/* ==========================================================================
   WEB SERIAL TERMINAL - STYLESHEET
   Supports custom themes: Matrix Green, Cyberpunk, Amber, Dark, Light
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties & Themes
   -------------------------------------------------------------------------- */
:root {
    /* Fonts */
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Courier New', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --terminal-font-size: 14px;

    /* Transition Speeds */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;

    /* Base Layout Sizing */
    --border-radius: 6px;
    --border-radius-lg: 10px;
    --header-height: 56px;
    --footer-height: 36px;
}

/* Theme 1: Matrix Green (Default Hacker Theme) */
body.theme-matrix {
    --bg-app: #050806;
    --bg-panel: #0a0f0c;
    --bg-terminal: #000502;
    --bg-input: #0e1712;
    --bg-hover: #14241a;
    --bg-active: #1a3324;
    
    --border-color: #1a3a28;
    --border-highlight: #00ff66;

    --text-primary: #00ff66;
    --text-secondary: #00b347;
    --text-muted: #00702c;
    --text-inverse: #050806;

    --color-incoming: #00ff66;
    --color-outgoing: #00e5ff;
    --color-status: #ffcc00;
    --color-error: #ff3366;
    --color-system: #b873ff;

    --glow-primary: 0 0 10px rgba(0, 255, 102, 0.35);
    --glow-text: 0 0 5px rgba(0, 255, 102, 0.5);
    --led-rx-color: #00ff66;
    --led-tx-color: #00e5ff;
}

/* Theme 2: Cyberpunk Cyan */
body.theme-cyberpunk {
    --bg-app: #080914;
    --bg-panel: #0f1124;
    --bg-terminal: #05060e;
    --bg-input: #161833;
    --bg-hover: #222650;
    --bg-active: #2f346e;

    --border-color: #2b3068;
    --border-highlight: #00f3ff;

    --text-primary: #00f3ff;
    --text-secondary: #00a8e8;
    --text-muted: #535b99;
    --text-inverse: #080914;

    --color-incoming: #00f3ff;
    --color-outgoing: #ff0055;
    --color-status: #ffe600;
    --color-error: #ff2a6d;
    --color-system: #9d4edd;

    --glow-primary: 0 0 12px rgba(0, 243, 255, 0.4);
    --glow-text: 0 0 6px rgba(0, 243, 255, 0.6);
    --led-rx-color: #00f3ff;
    --led-tx-color: #ff0055;
}

/* Theme 3: Classic Amber Terminal */
body.theme-amber {
    --bg-app: #0c0800;
    --bg-panel: #171000;
    --bg-terminal: #060400;
    --bg-input: #241900;
    --bg-hover: #362500;
    --bg-active: #4a3300;

    --border-color: #4a3300;
    --border-highlight: #ffb000;

    --text-primary: #ffb000;
    --text-secondary: #cc8d00;
    --text-muted: #805800;
    --text-inverse: #0c0800;

    --color-incoming: #ffb000;
    --color-outgoing: #00e5ff;
    --color-status: #fff066;
    --color-error: #ff3333;
    --color-system: #ff7700;

    --glow-primary: 0 0 10px rgba(255, 176, 0, 0.35);
    --glow-text: 0 0 5px rgba(255, 176, 0, 0.5);
    --led-rx-color: #ffb000;
    --led-tx-color: #00e5ff;
}

/* Theme 4: Dark Minimal */
body.theme-dark {
    --bg-app: #121316;
    --bg-panel: #1a1c23;
    --bg-terminal: #15161d;
    --bg-input: #222530;
    --bg-hover: #2d3140;
    --bg-active: #3a3f52;

    --border-color: #2d3140;
    --border-highlight: #4d94ff;

    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --text-inverse: #121316;

    --color-incoming: #7ee787;
    --color-outgoing: #79c0ff;
    --color-status: #e3b341;
    --color-error: #ff7b72;
    --color-system: #d2a8ff;

    --glow-primary: 0 0 10px rgba(77, 148, 255, 0.25);
    --glow-text: none;
    --led-rx-color: #7ee787;
    --led-tx-color: #79c0ff;
}

/* Theme 5: Light Mode */
body.theme-light {
    --bg-app: #f4f6f8;
    --bg-panel: #ffffff;
    --bg-terminal: #f8fafc;
    --bg-input: #edf2f7;
    --bg-hover: #e2e8f0;
    --bg-active: #cbd5e1;

