/* CSS Variables for theming - Claude AI inspired */
:root {
    /* Light theme colors */
    --bg-primary: #f7f7f8;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f5f5f5;
    --text-primary: #2d2d2d;
    --text-secondary: #5f5f5f;
    --text-tertiary: #8e8e8e;
    --accent-primary: #c96c2a;
    --accent-hover: #a85824;
    --accent-soft: #e8d5c4;
    --border-light: #e5e5e5;
    --border-medium: #d1d1d1;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --status-success: #16a34a;
    --status-error: #dc2626;
    --status-warning: #ea580c;
    --status-info: #2563eb;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

body.dark-theme {
    /* Dark theme colors - inspired by Claude AI */
    --bg-primary: #1a1a1a;
    --bg-secondary: #242424;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ececec;
    --text-secondary: #b4b4b4;
    --text-tertiary: #737373;
    --accent-primary: #d97943;
    --accent-hover: #e89563;
    --accent-soft: #3d2f27;
    --border-light: #2f2f2f;
    --border-medium: #404040;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --status-success: #22c55e;
    --status-error: #ef4444;
    --status-warning: #f97316;
    --status-info: #3b82f6;
}

/* Subtle glassmorphism in dark theme */
body.dark-theme .container {
    background: rgba(36, 36, 36, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

body.dark-theme .notification {
    background: rgba(36, 36, 36, 0.9);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), color 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.container {
    max-width: 800px;
    margin: 40px auto;
    padding: 40px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    width: 90%;
    position: relative;
    border: 1px solid var(--border-light);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateZ(0);
}

@media (min-width: 1024px) {
    .container {
        max-width: 900px;
        padding: 48px;
    }
}

h1 {
    font-size: 2.25rem;
    font-weight: 600;
    margin-bottom: 40px;
    text-align: center;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

@media (min-width: 1024px) {
    h1 {
        font-size: 2.5rem;
        margin-bottom: 48px;
    }
}

.notice-banner {
    background-color: var(--accent-soft);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin-bottom: 24px;
    text-align: center;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

#recordButton {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-full);
    background: var(--accent-primary);
    border: none;
    cursor: pointer;
    margin: 20px auto;
    display: inline-block;
    color: white;
    font-size: 1rem;
    font-weight: 500;
    box-shadow: var(--shadow-md);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    vertical-align: middle;
    position: relative;
    overflow: hidden;
}

#recordButton::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

#recordButton:active::before {
    width: 120px;
    height: 120px;
}

.replay-icon-button {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    background: var(--accent-primary);
    border: none;
    cursor: pointer;
    color: white;
    box-shadow: var(--shadow-sm);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 0;
    vertical-align: middle;
    padding: 0;
}

.replay-icon-button svg {
    width: 20px;
    height: 20px;
}

.replay-icon-button:hover:not(:disabled) {
    transform: translateY(-2px);
    background: var(--accent-hover);
    box-shadow: var(--shadow-md);
}

.replay-icon-button:disabled {
    background: var(--border-medium);
    cursor: not-allowed;
    opacity: 0.5;
}

.replay-icon-button:disabled:hover {
    transform: none;
    background: var(--border-medium);
    box-shadow: var(--shadow-sm);
}

#recordButton:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    background: var(--accent-hover);
}

#recordButton.recording {
    background: var(--status-error);
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.transcript-container,
.enhanced-transcript-container {
    position: relative;
    margin-top: 32px;
}

.transcript-container:first-of-type {
    margin-top: 40px;
}

@media (min-width: 768px) {
    .transcript-container,
    .enhanced-transcript-container {
        margin-top: 40px;
    }

    .transcript-container:first-of-type {
        margin-top: 48px;
    }
}

textarea {
    width: 100%;
    min-height: 160px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 18px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.9375rem;
    line-height: 1.7;
    resize: vertical;
    box-sizing: border-box;
    font-family: inherit;
    transition: all 0.2s ease;
}

textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: var(--bg-secondary);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

textarea::placeholder {
    color: var(--text-tertiary);
    opacity: 0.7;
}

textarea:empty::before {
    content: attr(placeholder);
    color: var(--text-tertiary);
    opacity: 0.7;
}

