/**
 * Wing Foil Setup Calculator - Styles
 * Modern ocean-themed design with smooth animations
 */

/* ===== CSS Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Ocean Color Palette */
    --ocean-dark: #0a1628;
    --ocean-deep: #0f2942;
    --ocean-medium: #1a3a5c;
    --ocean-light: #2563eb;
    --ocean-bright: #3b82f6;
    --ocean-sky: #60a5fa;
    --ocean-foam: #93c5fd;
    
    /* Accent Colors */
    --accent-turquoise: #06b6d4;
    --accent-cyan: #22d3ee;
    --accent-teal: #14b8a6;
    
    /* Result Colors (Orange/Yellow theme) */
    --result-primary: #fb923c;     /* Orange-400 */
    --result-secondary: #fdba74;   /* Orange-300 */
    --result-light: #fed7aa;       /* Orange-200 */
    --result-glow: rgba(251, 146, 60, 0.3);
    
    /* Semantic Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--gray-100);
    background: linear-gradient(135deg, var(--ocean-dark) 0%, var(--ocean-deep) 50%, var(--ocean-medium) 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Animated background waves */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ===== Header ===== */
.header {
    position: relative;
    padding: 2rem 0;
    background: rgba(15, 41, 66, 0.6);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

.header-content {
    text-align: center;
}

.branding-line {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--accent-cyan);
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    opacity: 0.9;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.logo i {
    font-size: 2.5rem;
    color: var(--accent-cyan);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.logo h1 {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--ocean-bright), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--gray-300);
    font-weight: 400;
}

/* ===== Dashboard Layout ===== */
.dashboard {
    position: relative;
    padding: 3rem 0;
    z-index: 1;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 2rem;
    align-items: start;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.section-title i {
    color: var(--accent-cyan);
}

/* Results section specific color */
.results-section .section-title i {
    color: var(--result-primary);
}

/* ===== Controls Section ===== */
.controls-section {
    position: sticky;
    top: 2rem;
}

.control-card {
    background: rgba(26, 58, 92, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: all var(--transition-normal);
}

.control-card:hover {
    border-color: rgba(59, 130, 246, 0.4);
    box-shadow: var(--shadow-glow);
}

.control-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.control-header i {
    font-size: 1.25rem;
    color: var(--ocean-sky);
}

.control-header label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
}

/* Slider Styles */
.slider-container {
    margin-top: 1rem;
}

input[type="range"] {
    width: 100%;
    height: 8px;
    background: linear-gradient(90deg, var(--ocean-light), var(--accent-cyan));
    border-radius: 5px;
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    background: var(--white);
    border: 3px solid var(--accent-cyan);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: all var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 0 15px rgba(34, 211, 238, 0.6);
}

input[type="range"]::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: var(--white);
    border: 3px solid var(--accent-cyan);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: all var(--transition-fast);
}

.slider-value {
    margin-top: 0.75rem;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-cyan);
}

/* Wind Range Specific */
.wind-range {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.wind-input-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.wind-label {
    font-weight: 600;
    color: var(--gray-300);
    min-width: 40px;
}

.wind-value {
    font-weight: 700;
    color: var(--accent-cyan);
    min-width: 35px;
    text-align: right;
}

.wind-average {
    text-align: center;
    padding: 0.75rem;
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-md);
    border: 1px solid rgba(59, 130, 246, 0.3);
    font-size: 1rem;
    color: var(--gray-200);
}

.wind-average strong {
    color: var(--accent-cyan);
    font-size: 1.25rem;
}

/* Select Styles */
select {
    width: 100%;
    padding: 0.875rem 1rem;
    background: rgba(15, 41, 66, 0.8);
    border: 2px solid rgba(59, 130, 246, 0.3);
    border-radius: var(--radius-md);
    color: var(--white);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    outline: none;
}

select:hover {
    border-color: var(--accent-cyan);
}

select:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
}

select option {
    background: var(--ocean-deep);
    color: var(--white);
    padding: 0.5rem;
}