    --border-color: #cbd5e1;
    --border-highlight: #0284c7;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-inverse: #ffffff;

    --color-incoming: #15803d;
    --color-outgoing: #0284c7;
    --color-status: #b45309;
    --color-error: #dc2626;
    --color-system: #6b21a8;

    --glow-primary: 0 2px 8px rgba(0, 0, 0, 0.08);
    --glow-text: none;
    --led-rx-color: #16a34a;
    --led-tx-color: #0284c7;
}

/* --------------------------------------------------------------------------
   Global Reset & Layout
   -------------------------------------------------------------------------- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: var(--font-sans);
    background-color: var(--bg-app);
    color: var(--text-primary);
    line-height: 1.4;
    -webkit-font-smoothing: antialiased;
}

.app-container {
    display: flex;
    flex-direction: column;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    position: relative;
}

/* --------------------------------------------------------------------------
   Banner Alert
   -------------------------------------------------------------------------- */
.banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background-color: #ffebe9;
    color: #cf222e;
    border-bottom: 1px solid #ff8182;
    font-size: 0.875rem;
    z-index: 100;
}

body.theme-matrix .banner,
body.theme-cyberpunk .banner,
body.theme-amber .banner,
body.theme-dark .banner {
    background-color: #3c1618;
    color: #ff9b9b;
    border-bottom-color: #7a2729;
}

.banner-content {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    height: var(--header-height);
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

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

.brand-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--border-radius);
    background-color: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.brand-text h1 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.5px;
    font-family: var(--font-mono);
}

.version-tag {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* Status Indicator */
.status-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 5px 12px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.85rem;
    font-family: var(--font-mono);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.status-dot.disconnected {
    background-color: var(--text-muted);
}

.status-dot.connecting {
    background-color: var(--color-status);
    animation: statusPulse 0.8s infinite;
}

.status-dot.connected {
    background-color: var(--color-incoming);
    box-shadow: 0 0 8px var(--color-incoming);
    animation: statusPulse 2.5s infinite;
}

.status-dot.error {
    background-color: var(--color-error);
    box-shadow: 0 0 8px var(--color-error);
}

@keyframes statusPulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.15); opacity: 0.85; }
    100% { transform: scale(1); opacity: 1; }
}

.activity-indicators {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: 6px;
    padding-left: 8px;
    border-left: 1px solid var(--border-color);
}

.led {
    font-size: 0.78rem;
    font-weight: 700;
    font-family: var(--font-mono);
    padding: 3px 8px;
    border-radius: 4px;
    background-color: var(--bg-panel);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    transition: all 0.08s ease;
    user-select: none;
}

.led-rx.active {
    background-color: var(--led-rx-color);
    color: #000;
    box-shadow: 0 0 14px var(--led-rx-color);
    border-color: var(--led-rx-color);
    transform: scale(1.1);
}

.led-tx.active {
    background-color: var(--led-tx-color);
    color: #000;
    box-shadow: 0 0 14px var(--led-tx-color);
    border-color: var(--led-tx-color);
    transform: scale(1.1);
}

/* --------------------------------------------------------------------------
   Toolbar
   -------------------------------------------------------------------------- */
.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 16px;
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    flex-shrink: 0;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.control-unit {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.separator {
    width: 1px;
    height: 24px;
    background-color: var(--border-color);
    margin: 0 4px;
}

/* --------------------------------------------------------------------------
   Inputs & Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 7px 14px;
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--font-sans);
    border-radius: var(--border-radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    user-select: none;
}

.btn-primary {
    background-color: var(--color-incoming);
    color: var(--text-inverse);
    border-color: var(--color-incoming);
}

.btn-primary:hover {
    filter: brightness(1.15);
    box-shadow: var(--glow-primary);
}

.btn-danger {
    background-color: var(--color-error);
    color: #ffffff;
    border-color: var(--color-error);
}

.btn-danger:hover {
    filter: brightness(1.15);
    box-shadow: 0 0 10px rgba(255, 51, 102, 0.4);
}

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

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

.btn-sm {
    padding: 4px 10px;
    font-size: 0.78rem;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--border-radius);
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

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

.btn-toggle {
    background-color: var(--bg-input);
    color: var(--text-muted);
    border-color: var(--border-color);
    font-size: 0.78rem;
    font-family: var(--font-mono);
}