@media (min-width: 768px) {
    textarea {
        min-height: 180px;
        padding: 20px;
        font-size: 1rem;
    }
}

.copy-button {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 8px 14px;
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    z-index: 1;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.copy-button:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.copy-button:active {
    transform: translateY(0);
}

.button-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    padding: 28px 0;
    flex-wrap: wrap;
}

@media (min-width: 768px) {
    .button-container {
        gap: 16px;
        padding: 32px 0;
    }
}

.action-button {
    flex: 0 1 120px;
    max-width: 150px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--accent-primary);
    border: none;
    cursor: pointer;
    color: white;
    font-size: 0.9375rem;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.action-button:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.action-button:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.action-button:disabled {
    background: var(--border-medium);
    cursor: not-allowed;
    opacity: 0.5;
    color: var(--text-tertiary);
}

.action-button:disabled:hover {
    background: var(--border-medium);
    transform: none;
    box-shadow: var(--shadow-sm);
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: var(--shadow-md);
    }

    50% {
        transform: scale(1.05);
        box-shadow: 0 0 0 8px rgba(239, 68, 68, 0.2), var(--shadow-lg);
    }
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        margin: 16px auto;
        padding: 24px;
        width: 95%;
    }

    h1 {
        font-size: 1.875rem;
        margin-bottom: 24px;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .container {
        margin: 8px auto;
        padding: 20px 16px;
        border-radius: var(--radius-md);
        width: 96%;
    }

    h1 {
        font-size: 1.5rem;
        margin-bottom: 24px;
        letter-spacing: -0.01em;
    }

    #timer {
        font-size: 1.125rem;
        margin-bottom: 16px;
    }

    .model-selector {
        flex-direction: column;
        gap: 8px;
        margin-bottom: 20px;
    }

    .model-selector label {
        font-size: 0.875rem;
    }

    .model-selector select {
        width: 100%;
        max-width: 280px;
    }

    .controls-wrapper {
        gap: 12px;
        margin-bottom: 20px;
    }

    #recordButton {
        width: 72px;
        height: 72px;
        font-size: 0.875rem;
    }

    .replay-icon-button {
        width: 40px;
        height: 40px;
        margin-left: 0;
    }

    .replay-icon-button svg {
        width: 18px;
        height: 18px;
    }

    textarea {
        padding: 12px;
        font-size: 0.875rem;
        min-height: 140px;
    }

    .button-container {
        gap: 8px;
        padding: 20px 0;
    }

    .action-button {
        flex: 1 1 auto;
        min-width: 120px;
        max-width: 160px;
        height: 42px;
        font-size: 0.8125rem;
        padding: 0 12px;
    }

    .action-button svg {
        width: 14px;
        height: 14px;
        margin-right: 4px;
    }

    .copy-button {
        padding: 6px 10px;
        font-size: 0.75rem;
        top: 12px;
        right: 12px;
    }

    .theme-toggle,
    .connection-status {
        top: 16px;
    }

    .theme-toggle {
        left: 16px;
        width: 32px;
        height: 32px;
        font-size: 1rem;
        padding: 6px;
    }

    .connection-status {
        right: 16px;
        width: 8px;
        height: 8px;
    }

    .section-label {
        font-size: 0.75rem;
        margin-bottom: 8px;
    }

    .transcript-container,
    .enhanced-transcript-container {
        margin-top: 24px;
    }

    .transcript-container:first-of-type {
        margin-top: 32px;
    }
}

/* Print styles */
@media print {
    body {
        background: white;
        color: black;
    }

    .container {
        box-shadow: none;
        border: 1px solid #ccc;
        max-width: 100%;
        margin: 0;
    }

    .theme-toggle,
    .connection-status,
    .copy-button,
    .button-container,
    .keyboard-hint,
    .model-selector,
    .controls-wrapper,
    #timer {
        display: none !important;
    }

    textarea {
        border: 1px solid #ccc;
        background: white;
        color: black;
    }

