/* FreeAcoustics.tools - Base Styles
   Dark theme for studio/audio professionals */

:root {
    /* Dark theme (default) */
    --bg-main: #0f0f0f;
    --bg-card: #1a1a1a;
    --bg-input: #252525;
    --bg-line: #1f1f1f;
    --bg-dark: #0a0a0a;
    --border: #333333;
    --border-focus: #6366f1;
    --text-primary: #f5f5f5;
    --text-secondary: #a3a3a3;
    --text-muted: #666666;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --accent-light: rgba(99, 102, 241, 0.15);
    --success: #22c55e;
    --warning: #eab308;
    --danger: #ef4444;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
}

/* Light theme */
body.light-theme {
    --bg-main: #f8f9fa;
    --bg-card: #ffffff;
    --bg-input: #f1f3f4;
    --bg-line: #e9ecef;
    --bg-dark: #e9ecef;
    --border: #dee2e6;
    --border-focus: #6366f1;
    --text-primary: #1a1a1a;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --accent-light: rgba(99, 102, 241, 0.12);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 1.5rem;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: white;
    box-shadow: var(--shadow-md);
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.tagline {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Navigation Bar */
.nav-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
    box-shadow: var(--shadow-sm);
}

.nav-bar a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.35rem 0.65rem;
    border-radius: var(--radius-sm);
    transition: all 0.15s;
}

.nav-bar a:hover {
    color: var(--text-primary);
    background: var(--bg-input);
}

.nav-bar a.nav-active {
    color: var(--accent);
    font-weight: 600;
    background: var(--accent-light);
}

.nav-divider {
    color: var(--border);
}

/* Theme Toggle */
.theme-toggle {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.35rem 0.5rem;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    transition: all 0.15s;
    margin-left: 0.5rem;
}

.theme-toggle:hover {
    border-color: var(--accent);
    background: var(--accent-light);
}

/* Buttons */
.btn {
    padding: 0.65rem 1.35rem;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-light);
}

.btn-sm {
    padding: 0.4rem 0.85rem;
    font-size: 0.85rem;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
}

/* Footer */
footer {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

footer strong {
    color: var(--text-secondary);
}

footer a {
    color: var(--text-secondary);
    text-decoration: none;
}

footer a:hover {
    color: var(--accent);
}

/* Support Box */
.support-box {
    max-width: 500px;
    margin: 2rem auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.support-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.support-links a,
.support-link-btn {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    padding: 0;
}

.support-links a:hover,
.support-link-btn:hover {
    color: var(--accent);
}

.support-divider {
    color: var(--text-muted);
}

/* Tip Box */
.tip-box {
    background: var(--accent-light);
    border-left: 3px solid var(--accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 0.85rem 1.15rem;
    margin: 1rem 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

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

/* Network Badge */
.network-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

.network-badge a {
    color: var(--text-secondary);
    text-decoration: none;
}

.network-badge a:hover {
    color: var(--accent);
}

/* Help Icons */
.help-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 14px;
    height: 14px;
    font-size: 10px;
    font-weight: 600;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-muted);
    cursor: help;
    margin-left: 4px;
    vertical-align: middle;
}

.help-icon:hover {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
}

.help-text {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
    line-height: 1.3;
}

/* Print Styles */
@media print {
    * {
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }

    body {
        background: white !important;
        color: #1a1a1a !important;
        font-size: 11pt;
    }

    .container {
        max-width: 100%;
        padding: 0;
    }

    /* Hide interactive/non-essential elements */
    .nav-bar,
    .support-box,
    .consultation-cta,
    .theme-toggle,
    .save-load-row,
    .add-surface-btn,
    .remove-btn,
    .unit-toggle,
    .mode-tabs,
    .tab-row,
    .tip-box,
    .formula-reference,
    .formula-ref,
    .formula-box,
    footer,
    .btn,
    .btn-primary,
    .btn-secondary,
    .preset-btn,
    .room-type-btn,
    .freq-tab,
    input[type="file"],
    input[type="range"] {
        display: none !important;
    }

    /* Show slider values as text for print */
    .slider-value {
        display: inline !important;
        font-weight: bold !important;
    }