.btn-toggle.active {
    background-color: var(--bg-active);
    color: var(--color-incoming);
    border-color: var(--color-incoming);
}

.select-input, .text-input {
    background-color: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 6px 10px;
    font-size: 0.83rem;
    font-family: var(--font-mono);
    outline: none;
    transition: border-color var(--transition-fast);
}

.select-input:focus, .text-input:focus {
    border-color: var(--border-highlight);
    box-shadow: var(--glow-primary);
}

.custom-baud {
    width: 110px;
}

/* --------------------------------------------------------------------------
   Advanced Settings Drawer
   -------------------------------------------------------------------------- */
.settings-drawer {
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    padding: 14px 16px;
    box-shadow: inset 0 -4px 12px rgba(0,0,0,0.3);
    animation: slideDown 0.2s ease-out;
    flex-shrink: 0;
}

.drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    font-family: var(--font-mono);
}

.drawer-header h3 {
    font-size: 0.95rem;
    color: var(--text-primary);
}

.drawer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.signal-controls {
    grid-column: span 2;
}

.btn-group {
    display: flex;
    gap: 8px;
}

/* --------------------------------------------------------------------------
   Action Bar (Filter, Toggles & Buttons)
   -------------------------------------------------------------------------- */
.action-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 6px 16px;
    background-color: var(--bg-app);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    flex-shrink: 0;
}

.action-left, .action-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    accent-color: var(--border-highlight);
    width: 14px;
    height: 14px;
    cursor: pointer;
}

.search-box {
    display: flex;
    align-items: center;
    position: relative;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 3px 8px;
    gap: 6px;
    min-width: 220px;
}

.search-box input {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 0.8rem;
    font-family: var(--font-mono);
    outline: none;
    width: 100%;
    flex: 1;
}

.search-kbd {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    background-color: var(--bg-panel);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    padding: 1px 5px;
    user-select: none;
}

.search-count {
    font-size: 0.72rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Main Terminal Display Window
   -------------------------------------------------------------------------- */
.terminal-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 150px;
    background-color: var(--bg-terminal);
    position: relative;
    overflow: hidden;
}

.terminal-screen {
    flex: 1;
    overflow-y: auto;
    overflow-x: auto;
    padding: 14px 16px;
    font-family: var(--font-mono);
    font-size: var(--terminal-font-size, 0.9rem);
    color: var(--text-primary);
    white-space: pre-wrap;
    word-break: break-word;
    tab-size: 4;
    outline: none;
    scroll-behavior: auto;
}

.terminal-welcome {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    min-height: 220px;
}

.welcome-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 28px 36px;
    max-width: 520px;
    box-shadow: var(--glow-primary);
}

.welcome-icon {
    color: var(--border-highlight);
    margin-bottom: 12px;
}

.welcome-title {
    font-size: 1.25rem;
    font-family: var(--font-mono);
    color: var(--text-primary);
    margin-bottom: 8px;
}

.welcome-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.5;
}

.btn-lg {
    padding: 10px 22px;
    font-size: 0.95rem;
}

.welcome-shortcuts {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 18px;
    flex-wrap: wrap;
    justify-content: center;
}

.shortcut-chip {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.shortcut-chip kbd {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    padding: 1px 5px;
    border-radius: 3px;
    color: var(--text-secondary);
}

/* Log Types Colors */
.log-rx {
    color: var(--color-incoming);
}

.log-tx {
    color: var(--color-outgoing);
    font-weight: 500;
}

.log-status {
    color: var(--color-status);
    font-style: italic;
}

.log-error {
    color: var(--color-error);
    font-weight: 600;
    border-left: 3px solid var(--color-error);
    padding-left: 4px;
}

.log-system {
    color: #7a9e87;
    font-style: italic;
    opacity: 0.85;
}

body.theme-cyberpunk .log-system {
    color: #8b8fb3;
}

body.theme-amber .log-system {
    color: #b3996b;
}

body.theme-dark .log-system {
    color: #8b949e;
}

body.theme-light .log-system {
    color: #64748b;
}

/* Highlighted Search Term */
mark.highlight {
    background-color: var(--border-highlight);
    color: var(--text-inverse);
    padding: 0 2px;
    border-radius: 2px;
}