    .section-label {
        color: #666;
    }

    h1 {
        color: black;
    }
}

.connection-status {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    background: var(--status-error);
    transition: all 0.3s ease;
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4);
    z-index: 10;
}

@media (min-width: 768px) {
    .connection-status {
        top: 24px;
        right: 24px;
    }
}

.connection-status::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border-radius: var(--radius-full);
    border: 2px solid currentColor;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.connection-status.connected {
    background: var(--status-success);
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4);
}

.connection-status.connected::before {
    opacity: 0.2;
    border-color: var(--status-success);
}

.connection-status.connecting {
    animation: blink 1.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Consistent border radius for all interactive elements */
button,
select,
textarea {
    border-radius: var(--radius-md);
}

#recordButton,
.replay-icon-button,
.theme-toggle,
.connection-status {
    border-radius: var(--radius-full);
}

.copy-button {
    border-radius: var(--radius-sm);
}

/* Ensure smooth color transitions for all elements */
* {
    transition-property: background-color, border-color, color, fill, stroke;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 200ms;
}

/* Override for elements with specific transitions */
*[style*="transition"],
.container,
.notification,
body {
    /* Keep their own transitions */
}

/* Dark theme specific overrides are handled via CSS variables */

@keyframes blink {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.4;
        transform: scale(0.95);
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.theme-toggle {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    font-size: 1.125rem;
    cursor: pointer;
    padding: 6px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
    z-index: 10;
}

.theme-toggle:hover {
    transform: translateY(-2px);
    background: var(--accent-soft);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
}

.theme-toggle:active {
    transform: translateY(0);
}

@media (min-width: 768px) {
    .theme-toggle {
        top: 24px;
        left: 24px;
        width: 40px;
        height: 40px;
        padding: 8px;
        font-size: 1.25rem;
    }
}

/* Select dropdown styling */
select {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    padding: 10px 36px 10px 14px;
    font-size: 0.9375rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238e8e8e' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    min-width: 200px;
}

select:hover {
    border-color: var(--accent-primary);
    background-color: var(--bg-secondary);
}

select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 8px;
}

/* Label styling */
label {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
}

/* Timer styling */
#timer {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.05em;
    font-variant-numeric: tabular-nums;
}

@media (min-width: 768px) {
    #timer {
        font-size: 1.75rem;
    }
}

/* Status and layout helpers */
.status-stack {
    text-align: center;
    margin: 12px 0 20px 0;
}

.status-label {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.timer-label {
    font-size: 1.25rem;
    letter-spacing: 0.05em;
    font-variant-numeric: tabular-nums;
}

.controls-stack {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.primary-control {
    display: flex;
    justify-content: center;
}

.secondary-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.replay-button {
    min-width: 160px;
}

.storage-hint {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    transition: color 0.2s ease;
}

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

/* Focus visible for accessibility */
*:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Loading animation - skeleton screen */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.skeleton {
    animation: shimmer 2s infinite linear;
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 0%,
        var(--bg-secondary) 50%,
        var(--bg-tertiary) 100%
    );
    background-size: 1000px 100%;
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
}

.skeleton::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    animation: shimmerOverlay 2s infinite;
}

@keyframes shimmerOverlay {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Fade in animation for containers */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.container {
    animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: var(--radius-sm);
    transition: background 0.2s ease;
}

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

/* Selection styling */
::selection {
    background: var(--accent-soft);
    color: var(--text-primary);
}

/* Model selector styling */
.model-selector {
    text-align: center;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

@media (min-width: 768px) {
    .model-selector {
        margin-bottom: 32px;
    }
}

/* Controls wrapper */
.controls-wrapper {
    text-align: center;
    margin-bottom: 24px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

@media (min-width: 768px) {
    .controls-wrapper {
        margin-bottom: 32px;
        gap: 20px;
    }
}

/* Timer styling */
.timer {
    text-align: center;
    margin-bottom: 20px;
}

/* Button text wrapper */
.button-text {
    position: relative;
    z-index: 1;
}

