #a78bfa;
    --accent-purple-light: #4c1d95;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    
    --glass-bg: rgba(23, 31, 27, 0.85);
    --glass-border: rgba(255, 255, 255, 0.05);
}

/* General Reset & Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Sarabun', 'Prompt', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    padding: 0;
    margin: 0;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* App Container */
.app-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    gap: 24px;
}

/* Header Component */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, #10b981, #064e3b);
    padding: 28px 32px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.app-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    transform: rotate(30deg);
    pointer-events: none;
}

.header-logo-title {
    display: flex;
    align-items: center;
    gap: 20px;
    color: #ffffff;
    z-index: 1;
}

.logo-icon {
    font-size: 36px;
    background: rgba(255, 255, 255, 0.15);
    width: 64px;
    height: 64px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    animation: pulseGlow 3s infinite alternate;
}

@keyframes pulseGlow {
    0% { box-shadow: 0 0 5px rgba(255, 255, 255, 0.2); }
    100% { box-shadow: 0 0 18px rgba(255, 255, 255, 0.4); }
}

.header-text h1 {
    font-family: 'Prompt', sans-serif;
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 4px;
    letter-spacing: -0.5px;
}

.header-text .subtitle {
    font-size: 14px;
    color: #e6f7f2;
    font-weight: 300;
}

.header-actions {
    z-index: 1;
}

.theme-toggle-btn {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #ffffff;
    padding: 10px 18px;
    border-radius: 30px;
    cursor: pointer;
    font-family: 'Prompt', sans-serif;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
}

.theme-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-1px);
}

.theme-toggle-btn:active {
    transform: translateY(1px);
}

/* Layout Content Grid */
.main-content {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 24px;
    align-items: start;
}

/* Left Sidebar (Inputs Form) */
.sidebar-inputs {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Input Cards styling */
.input-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
    overflow: hidden;
}

.input-card:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(16, 185, 129, 0.2);
}

.card-header {
    padding: 16px 20px;
    background-color: rgba(0, 0, 0, 0.01);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

body.dark .card-header {
    background-color: rgba(255, 255, 255, 0.01);
}

.card-header h3 {
    font-family: 'Prompt', sans-serif;
    font-size: 16px;
    font-weight: 600;
}

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

.card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Form inputs & controls */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.input-wrapper {
    display: flex;
    align-items: center;
    position: relative;
    border: 1.5px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--bg-secondary);
    transition: var(--transition-fast);
}

.input-wrapper:focus-within {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.input-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 100%;
    color: var(--text-secondary);
    font-size: 15px;
    border-right: 1px solid var(--border-color);
    background-color: rgba(0, 0, 0, 0.01);
}

body.dark .input-icon {
    background-color: rgba(255, 255, 255, 0.01);
}

.input-wrapper input, .input-wrapper select {
    flex: 1;
    border: none;
    outline: none;
    padding: 12px 14px;
    font-size: 15px;
    font-family: 'Sarabun', sans-serif;
    background-color: transparent;
    color: var(--text-primary);
    width: 100%;
}

.input-wrapper select {
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364746f'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 16px;
    padding-right: 40px;
}

body.dark .input-wrapper select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a8a0'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
}

.form-row {
    display: flex;
    gap: 12px;
}

.form-row .col {
    flex: 1;
}

/* Premium Payment Method Selector (Segment Control) */
.payment-method-toggle {
    display: flex;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 4px;
    border-radius: var(--border-radius-md);
    gap: 4px;
}

.payment-method-toggle input[type="radio"] {
    display: none;
}

.toggle-option {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 6px;
    font-family: 'Prompt', sans-serif;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    text-align: center;
    transition: var(--transition-fast);
}

.toggle-option i {
    font-size: 16px;
}

.payment-method-toggle input[type="radio"]:checked + .toggle-option {
    background-color: var(--bg-card);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(16, 185, 129, 0.15);
}

.help-text {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* Sidebar action buttons */
.action-buttons-group {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

.btn {
    font-family: 'Prompt', sans-serif;
    font-size: 15px;
    font-weight: 500;
    padding: 14px 20px;
    border-radius: var(--border-radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--text-inverse);
    box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 6px 20px var(--primary-glow);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(1px);
}