/* --------------------------------------------------------------------------
   Macros Bar
   -------------------------------------------------------------------------- */
.macro-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background-color: var(--bg-panel);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
    overflow-x: auto;
}

.macro-label {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    flex-shrink: 0;
}

.macro-buttons {
    display: flex;
    gap: 6px;
    overflow-x: auto;
}

.btn-macro {
    background-color: var(--bg-input);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 3px 8px;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   Bottom Input Section
   -------------------------------------------------------------------------- */
.input-section {
    padding: 10px 16px;
    background-color: var(--bg-panel);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

.input-container {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 4px 8px 4px 14px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-container:focus-within {
    border-color: var(--border-highlight);
    box-shadow: var(--glow-primary);
}

.input-prompt {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: bold;
    color: var(--color-outgoing);
    user-select: none;
}

.terminal-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    padding: 6px 0;
}

.input-mode-select,
.line-ending-select {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-panel);
    padding: 4px 6px;
    font-size: 0.78rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.input-mode-select:hover,
.line-ending-select:hover {
    color: var(--text-primary);
    border-color: var(--border-highlight);
}

.btn-send {
    padding: 6px 14px;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.app-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--footer-height);
    padding: 0 16px;
    background-color: var(--bg-panel);
    border-top: 1px solid var(--border-color);
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    flex-shrink: 0;
}

.footer-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.footer-value {
    color: var(--text-primary);
    font-weight: 500;
}

.footer-right {
    display: flex;
    align-items: center;
    gap: 14px;
}

.btn-text {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    text-decoration: underline;
}

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

.keyboard-hint kbd {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    padding: 1px 4px;
    font-size: 0.68rem;
    color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   Toast Notifications
   -------------------------------------------------------------------------- */
.toast-container {
    position: fixed;
    bottom: 48px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 1000;
    pointer-events: none;
}

.toast {
    background-color: var(--bg-panel);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--border-highlight);
    border-radius: var(--border-radius);
    padding: 10px 14px;
    font-size: 0.85rem;
    font-family: var(--font-mono);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
    animation: toastIn 0.2s ease-out;
    pointer-events: auto;
    max-width: 320px;
}

.toast.toast-error {
    border-left-color: var(--color-error);
}

.toast.toast-success {
    border-left-color: var(--color-incoming);
}

.toast.toast-info {
    border-left-color: var(--color-outgoing);
}

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

@keyframes pulse {
    0% { opacity: 0.4; }
    50% { opacity: 1; }
    100% { opacity: 0.4; }
}

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

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-terminal);
}

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

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

/* --------------------------------------------------------------------------
   Responsive Layout Adjustment
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
    .app-header {
        padding: 0 10px;
    }
    .brand-text h1 {
        font-size: 1rem;
    }
    .version-tag {
        display: none;
    }
    .toolbar {
        padding: 6px 10px;
    }
    .keyboard-hint {
        display: none;
    }
    .drawer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .toolbar-group {
        width: 100%;
        justify-content: space-between;
    }
    .drawer-grid {
        grid-template-columns: 1fr;
    }
    .action-bar {
        flex-direction: column;
        align-items: flex-start;
    }
    .action-right {
        width: 100%;
        justify-content: space-between;
    }
    .search-box input {
        width: 90px;
    }
}

/* --------------------------------------------------------------------------
   Multi-Device Connection Tabs Bar
   -------------------------------------------------------------------------- */
.device-tabs-bar {
    display: flex;
    align-items: center;
    background-color: var(--bg-app);
    border-bottom: 1px solid var(--border-color);
    padding: 4px 8px 0 8px;
    gap: 4px;
    overflow-x: auto;
    flex-shrink: 0;
}

.tabs-container {
    display: flex;
    align-items: center;
    gap: 4px;
}

.device-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background-color: var(--bg-panel);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-top-left-radius: var(--border-radius);
    border-top-right-radius: var(--border-radius);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    cursor: pointer;
    user-select: none;
    transition: all var(--transition-fast);
}

.device-tab.active {
    background-color: var(--bg-terminal);
    color: var(--text-primary);
    border-color: var(--border-highlight);
    font-weight: 500;
}

.device-tab .tab-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-muted);
}

.device-tab.connected .tab-status-dot {
    background-color: var(--color-incoming);
    box-shadow: 0 0 6px var(--color-incoming);
}