/* Section labels */
.section-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 10px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

@media (min-width: 768px) {
    .section-label {
        font-size: 0.875rem;
        margin-bottom: 12px;
    }
}

/* SVG icons in buttons */
.action-button svg {
    flex-shrink: 0;
}

/* Enhanced button states with icons */
.action-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

/* Copy button success state */
.copy-button.copied {
    background: var(--status-success);
}

/* Recording button states */
#recordButton {
    position: relative;
    z-index: 1;
}

#recordButton .button-text {
    transition: transform 0.2s ease;
}

#recordButton:active .button-text {
    transform: scale(0.95);
}

/* Improved focus states for better accessibility */
button:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 3px;
    box-shadow: 0 0 0 4px var(--accent-soft);
}

select:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

textarea:focus-visible {
    outline: none;
}

/* Loading state for buttons */
.action-button.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.action-button.loading svg,
.action-button.loading .button-text {
    opacity: 0;
}

.action-button.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.7s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

/* Recording animation improvements */
#recordButton.recording {
    animation: recordingPulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes recordingPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7), var(--shadow-md);
    }

    50% {
        transform: scale(1.05);
        box-shadow: 0 0 0 12px rgba(239, 68, 68, 0), var(--shadow-lg);
    }
}

/* Tooltip styling - custom implementation */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    padding: 6px 10px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-md);
    z-index: 100;
}

[data-tooltip]::after {
    content: '';
    position: absolute;
    bottom: calc(100% + 2px);
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: var(--border-light);
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-tooltip]:hover::before,
[data-tooltip]:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Tooltip styling */
[title] {
    position: relative;
}

/* Connection status tooltip */
.connection-status::after {
    content: attr(data-status);
    position: absolute;
    bottom: -35px;
    right: -10px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
}

.connection-status:hover::after {
    opacity: 1;
}

/* Notification system */
.notification {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(-100px) scale(0.9);
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 14px 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    font-size: 0.9375rem;
    font-weight: 500;
    z-index: 1000;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    max-width: 90%;
    text-align: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.notification.show {
    transform: translateX(-50%) translateY(0) scale(1);
    opacity: 1;
}

.notification-success {
    border-color: var(--status-success);
    background: var(--status-success);
    color: white;
}

.notification-error {
    border-color: var(--status-error);
    background: var(--status-error);
    color: white;
}

.notification-warning {
    border-color: var(--status-warning);
    background: var(--status-warning);
    color: white;
}

.notification-info {
    border-color: var(--status-info);
    background: var(--status-info);
    color: white;
}

/* Add subtle entrance animation for textareas */
textarea {
    animation: fadeInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Pulse animation for active elements */
@keyframes subtlePulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

/* Performance optimizations */
#recordButton,
.replay-icon-button,
.action-button,
.copy-button,
.theme-toggle {
    will-change: transform;
    backface-visibility: hidden;
    -webkit-font-smoothing: antialiased;
}

.connection-status {
    will-change: background-color;
}

/* GPU acceleration for animations */
@keyframes fadeIn,
@keyframes fadeInUp,
@keyframes pulse,
@keyframes recordingPulse,
@keyframes blink,
@keyframes spin,
@keyframes shimmer {
    transform: translateZ(0);
}

/* Improve replay button spin animation */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Add ripple effect container */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.ripple:active::after {
    width: 200px;
    height: 200px;
}

/* Keyboard hint */
.keyboard-hint {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    margin-top: -24px;
    margin-bottom: 24px;
    opacity: 0.8;
}

kbd {
    display: inline-block;
    padding: 2px 8px;
    font-size: 0.75rem;
    font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Monaco, Consolas, monospace;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-medium);
    border-radius: 4px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
    font-weight: 600;
}

@media (max-width: 480px) {
    .keyboard-hint {
        font-size: 0.75rem;
        margin-top: -20px;
        margin-bottom: 20px;
    }

    kbd {
        font-size: 0.6875rem;
        padding: 2px 6px;
    }
}