/* Stylesheet for KeyPulse - Premium Keyboard Tester */

/* CSS Variables for design system */
:root {
    --transition-fast: 0.1s ease;
    --transition-normal: 0.2s ease;
    --transition-slow: 0.3s ease;
    
    --font-primary: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --key-radius: 6px;
    --card-radius: 12px;
}

/* Theme 1: Neon Dark (Default) */
.theme-neon-dark {
    --bg-app: radial-gradient(circle at 50% 50%, #0d0f1e 0%, #06070c 100%);
    --bg-card: rgba(18, 22, 41, 0.65);
    --border-card: rgba(255, 255, 255, 0.08);
    --text-primary: #f1f3f9;
    --text-secondary: #8e95af;
    --text-muted: #575e7a;
    
    /* Accents */
    --accent: #00f0ff;
    --accent-glow: rgba(0, 240, 255, 0.35);
    --accent-secondary: #ff007f;
    
    /* Key States */
    --key-bg: rgba(26, 32, 58, 0.7);
    --key-border: rgba(255, 255, 255, 0.1);
    --key-text: #e2e8f0;
    
    --key-pressing-bg: #00f0ff;
    --key-pressing-text: #040508;
    --key-pressing-glow: 0 0 15px #00f0ff, inset 0 2px 4px rgba(255, 255, 255, 0.6);
    
    --key-tested-bg: rgba(0, 240, 255, 0.15);
    --key-tested-border: #00f0ff;
    --key-tested-text: #00f0ff;
    
    --key-special-bg: rgba(255, 0, 127, 0.1);
    --key-special-border: rgba(255, 0, 127, 0.4);
    --key-special-text: #ff007f;
    
    --scrollbar-thumb: rgba(0, 240, 255, 0.2);
}

/* Theme 2: Cyberpunk */
.theme-cyberpunk {
    --bg-app: #121214;
    --bg-card: rgba(25, 25, 29, 0.9);
    --border-card: 2px solid #fcee0a;
    --text-primary: #00f0ff;
    --text-secondary: #fcee0a;
    --text-muted: #5e5e60;
    
    --accent: #fcee0a;
    --accent-glow: rgba(252, 238, 10, 0.3);
    --accent-secondary: #ff0055;
    
    --key-bg: #1c1c1f;
    --key-border: rgba(252, 238, 10, 0.2);
    --key-text: #fff;
    
    --key-pressing-bg: #ff0055;
    --key-pressing-text: #fff;
    --key-pressing-glow: 0 0 18px #ff0055, 0 0 5px #fcee0a;
    
    --key-tested-bg: rgba(252, 238, 10, 0.15);
    --key-tested-border: #fcee0a;
    --key-tested-text: #fcee0a;
    
    --key-special-bg: rgba(0, 240, 255, 0.1);
    --key-special-border: #00f0ff;
    --key-special-text: #00f0ff;
    
    --scrollbar-thumb: #fcee0a;
}

/* Theme 3: Slate Dark */
.theme-slate-dark {
    --bg-app: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --border-card: rgba(255, 255, 255, 0.05);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #475569;
    
    --accent: #38bdf8;
    --accent-glow: rgba(56, 189, 248, 0.3);
    --accent-secondary: #818cf8;
    
    --key-bg: #1e293b;
    --key-border: rgba(255, 255, 255, 0.08);
    --key-text: #e2e8f0;
    
    --key-pressing-bg: #38bdf8;
    --key-pressing-text: #0f172a;
    --key-pressing-glow: 0 4px 12px rgba(56, 189, 248, 0.4);
    
    --key-tested-bg: rgba(16, 185, 129, 0.15);
    --key-tested-border: #10b981;
    --key-tested-text: #34d399;
    
    --key-special-bg: rgba(99, 102, 241, 0.15);
    --key-special-border: rgba(99, 102, 241, 0.5);
    --key-special-text: #a5b4fc;
    
    --scrollbar-thumb: #475569;
}

/* Theme 4: Glass Light */
.theme-glass-light {
    --bg-app: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --bg-card: rgba(255, 255, 255, 0.45);
    --border-card: rgba(255, 255, 255, 0.4);
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --accent: #4f46e5;
    --accent-glow: rgba(79, 70, 229, 0.25);
    --accent-secondary: #06b6d4;
    
    --key-bg: rgba(255, 255, 255, 0.7);
    --key-border: rgba(0, 0, 0, 0.06);
    --key-text: #334155;
    
    --key-pressing-bg: #4f46e5;
    --key-pressing-text: #ffffff;
    --key-pressing-glow: 0 8px 16px rgba(79, 70, 229, 0.35);
    
    --key-tested-bg: rgba(16, 185, 129, 0.1);
    --key-tested-border: #059669;
    --key-tested-text: #065f46;
    
    --key-special-bg: rgba(6, 182, 212, 0.1);
    --key-special-border: rgba(6, 182, 212, 0.4);
    --key-special-text: #0891b2;
    