.btn-secondary {
    background-color: var(--bg-card);
    border: 1.5px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--bg-primary);
    border-color: var(--text-secondary);
}

.btn-block {
    flex: 1;
}

/* Right Dashboard Panel */
.dashboard-results {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* KPI Cards Layout */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.kpi-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.kpi-icon.accent-blue {
    background-color: var(--accent-blue-light);
    color: var(--accent-blue);
}

.kpi-icon.accent-orange {
    background-color: var(--accent-orange-light);
    color: var(--accent-orange);
}

.kpi-icon.accent-green {
    background-color: var(--accent-green-light);
    color: var(--accent-green);
}

.kpi-icon.accent-purple {
    background-color: var(--accent-purple-light);
    color: var(--accent-purple);
}

.kpi-info {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
}

.kpi-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
}

.kpi-value {
    font-family: 'Prompt', sans-serif;
    font-size: 20px;
    font-weight: 700;
    margin: 2px 0;
    color: var(--text-primary);
}

.kpi-desc {
    font-size: 11px;
    color: var(--text-secondary);
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
}

.salary-alert-badge {
    display: inline-block;
    padding: 3px 8px;
    font-size: 10px;
    font-weight: 600;
    border-radius: 12px;
    background-color: var(--border-color);
    color: var(--text-secondary);
    text-align: center;
    width: fit-content;
}

.salary-alert-badge.safe {
    background-color: var(--alert-success-bg);
    color: var(--alert-success-text);
}

.salary-alert-badge.warn {
    background-color: var(--alert-error-bg);
    color: var(--alert-error-text);
    animation: softPulse 2s infinite;
}

@keyframes softPulse {
    0% { opacity: 0.85; }
    50% { opacity: 1; box-shadow: 0 0 8px var(--alert-error-border); }
    100% { opacity: 0.85; }
}

/* Alert Banner Warning */
.alert-banner {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background-color: var(--alert-error-bg);
    color: var(--alert-error-text);
    border: 1px solid var(--alert-error-border);
    padding: 16px 20px;
    border-radius: var(--border-radius-md);
    transition: var(--transition-normal);
}

.alert-banner.hidden {
    display: none;
}

.alert-icon {
    font-size: 22px;
    margin-top: 2px;
}

.alert-content h4 {
    font-family: 'Prompt', sans-serif;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
}

.alert-content p {
    font-size: 13px;
    line-height: 1.5;
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.chart-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chart-header h4 {
    font-family: 'Prompt', sans-serif;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-body {
    position: relative;
    width: 100%;
}

.donut-chart-container {
    height: 250px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.line-chart-container {
    height: 250px;
}

/* Amortization Table Card */
.results-table-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header-actions {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.table-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.table-title h3 {
    font-family: 'Prompt', sans-serif;
    font-size: 16px;
    font-weight: 600;
}

.table-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-box {
    display: flex;
    align-items: center;
    background-color: var(--bg-primary);
    border: 1.5px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 0 12px;
    width: 180px;
    transition: var(--transition-fast);
}

.search-box:focus-within {
    border-color: var(--border-focus);
    width: 220px;
}

.search-box i {
    color: var(--text-secondary);
    font-size: 13px;
    margin-right: 8px;
}

.search-box input {
    border: none;
    outline: none;
    background: transparent;
    padding: 8px 0;
    font-size: 13px;
    color: var(--text-primary);
    font-family: 'Sarabun', sans-serif;
    width: 100%;
}

.btn-sm {
    padding: 8px 14px;
    font-size: 13px;
    border-radius: var(--border-radius-md);
}

/* Responsive Amortization Table */
.table-responsive-container {
    max-height: 480px;
    overflow-y: auto;
    border-bottom: 1px solid var(--border-color);
}

.amortization-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 13.5px;
}

.amortization-table th {
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    font-family: 'Prompt', sans-serif;
    font-weight: 500;
    padding: 12px 16px;
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 1px 0 var(--border-color);
}

body.dark .amortization-table th {
    background-color: var(--bg-secondary);
}

.amortization-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.amortization-table tbody tr {
    transition: var(--transition-fast);
}

.amortization-table tbody tr:hover {
    background-color: rgba(16, 185, 129, 0.03);
}

.amortization-table tbody tr:nth-child(even) {
    background-color: rgba(0, 0, 0, 0.005);
}

body.dark .amortization-table tbody tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.005);
}