/* Suggest Button */
.suggest-btn {
    background: rgba(34, 211, 238, 0.15);
    border: 1px solid var(--accent-cyan);
    border-radius: var(--radius-md);
    color: var(--accent-cyan);
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-left: auto;
    font-size: 1rem;
}

.suggest-btn:hover {
    background: rgba(34, 211, 238, 0.25);
    transform: scale(1.05);
}

.suggest-btn i {
    animation: pulse 2s ease-in-out infinite;
}

/* Calculate Button */
.calculate-btn {
    width: 100%;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, var(--ocean-bright), var(--accent-cyan));
    border: none;
    border-radius: var(--radius-lg);
    color: var(--white);
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
    margin-top: 1rem;
}

.calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(34, 211, 238, 0.5);
}

.calculate-btn:active {
    transform: translateY(0);
}

.calculate-btn.loading {
    opacity: 0.7;
    cursor: not-allowed;
}

/* ===== Results Section ===== */
.results-section {
    min-height: 500px;
}

/* Warning Messages */
.warnings-container {
    display: none;
    margin-bottom: 2rem;
}

.warning-message {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    font-weight: 500;
    animation: slideIn 0.5s ease;
}

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

.warning-message i {
    font-size: 1.5rem;
}

.warning-info {
    background: rgba(59, 130, 246, 0.2);
    border: 1px solid var(--info);
    color: var(--ocean-foam);
}

.warning-info i {
    color: var(--info);
}

.warning-warning {
    background: rgba(245, 158, 11, 0.2);
    border: 1px solid var(--warning);
    color: #fbbf24;
}

.warning-warning i {
    color: var(--warning);
}

.warning-danger {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid var(--danger);
    color: #fca5a5;
}

.warning-danger i {
    color: var(--danger);
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.result-card {
    background: rgba(26, 58, 92, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(251, 146, 60, 0.25);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    display: flex;
    gap: 1.25rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--result-primary), var(--result-secondary));
    transition: width var(--transition-normal);
}

.result-card:hover {
    border-color: rgba(251, 146, 60, 0.4);
    box-shadow: 0 10px 15px -3px var(--result-glow);
}

.result-card:hover::before {
    width: 8px;
}

.result-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    background: rgba(251, 146, 60, 0.15);
    flex-shrink: 0;
}

.result-icon i {
    font-size: 1.75rem;
    color: var(--result-primary);
}

.result-content {
    flex: 1;
}

.result-content h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-300);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.result-value {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.big-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--result-secondary);
    line-height: 1;
    text-shadow: 0 0 20px var(--result-glow);
}

.unit {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-400);
}

.result-range {
    font-size: 0.875rem;
    color: var(--gray-400);
}

.result-type {
    margin-top: 0.5rem;
}

/* Top Speed Specific */
.unit-secondary {
    font-size: 0.9rem;
    color: var(--gray-400);
    margin-left: 0.5rem;
}

.result-label {
    margin-top: 0.75rem;
}

.speed-label {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    animation: pulse-glow 2s ease-in-out infinite;
}

/* Speed Categories Colors */
.speed-cruising {
    background: rgba(59, 130, 246, 0.2);
    color: var(--ocean-sky);
    border: 1px solid var(--ocean-bright);
}

.speed-fast {
    background: rgba(251, 146, 60, 0.2);
    color: var(--result-secondary);
    border: 1px solid var(--result-primary);
}

.speed-adrenaline {
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
    border: 1px solid var(--warning);
}

.speed-race {
    background: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
    border: 1px solid var(--danger);
    font-weight: 800;
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 5px var(--result-glow);
    }
    50% {
        box-shadow: 0 0 15px var(--result-glow);
    }
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-low {
    background: rgba(251, 146, 60, 0.2);
    color: var(--result-secondary);
    border: 1px solid var(--result-primary);
}

.badge-mid {
    background: rgba(251, 146, 60, 0.2);
    color: var(--result-light);
    border: 1px solid var(--result-secondary);
}

.badge-high {
    background: rgba(251, 146, 60, 0.25);
    color: #fed7aa;
    border: 1px solid var(--result-primary);
}

