:root {
    --color-background-primary: #1a1a2e;
    --color-background-secondary: #16213e;
    --color-background-tertiary: #0f3460;
    --color-border: #0a2e59;
    --color-text-primary: #e0e0e0;
    --color-accent: #ff6b6b;
    --color-hover: #1a4980;
    --color-hover-dark: #2a5990;
    --color-disabled: #4a4e69;
    --color-disabled-hover: #5a5e79;
    --color-shadow-dark: rgba(0, 0, 0, 0.1);
    --color-shadow-light: rgba(0, 0, 0, 0.08);
    --color-glow-primary: rgba(255, 107, 107, 0.4);
    --color-glow-secondary: rgba(255, 107, 107, 0.6);
    --color-glow-tertiary: rgba(200, 67, 67, 0.8);
}

*,
*:before,
*:after {
  box-sizing: border-box;
}

html, body {
    margin: 0;
    min-height: 100vh;
    background-color: var(--color-background-primary);
}

body {
    background: repeating-linear-gradient(125deg, 
        var(--color-background-secondary) 10px, 
        var(--color-background-primary) 15px);
    color: var(--color-text-primary);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
}

ol {
  padding-inline-start: 1em;
}

a,
a:visited {
    color: var(--color-text-primary);
}

.app-container {
    background-color: var(--color-background-secondary);
    box-shadow: 0 4px 6px var(--color-shadow-dark), 
                0 1px 3px var(--color-shadow-light);
    padding: calc(1.3em + (1.5 - 1.3) * ((100vw - 21em)/(35 - 21)));
    width: 100%;
    max-width: 800px;
}

h1 {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 1rem;
    text-align: center;
    text-shadow: 0 1em 1em black;
    user-select: none;
    -webkit-user-select: none;
}

.title-container {
  display: grid;
  grid-template-columns: 2fr auto;
  align-items: center;
}

.timer-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 1.5rem;
}

.timer-button {
    user-select: none;
    -webkit-user-select: none;
    background-color: transparent;
    color: var(--color-text-primary);
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform 0.1s ease-out, background-color 0.3s ease;
}

.timer-button:not(:disabled):hover {
    transform: scale(1.5);
    text-shadow: 0 1px currentColor, -1px -1px var(--color-glow-primary);
    box-shadow:
        inset -2px -2px 4px rgba(0, 0, 0, 0.5),
        inset 2px 2px 4px rgba(255, 255, 255, 0.3),
        -2px -2px 6px rgba(0, 0, 0, 0.3),
        2px 2px 6px rgba(255, 255, 255, 0.1);
}

.timer-button:not(:disabled):active {
    transform: scale(0.95);
    box-shadow:
        inset 3px 3px 6px rgba(0, 0, 0, 0.8),
        inset -1px -1px 3px rgba(255, 255, 255, 0.2);
}

.timer-button:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

#timer {
    font-size: 3rem;
    font-weight: bold;
    color: var(--color-accent);
    text-shadow: 0 0 3px rgba(25, 10, 10, 0.7),
                 0 0 28px var(--color-glow-primary),
                 0 0 38px var(--color-glow-primary),
                 0 0 14px var(--color-glow-secondary),
                 0 0 20px var(--color-glow-tertiary);
    text-align: center;
    margin: 0 1rem;
    user-select: none;
    -webkit-user-select: none;
}

#notepad {
    background-color: var(--color-background-tertiary);
    color: var(--color-text-primary);
    border: 2px solid var(--color-border);
    border-radius: 0;
    padding: 1rem;
    width: 100%;
    height: 300px;
    resize: vertical;
    min-height: 200px;
    max-height: 80vh;
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 1rem;
    box-sizing: border-box;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

#notepad:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 10px var(--color-glow-primary),
                0 0 20px var(--color-glow-primary),
                0 0 30px var(--color-glow-secondary);
    outline: none;
}

#notepad::-webkit-resizer {
    background-color: var(--color-background-secondary);
}

#notepad {
    scrollbar-color: var(--color-background-secondary) var(--color-background-tertiary);
    resize-corner: resize-corner;
}

#status {
    color: var(--color-disabled);
    font-weight: bold;
    text-align: center;
    margin-bottom: 1rem;
    min-height: 1.5em;
}

#savedNotes {
    margin-top: 1.5rem;
}

#savedNotes h2 {
    font-size: 1rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.saved-note {
    background-color: var(--color-background-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 0.25rem;
    padding: 0.5rem;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.saved-note-content {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    margin: 0.5rem 0;
    line-height: 1.5;
    max-height: 3em;
}