.empty-table {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px !important;
    font-style: italic;
}

/* Footer Summary Row below table */
.table-footer-summary {
    background-color: var(--bg-primary);
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    border-top: 1px solid var(--border-color);
}

body.dark .table-footer-summary {
    background-color: var(--bg-secondary);
}

.summary-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.summary-item span {
    font-size: 11px;
    color: var(--text-secondary);
}

.summary-item strong {
    font-family: 'Prompt', sans-serif;
    font-size: 15px;
    font-weight: 600;
}

.summary-item.highlight-green strong {
    color: var(--primary);
}

/* Footer Component */
.app-footer {
    text-align: center;
    padding: 30px 20px;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.app-footer p {
    font-size: 13px;
}

.app-footer .disclaimer {
    font-size: 11px;
    max-width: 900px;
    margin: 0 auto;
    opacity: 0.8;
    line-height: 1.4;
}

/* Scrollbars styling for premium feel */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

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

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

@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 340px 1fr;
    }
    
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .sidebar-inputs {
        max-width: 100%;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .app-container {
        padding: 12px;
    }
    
    .app-header {
        padding: 20px;
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .logo-icon {
        width: 50px;
        height: 50px;
        font-size: 26px;
    }
    
    .header-text h1 {
        font-size: 18px;
    }
    
    .kpi-grid {
        grid-template-columns: 1fr;
    }
    
    .card-header-actions {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .table-actions {
        width: 100%;
        justify-content: space-between;
        flex-wrap: wrap;
    }
    
    .search-box {
        width: 100%;
    }
    
    .form-row {
        flex-direction: column;
        gap: 0;
    }
}

/* ==========================================
   Print Optimization
   ========================================== */
@media print {
    body {
        background-color: #ffffff !important;
        color: #000000 !important;
        font-size: 11px;
    }
    
    /* Hide non-printable elements */
    .theme-toggle-btn,
    .sidebar-inputs,
    .table-actions,
    .app-footer,
    #themeToggle {
        display: none !important;
    }
    
    /* Layout adjustments */
    .app-container {
        padding: 0;
        gap: 12px;
    }
    
    .app-header {
        background: none !important;
        color: #000000 !important;
        border-bottom: 2px solid #000000;
        padding: 10px 0;
        border-radius: 0;
        box-shadow: none;
    }
    
    .header-logo-title {
        color: #000000 !important;
    }
    
    .logo-icon {
        border-color: #000000 !important;
        color: #000000 !important;
        background: none !important;
        animation: none !important;
    }
    
    .header-text .subtitle {
        color: #555555 !important;
    }
    
    .main-content {
        grid-template-columns: 1fr;
    }
    
    /* Print Friendly KPIs */
    .kpi-grid {
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 8px;
    }
    
    .kpi-card {
        border: 1px solid #cccccc !important;
        padding: 10px !important;
        background: none !important;
        box-shadow: none !important;
        transform: none !important;
    }
    
    .kpi-icon {
        display: none !important;
    }
    
    .kpi-value {
        font-size: 14px !important;
    }
    
    /* Charts printing */
    .charts-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 12px;
        page-break-inside: avoid;
    }
    
    .chart-card {
        padding: 10px !important;
        border: 1px solid #cccccc !important;
        box-shadow: none !important;
    }
    
    .donut-chart-container, .line-chart-container {
        height: 180px !important;
    }
    
    /* Table printing */
    .results-table-card {
        border: none !important;
        box-shadow: none !important;
    }
    
    .card-header-actions {
        padding: 10px 0 !important;
        border: none !important;
    }
    
    .table-responsive-container {
        max-height: none !important;
        overflow: visible !important;
    }
    
    .amortization-table {
        font-size: 10px !important;
    }
    
    .amortization-table th {
        background-color: #eeeeee !important;
        color: #000000 !important;
        border-bottom: 2px solid #000000 !important;
        position: static !important;
    }
    
    .amortization-table td {
        padding: 6px 8px !important;
        border-bottom: 1px solid #dddddd !important;
    }
    
    .table-footer-summary {
        background: #eeeeee !important;
        border: 1px solid #cccccc !important;
        padding: 12px !important;
        page-break-inside: avoid;
    }
}