    --scrollbar-thumb: rgba(0, 0, 0, 0.15);
}

/* Global Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    outline: none;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-app);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 24px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    overflow-y: auto;
    transition: background var(--transition-slow);
}

.app-container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Header Styling */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    padding: 16px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--card-radius);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.brand-wrapper {
    display: flex;
    align-items: center;
    gap: 24px;
}

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

.header-nav {
    display: flex;
    gap: 16px;
    border-left: 1px solid var(--border-card);
    padding-left: 20px;
}

.header-link {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: color var(--transition-normal);
}

.header-link:hover {
    color: var(--accent);
    text-shadow: 0 0 8px var(--accent-glow);
}

.logo-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--accent);
    filter: drop-shadow(0 0 6px var(--accent-glow));
    animation: pulse-glow 3s infinite ease-in-out;
}

.logo-text h1 {
    font-size: 22px;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.5px;
    background: linear-gradient(90deg, var(--text-primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-text span {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-secondary);
}

/* Real-Time Stats */
.stats-panel {
    display: flex;
    gap: 16px;
}

.stat-box {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.02);
    border-left: 3px solid var(--accent);
    border-radius: 4px;
    min-width: 110px;
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-value .unit {
    font-size: 12px;
    color: var(--text-secondary);
    margin-left: 2px;
}

.stat-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* Controls Dashboard */
.controls-dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    padding: 20px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--card-radius);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    align-items: flex-end;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.control-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.select-wrapper {
    position: relative;
    width: 100%;
}

.select-wrapper::after {
    content: '';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid var(--text-secondary);
    pointer-events: none;
}

select {
    width: 100%;
    padding: 10px 16px;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--key-border);
    border-radius: 6px;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    transition: border-color var(--transition-normal);
}

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

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 12px;
}

.btn-primary, .btn-secondary, .btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 600;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: var(--accent);
    color: #000;
}

.btn-primary:hover {
    background: #fff;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-card);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.btn-danger:hover {
    background: #ef4444;
    color: #fff;
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.2);
}

/* Workspace Layout */
.main-workspace {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 20px;
}

/* Left panel with keyboard */
.workspace-left {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.keyboard-viewport {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--card-radius);
    padding: 24px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    overflow-x: auto;
    display: flex;
    justify-content: center;
}

/* Keyboard Key Rendering Container */
.keyboard-grid {
    display: flex;
    flex-direction: column;
    gap: 6px;
    user-select: none;
    min-width: 820px;
    max-width: 1060px;
}

/* Layout spec widths */
.keyboard-row {
    display: flex;
    gap: 6px;
    width: 100%;
}

/* Virtual Key Styling */
.key {
    background: var(--key-bg);
    border: 1px solid var(--key-border);
    border-bottom: 3px solid rgba(0,0,0,0.3);
    border-radius: var(--key-radius);
    color: var(--key-text);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 7px 9px;
    font-size: 12px;
    font-weight: 600;
    height: 48px;
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast), color var(--transition-fast);
    flex-grow: 0;
    flex-shrink: 0;
    position: relative;
}

/* Key label styling */
.key .label-top {
    font-size: 9px;
    color: var(--text-secondary);
    line-height: 1;
    align-self: flex-start;
}

.key .label-main {
    align-self: flex-end;
    font-size: 13px;
    line-height: 1.1;
    font-family: var(--font-primary);
}

/* Special single label center configuration */
.key.key-center {
    justify-content: center;
    align-items: center;
}

.key.key-center .label-main {
    align-self: center;
    font-size: 11px;
}

/* Key Pressing State */
.key.pressing {
    background: var(--key-pressing-bg) !important;
    border-color: var(--key-pressing-bg) !important;
    color: var(--key-pressing-text) !important;
    box-shadow: var(--key-pressing-glow) !important;
    transform: translateY(2px);
    border-bottom-width: 1px !important;
}

.key.pressing .label-top {
    color: inherit;
    opacity: 0.6;
}

/* Key Tested (History Pressed) State */
.key.tested {
    background: var(--key-tested-bg);
    border-color: var(--key-tested-border);
    color: var(--key-tested-text);
    box-shadow: 0 0 8px rgba(0, 240, 255, 0.08);
}

.key.tested .label-top {
    color: var(--key-tested-text);
    opacity: 0.7;
}

/* Key Special Class (e.g. Fn, Win) */
.key.special {
    background: var(--key-special-bg);
    border-color: var(--key-special-border);
    color: var(--key-special-text);
}

/* Key spacing spacers */
.key-spacer {
    display: block;
    flex-grow: 0;
    flex-shrink: 0;
    height: 48px;
}

/* Keyboard Legend */
.keyboard-legend {
    display: flex;
    justify-content: center;
    gap: 20px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 6px;
    border: 1px solid var(--border-card);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
    display: inline-block;
}