    /* Keep data grids visible */
    .tl-grid,
    .ispl-grid,
    .octave-inputs,
    .surface-list,
    .mode-table,
    .stats-grid,
    .code-grid {
        display: grid !important;
    }

    /* Remove scroll constraints for print - show all content */
    .mode-table-container,
    .surface-list,
    .preset-list,
    .demountable-scroll {
        max-height: none !important;
        overflow: visible !important;
        height: auto !important;
    }

    .mode-table {
        display: table !important;
    }

    .mode-table th,
    .mode-table td {
        border: 1px solid #ccc !important;
        padding: 0.4rem 0.6rem !important;
    }

    .mode-table th {
        background: #f0f0f0 !important;
        position: static !important;
    }

    /* Ensure active mode content is visible */
    .mode-content,
    .tab-content {
        display: block !important;
    }

    /* Hide non-active mode content */
    .mode-content[style*="display: none"],
    .tab-content[style*="display: none"] {
        display: none !important;
    }

    /* Keep input values visible but non-editable appearance */
    input, select {
        border: none !important;
        background: transparent !important;
        padding: 0 !important;
        font-weight: 600;
    }

    /* Style cards for print */
    .input-section,
    .results-section,
    .card {
        background: white !important;
        border: 1px solid #ccc !important;
        box-shadow: none !important;
        page-break-inside: avoid;
        margin-bottom: 0.5rem;
    }

    /* Results display - ensure values are visible */
    .rt60-value, .stc-value, .iic-value, .pi-value, .nc-rating, .nc-value,
    .schroeder-value, .stat-value, .deficiency-value {
        color: #1a1a1a !important;
        font-size: inherit !important;
    }

    /* Ensure result displays are visible */
    .stc-display, .iic-display, .pi-display, .nc-display, .rt60-display {
        background: #f5f5f5 !important;
        border: 1px solid #ccc !important;
        padding: 1rem !important;
    }

    /* Keep perception/recommendation boxes */
    .perception-box, .rec-list, .rec-item, .warning-item, .recommendation {
        background: #f9f9f9 !important;
        border: 1px solid #ddd !important;
        margin-bottom: 0.5rem !important;
    }

    /* TL/ISPL data grids for print */
    .tl-input, .ispl-input, .octave-input {
        background: #f5f5f5 !important;
        border: 1px solid #ccc !important;
        padding: 0.5rem !important;
        text-align: center;
    }

    .tl-input label, .ispl-input label, .octave-input label {
        color: #666 !important;
        font-size: 0.8rem !important;
    }

    /* Section titles */
    .section-title {
        color: #333 !important;
        border-bottom: 1px solid #ccc;
        padding-bottom: 0.25rem;
        margin-bottom: 0.5rem;
    }

    /* Header styling for print */
    header {
        border-bottom: 2px solid #333;
        padding-bottom: 0.5rem;
        margin-bottom: 1rem;
    }

    header .logo-icon {
        display: none;
    }

    header h1 {
        color: #1a1a1a !important;
        font-size: 18pt;
    }

    header .tagline {
        color: #666 !important;
    }

    /* Intro box */
    .intro-box {
        background: #f5f5f5 !important;
        border: 1px solid #ddd !important;
    }

    /* Charts - ensure they print */
    canvas {
        max-width: 100%;
    }

    .chart-container,
    .rt60-chart-container,
    .ispl-chart,
    .tl-chart {
        background: white !important;
        border: 1px solid #ccc !important;
    }

    /* Add print header with date */
    .container::before {
        content: "FreeAcoustics.tools Report • " attr(data-print-date);
        display: block;
        font-size: 9pt;
        color: #666;
        text-align: right;
        margin-bottom: 0.5rem;
    }

    /* Footer branding */
    .container::after {
        content: "Generated by FreeAcoustics.tools — Professional acoustics calculators";
        display: block;
        font-size: 8pt;
        color: #999;
        text-align: center;
        margin-top: 2rem;
        padding-top: 0.5rem;
        border-top: 1px solid #ddd;
    }

    /* Grid layouts for print */
    .calculator-layout,
    .calculator-grid {
        display: block !important;
    }

    .input-column,
    .results-column,
    .results-panel {
        width: 100% !important;
        margin-bottom: 1rem;
    }
}