.device-tab .tab-close {
    font-size: 1rem;
    line-height: 1;
    color: var(--text-muted);
    padding: 0 2px;
    border-radius: 3px;
}

.device-tab .tab-close:hover {
    color: var(--color-error);
    background-color: rgba(255,51,102,0.2);
}

.btn-add-tab {
    font-size: 0.75rem;
    padding: 4px 10px;
    color: var(--text-secondary);
    border: 1px dashed var(--border-color);
    border-radius: var(--border-radius);
    margin-left: 4px;
}

.btn-add-tab:hover {
    border-color: var(--border-highlight);
    color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   Live Telemetry Serial Plotter Canvas
   -------------------------------------------------------------------------- */
.plotter-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-terminal);
    position: relative;
    padding: 10px;
    overflow: hidden;
}

.plotter-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.plotter-title {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
    font-weight: 500;
}

.plotter-stats {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.plotter-canvas {
    flex: 1;
    width: 100%;
    height: 100%;
    margin-top: 8px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: rgba(0, 0, 0, 0.4);
}

.plotter-legend {
    display: flex;
    align-items: center;
    gap: 16px;
    padding-top: 8px;
    flex-wrap: wrap;
    font-family: var(--font-mono);
    font-size: 0.78rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.legend-color-box {
    width: 12px;
    height: 12px;
    border-radius: 2px;
}

/* --------------------------------------------------------------------------
   Highlighting Rules Styling
   -------------------------------------------------------------------------- */
.rule-error {
    background-color: rgba(255, 51, 102, 0.18);
    color: #ff4d79 !important;
}

.rule-warn {
    background-color: rgba(255, 204, 0, 0.18);
    color: #ffd633 !important;
}

.rule-success {
    background-color: rgba(0, 255, 102, 0.18);
    color: #33ff88 !important;
}

.rule-info {
    background-color: rgba(0, 229, 255, 0.18);
    color: #33ebff !important;
}

.rule-purple {
    background-color: rgba(184, 115, 255, 0.18);
    color: #c78eff !important;
}

/* --------------------------------------------------------------------------
   Export Menu & Modals
   -------------------------------------------------------------------------- */
.export-dropdown-container {
    position: relative;
}

.export-menu {
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 4px;
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    display: flex;
    flex-direction: column;
    z-index: 120;
    min-width: 190px;
    overflow: hidden;
}

.export-option {
    background: none;
    border: none;
    color: var(--text-primary);
    padding: 8px 14px;
    text-align: left;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.export-option:hover {
    background-color: var(--bg-hover);
}

.export-option.text-danger {
    color: var(--color-error);
    border-top: 1px solid var(--border-color);
}

/* Modal Overlay & Card */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-card {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 520px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: slideDown 0.2s ease-out;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
    font-family: var(--font-mono);
}

.modal-header h3 {
    font-size: 0.95rem;
    color: var(--text-primary);
}

.modal-body {
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    max-height: 70vh;
    overflow-y: auto;
}

.modal-hint {
    color: var(--text-muted);
    font-size: 0.78rem;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    padding: 12px 18px;
    background-color: var(--bg-app);
    border-top: 1px solid var(--border-color);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.8rem;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.file-progress-container {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 6px;
}

.progress-bar-track {
    width: 100%;
    height: 12px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background-color: var(--border-highlight);
    transition: width 0.1s ease;
}

.file-progress-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: center;
}

.rules-list, .macros-edit-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 200px;
    overflow-y: auto;
}

.rule-item-row, .macro-item-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 10px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.8rem;
}

.add-rule-form, .add-macro-form {
    display: flex;
    gap: 8px;
    margin-top: 6px;
}

.add-rule-form input, .add-macro-form input {
    flex: 1;
}

/* --------------------------------------------------------------------------
   Floating Jump to Bottom Button
   -------------------------------------------------------------------------- */
.btn-jump-bottom {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background-color: var(--bg-panel);
    color: var(--border-highlight);
    border: 1px solid var(--border-highlight);
    border-radius: 20px;
    font-size: 0.78rem;
    font-family: var(--font-mono);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4), var(--glow-primary);
    cursor: pointer;
    z-index: 50;
    transition: all var(--transition-fast);
    animation: slideUpFade 0.2s ease-out;
}

.btn-jump-bottom:hover {
    background-color: var(--bg-active);
    filter: brightness(1.15);
}

