/* ==============================================
   Nepal Land Area Calculator - Styles
   Inspired by Nepali brick architecture & geometry
   ============================================== */

:root {
    /* Core Palette - Terracotta & Slate */
    --primary: #C45C3B;
    --primary-light: #E07B5A;
    --primary-dark: #9E4A30;
    --accent: #2B5F7C;
    --accent-light: #3D7A9C;
    
    /* Neutrals - Dark Mode (Default) */
    --bg-dark: #1A1D21;
    --bg-card: #22262B;
    --bg-elevated: #2A2F35;
    --bg-input: #1E2227;
    --border: #3A3F47;
    --border-light: #4A5058;
    
    /* Text - Dark Mode */
    --text-primary: #F5F5F5;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;
    
    /* Semantic */
    --success: #4ADE80;
    --warning: #FBBF24;
    --info: #60A5FA;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    
    /* Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

/* Light Mode Theme */
[data-theme="light"] {
    --bg-dark: #F5F7FA;
    --bg-card: #FFFFFF;
    --bg-elevated: #F0F2F5;
    --bg-input: #E8EAED;
    --border: #D1D5DB;
    --border-light: #B8BCC4;
    
    --text-primary: #1F2937;
    --text-secondary: #4B5563;
    --text-muted: #6B7280;
    
    --success: #22C55E;
    --accent: #1E4D6B;
    --accent-light: #2B6B8F;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.125rem; }
h4 { font-size: 1rem; }

code {
    font-family: 'DM Mono', monospace;
    background: var(--bg-input);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

/* App Container */
.app-container {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Background Pattern - Geometric Brick */
.bg-pattern {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: 
        linear-gradient(135deg, rgba(196, 92, 59, 0.03) 0%, transparent 50%),
        linear-gradient(225deg, rgba(43, 95, 124, 0.03) 0%, transparent 50%),
        repeating-linear-gradient(
            90deg,
            transparent 0px,
            transparent 40px,
            rgba(196, 92, 59, 0.02) 40px,
            rgba(196, 92, 59, 0.02) 41px
        ),
        repeating-linear-gradient(
            0deg,
            transparent 0px,
            transparent 40px,
            rgba(196, 92, 59, 0.02) 40px,
            rgba(196, 92, 59, 0.02) 41px
        ),
        var(--bg-dark);
    animation: patternShift 30s linear infinite;
    transition: background var(--transition-slow);
}

[data-theme="light"] .bg-pattern {
    background: 
        linear-gradient(135deg, rgba(196, 92, 59, 0.05) 0%, transparent 50%),
        linear-gradient(225deg, rgba(43, 95, 124, 0.05) 0%, transparent 50%),
        repeating-linear-gradient(
            90deg,
            transparent 0px,
            transparent 40px,
            rgba(196, 92, 59, 0.03) 40px,
            rgba(196, 92, 59, 0.03) 41px
        ),
        repeating-linear-gradient(
            0deg,
            transparent 0px,
            transparent 40px,
            rgba(196, 92, 59, 0.03) 40px,
            rgba(196, 92, 59, 0.03) 41px
        ),
        var(--bg-dark);
}

/* Light mode box shadows */
[data-theme="light"] .result-card,
[data-theme="light"] .converter-panel,
[data-theme="light"] .results-panel,
[data-theme="light"] .reference-panel,
[data-theme="light"] .municipality-panel,
[data-theme="light"] .coverage-input-panel,
[data-theme="light"] .coverage-visual,
[data-theme="light"] .far-input-panel,
[data-theme="light"] .floor-visual,
[data-theme="light"] .result-box,
[data-theme="light"] .summary-panel {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

@keyframes patternShift {
    0%, 100% { background-position: 0 0; }
    50% { background-position: 20px 20px; }
}

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-xl);
    background: linear-gradient(180deg, var(--bg-card) 0%, transparent 100%);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--primary);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    gap: var(--space-sm);
    background: var(--bg-input);
    padding: var(--space-xs);
    border-radius: var(--radius-lg);
}

.nav-tab {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-base);
}

.nav-tab:hover {
    color: var(--text-primary);
    background: var(--bg-elevated);
}

.nav-tab.active {
    background: var(--primary);
    color: white;
}

.tab-icon {
    font-size: 1rem;
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

.theme-toggle:hover {
    background: var(--bg-elevated);
    border-color: var(--border-light);
    transform: scale(1.05);
}

.theme-icon {
    font-size: 1.25rem;
    transition: var(--transition-base);
    position: absolute;
}

.theme-icon.sun {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}

.theme-icon.moon {
    opacity: 1;
    transform: rotate(0) scale(1);
}

[data-theme="light"] .theme-icon.sun {
    opacity: 1;
    transform: rotate(0) scale(1);
}

[data-theme="light"] .theme-icon.moon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}

/* Main Content */
.main-content {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--space-xl);
    padding: var(--space-xl);
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* Sections */
.section {
    display: none;
    flex-direction: column;
    gap: var(--space-xl);
    animation: fadeIn 0.4s ease;
}

.section.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-header {
    margin-bottom: var(--space-md);
}