/* ===== Board Recommendation Section ===== */
.board-section {
    margin-bottom: 2rem;
}

.board-title {
    color: var(--white);
    margin-bottom: 1.5rem;
}

.board-title i {
    color: var(--accent-cyan);
}

.board-card {
    background: rgba(26, 58, 92, 0.6);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(6, 182, 212, 0.3);
    border-radius: var(--radius-xl);
    padding: 2rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.board-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-turquoise));
}

.board-card:hover {
    border-color: rgba(6, 182, 212, 0.5);
    box-shadow: 0 10px 20px rgba(6, 182, 212, 0.2);
    transform: translateY(-2px);
}

.board-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(6, 182, 212, 0.2);
}

.board-icon-container {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(34, 211, 238, 0.15));
    border: 2px solid rgba(6, 182, 212, 0.4);
    flex-shrink: 0;
}

.board-icon {
    font-size: 2.5rem;
    color: var(--accent-cyan);
    transition: all var(--transition-normal);
}

/* Shape-specific icon styles */
.board-icon.compact {
    color: #FFA500; /* Orange for compact/freestyle */
    filter: drop-shadow(0 0 12px rgba(255, 165, 0, 0.6));
}

.board-icon.midlength {
    color: var(--accent-cyan); /* Cyan for mid-length freeride */
    filter: drop-shadow(0 0 12px rgba(6, 182, 212, 0.6));
}

.board-icon.dwbullet {
    color: #00FF88; /* Green for DW Bullet race */
    filter: drop-shadow(0 0 12px rgba(0, 255, 136, 0.6));
}

.board-shape-info {
    flex: 1;
}

.board-shape-label {
    font-size: 0.875rem;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.board-shape-name {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-cyan);
    text-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
}

.board-specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.board-spec-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(15, 41, 66, 0.5);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(6, 182, 212, 0.2);
    transition: all var(--transition-normal);
}

.board-spec-item:hover {
    border-color: rgba(6, 182, 212, 0.4);
    transform: translateY(-2px);
}

.spec-label {
    font-size: 0.875rem;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.spec-value {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.5rem;
}

.board-big-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent-cyan);
    line-height: 1;
}

.board-unit {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-400);
}

.spec-value-secondary {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin-top: 0.5rem;
}

.board-explanation {
    background: rgba(6, 182, 212, 0.1);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.board-description {
    font-size: 1rem;
    color: var(--gray-200);
    line-height: 1.7;
    margin-bottom: 1rem;
    font-weight: 500;
}

.board-experience-note {
    font-size: 0.9rem;
    color: var(--accent-cyan);
    font-weight: 600;
    font-style: italic;
}

/* Foil Explanation */
.foil-explanation {
    background: rgba(26, 58, 92, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin-bottom: 2rem;
}

.foil-explanation h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--white);
}

.foil-explanation h3 i {
    color: var(--result-primary);
}

.foil-explanation p {
    color: var(--gray-200);
    line-height: 1.8;
}

.explanation-section {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(251, 146, 60, 0.1);
}

.explanation-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.explanation-section strong {
    color: var(--result-primary);
}

/* Recommendations */
.recommendations {
    background: rgba(26, 58, 92, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin-bottom: 2rem;
}

.recommendations h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.recommendations h3 i {
    color: var(--result-primary);
}

.recommendation-grid {
    display: grid;
    gap: 1rem;
}

.recommendation-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: rgba(15, 41, 66, 0.5);
    border-radius: var(--radius-md);
    border: 1px solid rgba(251, 146, 60, 0.15);
}

.recommendation-item strong {
    color: var(--gray-300);
    font-weight: 600;
}

.recommendation-item span {
    color: var(--result-primary);
    font-weight: 600;
}

/* Chart Container */
.chart-container {
    background: rgba(26, 58, 92, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-xl);
    padding: 2rem;
}

.chart-container h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.chart-container h3 i {
    color: var(--result-primary);
}