@keyframes slideUpFade {
    from { opacity: 0; transform: translate(-50%, 10px); }
    to { opacity: 1; transform: translate(-50%, 0); }
}

/* --------------------------------------------------------------------------
   ANSI Terminal SGR Colors & Formatting
   -------------------------------------------------------------------------- */
.ansi-bold { font-weight: 700; }
.ansi-dim { opacity: 0.65; }
.ansi-italic { font-style: italic; }
.ansi-underline { text-decoration: underline; }

.ansi-black { color: #4e5666; }
.ansi-red { color: #ff5555; }
.ansi-green { color: #50fa7b; }
.ansi-yellow { color: #f1fa8c; }
.ansi-blue { color: #bd93f9; }
.ansi-magenta { color: #ff79c6; }
.ansi-cyan { color: #8be9fd; }
.ansi-white { color: #f8f8f2; }

.ansi-bright-black { color: #6272a4; }
.ansi-bright-red { color: #ff6e6e; }
.ansi-bright-green { color: #69ff94; }
.ansi-bright-yellow { color: #ffffa5; }
.ansi-bright-blue { color: #d6acff; }
.ansi-bright-magenta { color: #ff92df; }
.ansi-bright-cyan { color: #a4ffff; }
.ansi-bright-white { color: #ffffff; }

.ansi-bg-black { background-color: #21222c; padding: 0 2px; border-radius: 2px; }
.ansi-bg-red { background-color: rgba(255, 85, 85, 0.3); padding: 0 2px; border-radius: 2px; }
.ansi-bg-green { background-color: rgba(80, 250, 123, 0.3); padding: 0 2px; border-radius: 2px; }
.ansi-bg-yellow { background-color: rgba(241, 250, 140, 0.3); padding: 0 2px; border-radius: 2px; }
.ansi-bg-blue { background-color: rgba(189, 147, 249, 0.3); padding: 0 2px; border-radius: 2px; }
.ansi-bg-magenta { background-color: rgba(255, 121, 198, 0.3); padding: 0 2px; border-radius: 2px; }
.ansi-bg-cyan { background-color: rgba(139, 233, 253, 0.3); padding: 0 2px; border-radius: 2px; }
.ansi-bg-white { background-color: rgba(248, 248, 242, 0.3); padding: 0 2px; border-radius: 2px; }

/* --------------------------------------------------------------------------
   Canonical Hex Dump Styling
   -------------------------------------------------------------------------- */
.hex-offset {
    color: var(--text-muted);
    user-select: none;
    margin-right: 8px;
}
.hex-bytes {
    color: var(--color-outgoing);
    margin-right: 12px;
}
.hex-ascii {
    color: var(--text-secondary);
    border-left: 1px solid var(--border-color);
    padding-left: 8px;
}

/* --------------------------------------------------------------------------
   Split-Screen Dual View Layout (Terminal + Plotter)
   -------------------------------------------------------------------------- */
.terminal-container.split-mode {
    display: grid !important;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr;
    gap: 8px;
    padding: 8px;
}

.terminal-container.split-mode #terminal-screen {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    height: 100%;
}

.terminal-container.split-mode #plotter-container {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    height: 100%;
    display: flex !important;
}

@media (max-width: 850px) {
    .terminal-container.split-mode {
        grid-template-columns: 1fr !important;
        grid-template-rows: 1fr 1fr !important;
    }
}

/* --------------------------------------------------------------------------
   Telemetry Plotter Tooltip Cursor Inspection
   -------------------------------------------------------------------------- */
.plotter-tooltip {
    position: absolute;
    background-color: var(--bg-panel);
    color: var(--text-primary);
    border: 1px solid var(--border-highlight);
    border-radius: var(--border-radius);
    padding: 6px 10px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    pointer-events: none;
    z-index: 100;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.6);
    white-space: nowrap;
    backdrop-filter: blur(4px);
    transition: opacity 0.1s ease;
}

/* --------------------------------------------------------------------------
   Periodic TX Pulsing Active Indicator
   -------------------------------------------------------------------------- */
.btn.periodic-tx-active {
    background-color: rgba(255, 204, 0, 0.18) !important;
    border-color: var(--color-status) !important;
    color: var(--color-status) !important;
    box-shadow: 0 0 10px rgba(255, 204, 0, 0.35);
}