.section-header h1 {
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.section-header p {
    color: var(--text-secondary);
}

/* Region Toggle */
.region-toggle {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.region-btn {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xs);
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-base);
    text-align: left;
}

.region-btn:hover {
    border-color: var(--border-light);
    background: var(--bg-elevated);
}

.region-btn.active {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(196, 92, 59, 0.1) 0%, transparent 100%);
}

.region-icon {
    font-size: 2rem;
}

.region-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.region-units {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Converter Panel */
.converter-panel {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border);
}

.input-group {
    display: none;
}

.input-group.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.input-group h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    font-size: 1rem;
}

.input-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.input-grid.two-col {
    grid-template-columns: repeat(2, 1fr);
}

.standard-inputs {
    display: block !important;
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border);
}

/* Input Fields */
.input-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    position: relative;
}

.input-field label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.input-field input {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: 'DM Mono', monospace;
    font-size: 1.125rem;
    transition: var(--transition-fast);
}

.input-field input:hover {
    border-color: var(--border-light);
}

.input-field input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(196, 92, 59, 0.15);
}

.input-field input::placeholder {
    color: var(--text-muted);
}

.input-field .hint {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.input-field.large {
    flex: 2;
}

.input-row {
    display: flex;
    gap: var(--space-md);
}

/* Results Panel */
.results-panel {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border);
}

.results-panel h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.result-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid var(--border);
    transition: var(--transition-base);
}

.result-card:hover {
    border-color: var(--border-light);
    transform: translateY(-2px);
}

.result-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.result-icon {
    font-size: 1.25rem;
}

.result-label {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.result-value {
    display: flex;
    flex-direction: column;
}

.result-value .primary {
    font-family: 'DM Mono', monospace;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.result-value .secondary {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.result-card.hilly-result .result-value .primary { color: var(--primary-light); }
.result-card.terai-result .result-value .primary { color: var(--success); }
.result-card.sqft-result .result-value .primary { color: var(--accent-light); }
.result-card.sqm-result .result-value .primary { color: var(--warning); }

/* Dimension Visualization */
.dimension-info {
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.dimension-visual {
    flex-shrink: 0;
}

.dimension-box {
    width: 100px;
    height: 100px;
    border: 2px dashed var(--primary);
    border-radius: var(--radius-md);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(196, 92, 59, 0.05);
}

.dim-width {
    position: absolute;
    bottom: -24px;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.dim-height {
    position: absolute;
    right: -40px;
    top: 50%;
    transform: translateY(-50%) rotate(90deg);
    font-family: 'DM Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.dimension-text {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.dim-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.dim-value {
    font-family: 'DM Mono', monospace;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-light);
}

/* Reference Panel */
.reference-panel {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border);
}

.reference-panel h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.reference-tables {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.ref-table h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    font-size: 1rem;
}

.ref-table ul {
    list-style: none;
}

.ref-table li {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.ref-table li:last-child {
    border-bottom: none;
}

.ref-table li strong {
    color: var(--text-primary);
}

/* Municipality Panel */
.municipality-panel {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border);
}

.municipality-panel h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.municipality-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.municipality-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-lg);
    background: var(--bg-elevated);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-base);
    text-align: center;
}

.municipality-btn:hover {
    border-color: var(--border-light);
}

.municipality-btn.active {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(196, 92, 59, 0.1) 0%, transparent 100%);
}

.muni-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.muni-info {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Coverage Input Panel */
.coverage-input-panel {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border);
}

/* Slider */
.slider-container {
    margin-top: var(--space-lg);
}

.slider-container input[type="range"] {
    width: 100%;
    height: 8px;
    background: var(--bg-input);
    border-radius: 4px;
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
}

.slider-container input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(196, 92, 59, 0.4);
    transition: var(--transition-fast);
}

.slider-container input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-sm);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Coverage Visual */
.coverage-visual {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border);
}

.land-plot {
    width: 200px;
    height: 200px;
    background: var(--bg-input);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
}

.built-area {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    transition: height var(--transition-base);
}

.open-area {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 40%;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 8px,
        rgba(74, 222, 128, 0.1) 8px,
        rgba(74, 222, 128, 0.1) 16px
    );
    transition: height var(--transition-base);
}

.plot-labels {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    pointer-events: none;
}

.label-built, .label-open {
    font-family: 'DM Mono', monospace;
    font-size: 1.25rem;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.label-built { color: white; }
.label-open { color: var(--success); }

.visual-legend {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 4px;
}

.legend-color.built {
    background: var(--primary);
}

.legend-color.open {
    background: var(--success);
    opacity: 0.3;
}

/* Coverage Results */
.coverage-results {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.result-box {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.result-box.primary {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(196, 92, 59, 0.1) 0%, var(--bg-card) 100%);
}

.result-box.secondary {
    border-color: var(--success);
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.05) 0%, var(--bg-card) 100%);
}

.result-box.highlight {
    border-color: var(--accent);
    background: linear-gradient(135deg, rgba(43, 95, 124, 0.15) 0%, var(--bg-card) 100%);
}