#performance-chart {
    max-width: 100%;
    height: auto !important;
}

/* ===== Footer ===== */
.footer {
    position: relative;
    padding: 2rem 0;
    text-align: center;
    background: rgba(15, 41, 66, 0.6);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(59, 130, 246, 0.2);
    margin-top: 3rem;
    z-index: 10;
}

.footer p {
    color: var(--gray-400);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.footer i {
    color: var(--accent-cyan);
    margin-right: 0.5rem;
}

.disclaimer {
    font-size: 0.8rem !important;
    color: var(--gray-500) !important;
}

.shortcuts-info {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(59, 130, 246, 0.1);
    font-size: 0.8rem !important;
    color: var(--gray-500) !important;
}

/* ===== Modal Styles ===== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 22, 40, 0.9);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.modal-content {
    background: linear-gradient(135deg, var(--ocean-deep), var(--ocean-medium));
    border: 2px solid rgba(59, 130, 246, 0.3);
    border-radius: var(--radius-2xl);
    padding: 0;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
}

.modal-header h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin: 0;
}

.modal-header i {
    color: var(--accent-cyan);
}

.modal-close {
    background: none;
    border: none;
    color: var(--gray-400);
    font-size: 2rem;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    border-radius: var(--radius-md);
}

.modal-close:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
    transform: rotate(90deg);
}

.modal-body {
    padding: 2rem 1.5rem;
}

.modal-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--gray-300);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.modal-info i {
    color: var(--info);
}

.modal-wind-info {
    text-align: center;
    padding: 1rem;
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
}

.modal-wind-info strong {
    color: var(--accent-cyan);
    font-size: 1.25rem;
}

.modal-suggestion {
    background: rgba(26, 58, 92, 0.6);
    border: 2px solid var(--accent-cyan);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.suggested-wing {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.suggested-label {
    color: var(--gray-300);
    font-weight: 600;
}

.suggested-value {
    color: var(--white);
    font-size: 2rem;
    font-weight: 800;
}

.suggested-range {
    text-align: center;
    color: var(--gray-400);
    font-size: 0.9rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
}

.modal-actions button {
    flex: 1;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-secondary {
    background: rgba(100, 116, 139, 0.2);
    border: 1px solid var(--gray-500);
    color: var(--gray-300);
}

.btn-secondary:hover {
    background: rgba(100, 116, 139, 0.3);
    border-color: var(--gray-400);
}

.btn-primary {
    background: linear-gradient(135deg, var(--ocean-bright), var(--accent-cyan));
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(34, 211, 238, 0.4);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .controls-section {
        position: static;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .branding-line {
        font-size: 0.65rem;
        letter-spacing: 0.1em;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .subtitle {
        font-size: 0.95rem;
    }
    
    .dashboard {
        padding: 2rem 0;
    }
    
    .section-title {
        font-size: 1.25rem;
    }
    
    .control-card {
        padding: 1.25rem;
    }
    
    .result-card {
        padding: 1.25rem;
        flex-direction: column;
        align-items: flex-start;
    }
    
    .result-icon {
        width: 50px;
        height: 50px;
    }
    
    .big-number {
        font-size: 2rem;
    }
    
    .chart-container {
        padding: 1.5rem 1rem;
    }
    
    .chart-container canvas {
        width: 100% !important;
        height: auto !important;
    }
    
    /* Fix radar chart labels on mobile */
    #performance-chart {
        max-height: 300px;
    }
    
    /* Board responsive */
    .board-header {
        flex-direction: column;
        text-align: center;
    }
    
    .board-specs {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .board-big-number {
        font-size: 2.5rem;
    }
    
    .board-shape-name {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 1.5rem 0;
    }
    
    .branding-line {
        font-size: 0.6rem;
        letter-spacing: 0.08em;
    }
    
    .logo {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .logo h1 {
        font-size: 1.25rem;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    /* Further reduce chart labels on very small screens */
    #performance-chart {
        max-height: 250px;
    }
    
    .chart-container h3 {
        font-size: 1.1rem;
    }
}

/* ===== Animations ===== */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--ocean-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--ocean-bright);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-cyan);
}