.color-untested { background: rgba(26, 32, 58, 0.7); border: 1px solid rgba(255, 255, 255, 0.1); }
.color-pressing { background: #00f0ff; }
.color-tested { background: rgba(0, 240, 255, 0.15); border: 1px solid #00f0ff; }
.color-special { background: rgba(255, 0, 127, 0.1); border: 1px solid rgba(255, 0, 127, 0.4); }

/* Right Panel: Side Info Cards */
.workspace-right {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--card-radius);
    padding: 20px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.info-card h3 {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-card);
    padding-bottom: 8px;
}

/* Mouse Tester Graphics */
.mouse-tester-content {
    display: flex;
    align-items: center;
    gap: 24px;
}

.mouse-svg-container {
    color: var(--text-muted);
}

#mouse-graphic {
    transition: color var(--transition-normal);
}

.mouse-part {
    transition: fill var(--transition-fast), color var(--transition-fast);
}

/* Mouse click highlights */
.mouse-part.active {
    fill: var(--accent-glow) !important;
    color: var(--accent) !important;
}

.scroll-arrow.active {
    opacity: 1 !important;
    color: var(--accent) !important;
    filter: drop-shadow(0 0 4px var(--accent-glow));
}

.mouse-stats {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-grow: 1;
}

.mouse-stat-row {
    display: flex;
    flex-direction: column;
}

.mouse-stat-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
}

.mouse-stat-val {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Key Event Details Grid */
.event-details-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.event-property {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.02);
}

.property-name {
    font-size: 12px;
    color: var(--text-secondary);
}

.property-value {
    font-size: 13px;
    font-weight: 700;
    color: var(--accent);
}

/* Diagnostic Event History Log */
.history-section {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--card-radius);
    padding: 24px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.history-header h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.history-actions {
    display: flex;
    gap: 12px;
}

.history-table-wrapper {
    max-height: 250px;
    overflow-y: auto;
    border: 1px solid var(--border-card);
    border-radius: 6px;
    background: rgba(0,0,0,0.15);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    text-align: left;
}

th, td {
    padding: 10px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.03);
}

th {
    background: rgba(0,0,0,0.2);
    font-weight: 600;
    color: var(--text-secondary);
    position: sticky;
    top: 0;
    z-index: 10;
}

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

tr:hover td {
    background: rgba(255,255,255,0.01);
}

.empty-row-placeholder td {
    text-align: center;
    color: var(--text-muted);
    padding: 24px;
    font-style: italic;
}

/* Utility Font classes */
.font-mono {
    font-family: var(--font-mono);
}

/* Footer style */
.app-footer {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: 24px 16px;
    font-size: 12px;
    color: var(--text-muted);
    border-top: 1px solid var(--border-card);
    margin-top: 10px;
    width: 100%;
}

.footer-links {
    display: flex;
    gap: 20px;
    margin-bottom: 4px;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-normal);
}

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

.footer-brand-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-normal);
}

.footer-brand-link:hover {
    text-decoration: underline;
    filter: drop-shadow(0 0 4px var(--accent-glow));
}

/* Modal Overlay Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    z-index: 9999;
    transition: opacity var(--transition-slow);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* Modal Card */
.modal-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--card-radius);
    width: 90%;
    max-width: 600px;
    padding: 32px;
    position: relative;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    transform: translateY(-20px);
    transition: transform var(--transition-slow);
    max-height: 85vh;
    overflow-y: auto;
}

.modal-overlay.active .modal-card {
    transform: translateY(0);
}

/* Close Button */
.modal-close-btn {
    position: absolute;
    top: 16px;
    right: 20px;
    background: transparent;
    border: none;
    font-size: 28px;
    font-weight: 300;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
    transition: color var(--transition-normal);
}

.modal-close-btn:hover {
    color: var(--accent-secondary);
}

/* Modal Content Styles */
.modal-body h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--accent);
    border-bottom: 1px solid var(--border-card);
    padding-bottom: 8px;
}

.modal-body h3 {
    font-size: 16px;
    font-weight: 600;
    margin-top: 20px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.modal-body p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.modal-body ul {
    margin-left: 20px;
    margin-bottom: 16px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
}

.modal-body a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
}

.modal-body a:hover {
    text-decoration: underline;
}

.modal-body .brand-heading {
    text-align: center;
    margin-bottom: 24px;
}

.modal-body .brand-heading h2 {
    border-bottom: none;
    margin-bottom: 4px;
}

.modal-body .brand-heading span {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 3px;
}

/* Keypress pulse animations */
@keyframes pulse-glow {
    0%, 100% {
        filter: drop-shadow(0 0 4px var(--accent-glow));
    }
    50% {
        filter: drop-shadow(0 0 10px var(--accent));
    }
}

/* Responsive adjustment */
@media (max-width: 1200px) {
    .main-workspace {
        grid-template-columns: 1fr;
    }
    
    .workspace-right {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
}

@media (max-width: 768px) {
    body {
        padding: 12px;
    }
    
    .workspace-right {
        grid-template-columns: 1fr;
    }
    
    .app-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .stats-panel {
        width: 100%;
        overflow-x: auto;
        padding-bottom: 4px;
    }
}