.result-title {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.result-number {
    font-family: 'DM Mono', monospace;
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.result-box.primary .result-number { color: var(--primary-light); }
.result-box.secondary .result-number { color: var(--success); }
.result-box.highlight .result-number { color: var(--accent-light); }

.result-unit {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* Info Card */
.info-card {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: linear-gradient(135deg, rgba(43, 95, 124, 0.1) 0%, var(--bg-card) 100%);
    border: 1px solid var(--accent);
    border-radius: var(--radius-xl);
}

.info-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.info-content h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.info-content p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* FAR Input Panel */
.far-input-panel {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border);
}

.far-presets {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-lg);
    flex-wrap: wrap;
}

.preset-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.far-preset {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: 'DM Mono', monospace;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.far-preset:hover {
    border-color: var(--border-light);
}

.far-preset.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* Floor Visual */
.floor-visual {
    display: flex;
    gap: var(--space-2xl);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    border: 1px solid var(--border);
    align-items: center;
}

.building-diagram {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-lg);
    position: relative;
}

.floor {
    width: 120px;
    height: 40px;
    background: var(--bg-elevated);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'DM Mono', monospace;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: var(--transition-base);
    opacity: 0.4;
}

.floor.active {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    border-color: var(--accent-light);
    color: white;
    opacity: 1;
}

.ground-line {
    height: 4px;
    background: var(--success);
    border-radius: 2px;
    margin-top: 8px;
}

.floor-info h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.floor-info p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--space-sm);
}

.floor-info ul {
    list-style: none;
    margin-bottom: var(--space-md);
}

.floor-info li {
    padding: var(--space-xs) 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.floor-info li::before {
    content: "→";
    color: var(--accent-light);
}

.floor-info .note {
    font-size: 0.8125rem;
    color: var(--text-muted);
    font-style: italic;
}

/* FAR Results */
.far-results {
    display: grid;
    grid-template-columns: 1fr;
}

/* Summary Panel */
.summary-panel {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    height: fit-content;
    position: sticky;
    top: 100px;
    animation: slideIn 0.5s ease;
}

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

.summary-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border);
}

.summary-header h3 {
    font-size: 1rem;
}

.btn-export {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-export:hover {
    background: var(--primary-dark);
}

.summary-content {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

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

.summary-item.highlight {
    padding: var(--space-md);
    background: linear-gradient(135deg, rgba(43, 95, 124, 0.15) 0%, transparent 100%);
    border-radius: var(--radius-md);
    margin: 0 calc(-1 * var(--space-md));
}

.summary-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.summary-value {
    font-family: 'DM Mono', monospace;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.summary-item.highlight .summary-value {
    color: var(--accent-light);
}

.summary-sub {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.summary-divider {
    height: 1px;
    background: var(--border);
    margin: var(--space-sm) 0;
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--space-xl);
    border-top: 1px solid var(--border);
    background: var(--bg-card);
}

.footer-brand {
    margin-bottom: var(--space-lg);
}

.company-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    padding: var(--space-sm) var(--space-lg);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
}

.company-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(196, 92, 59, 0.3);
}

.company-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 0.875rem;
    color: white;
    letter-spacing: 1px;
}

.company-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    letter-spacing: 0.5px;
}

.footer p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.footer .disclaimer {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.footer .copyright {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: var(--space-md);
}

.footer .copyright a {
    color: var(--primary-light);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer .copyright a:hover {
    color: var(--primary);
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .summary-panel {
        position: relative;
        top: 0;
        order: -1;
    }
}

@media (max-width: 900px) {
    .header {
        flex-wrap: wrap;
        gap: var(--space-md);
        padding: var(--space-md);
    }
    
    .logo {
        flex: 1;
    }
    
    .theme-toggle {
        order: 2;
    }
    
    .nav-tabs {
        width: 100%;
        overflow-x: auto;
        justify-content: flex-start;
        order: 3;
    }
    
    .municipality-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .input-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .reference-tables {
        grid-template-columns: 1fr;
    }
    
    .coverage-visual {
        flex-direction: column;
    }
    
    .floor-visual {
        flex-direction: column;
    }
}

@media (max-width: 600px) {
    .main-content {
        padding: var(--space-md);
    }
    
    .region-toggle {
        grid-template-columns: 1fr;
    }
    
    .input-grid {
        grid-template-columns: 1fr;
    }
    
    .input-row {
        flex-direction: column;
    }
    
    .municipality-grid {
        grid-template-columns: 1fr;
    }
    
    .coverage-results {
        grid-template-columns: 1fr;
    }
    
    .nav-tab {
        padding: var(--space-sm);
        font-size: 0.75rem;
    }
    
    .tab-icon {
        display: none;
    }
    
    .dimension-info {
        flex-direction: column;
        text-align: center;
    }
    
    .far-presets {
        justify-content: center;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Print Styles */
@media print {
    .header,
    .nav-tabs,
    .btn-export,
    .footer {
        display: none;
    }
    
    .main-content {
        display: block;
    }
    
    .section {
        display: block !important;
        page-break-after: always;
    }
    
    .summary-panel {
        position: relative;
        page-break-inside: avoid;
    }
}