.saved-note:hover {
    border-color: var(--color-hover);
    box-shadow: 0 0 3px 2px inset var(--color-hover);
}


.start-again-button {
  font-size: 2em;
  margin-left: auto;
}

.note-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
}

.note-action-button {
    background-color: var(--color-hover);
    color: var(--color-text-primary);
    border: none;
    border-radius: 0.25rem;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    transition: background-color 0.1s ease;
    box-shadow:
        inset -1px -1px 1px rgba(0, 0, 0, 0.5),
        inset 1px 1px 1px rgba(255, 255, 255, 0.3),
        -1px -1px 3px rgba(0, 0, 0, 0.2),
        1px 1px 3px rgba(255, 255, 255, 0.1);
    user-select: none;
    -webkit-user-select: none;
}

.note-action-button:hover {
    background-color: var(--color-hover-dark);
        box-shadow:
        inset -1px -1px 2px rgba(0, 0, 0, 0.6),
        inset 1px 1px 2px rgba(255, 255, 255, 0.4),
        -2px -2px 4px rgba(0, 0, 0, 0.2),
        2px 2px 4px rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.note-action-button:active {
    background-color: var(--color-hover-dark);
    box-shadow: 
        inset 2px 2px 4px rgba(0, 0, 0, 0.8),
        inset -1px -1px 2px rgba(255, 255, 255, 0.2);
    transform: translateY(1px);
}

::-webkit-scrollbar {
    width: 15px;
}

::-webkit-scrollbar-track {
    background: var(--color-background-tertiary);
    border-radius: 0.5rem;
}

::-webkit-scrollbar-thumb {
    background-color: var(--color-disabled);
    border-radius: 6px;
    border: 3px solid var(--color-background-tertiary);
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-disabled-hover);
}

details {
    transition: background 0.2s ease;
    padding: 1em;
    border-radius: 6px;
}

details[open] {
    background: var(--color-background-tertiary);
}

details div {
    margin-top: 1em;
}

summary {
    margin-left: -2rem;
    font-weight: bold;
}

.toggle-about {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1000;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--color-text-primary);
    transition: all 0.1s ease;
    -webkit-tap-highlight-color: transparent;
}

.toggle-about:hover {
    transform: scale(1.1);
}

.toggle-about:active {
    transform: scale(0.9);
}

.about-section {
    position: fixed;
    top: 0;
    right: -100%;
    max-width: 100vw;
    width: 400px;
    height: 100vh;
    background: var(--color-background-secondary);
    border-left: 1px solid var(--color-border);
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.3);
    padding: 2rem;
    overflow-y: auto;
    transition: right 0.3s ease;
    z-index: 999;
}

.about-section.visible {
    right: 0;
}

.about-section h2 {
    margin-top: 0;
    padding-top: 1rem;
    color: var(--color-accent);
    text-shadow: 0 0 10px var(--color-glow-primary);
}

.about-section h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--color-text-primary);
}

.about-section ul {
    padding-left: 1.2rem;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
}

.about-section li {
    margin-bottom: 0.5rem;
}

.about-section p {
    color: var(--color-text-primary);
}

.about-section .note {
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--color-background-tertiary);
    border-left: 4px solid var(--color-accent);
    box-shadow: -3px 0 5px var(--color-glow-primary),
    -6px 0 10px var(--color-glow-secondary),
    0 0 2px var(--color-background-primary);
}

/* Custom scrollbar for the about section */
.about-section::-webkit-scrollbar {
    width: 15px;
}

.about-section::-webkit-scrollbar-track {
    background: var(--color-background-tertiary);
}

.about-section::-webkit-scrollbar-thumb {
    background-color: var(--color-disabled);
    border-radius: 6px;
    border: 3px solid var(--color-background-tertiary);
}

.about-section::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-disabled-hover);
}

.theme-toggle-wrap {
    position: fixed;
    top: 1rem;
    right: 3.5rem;
    z-index: 1000;
}

.toggle-theme {
    display: block;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--color-text-primary);
    transition: transform 0.1s ease;
    -webkit-tap-highlight-color: transparent;
}

.toggle-theme:hover {
    transform: scale(1.1);
}

.toggle-theme:active {
    transform: scale(0.9);
}

.theme-menu {
    position: absolute;
    top: calc(100% + 0.25rem);
    right: 0;
    background: var(--color-background-secondary);
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 16px var(--color-shadow-dark),
                0 1px 3px var(--color-shadow-light);
    padding: 0.25rem;
    display: flex;
    flex-direction: column;
    min-width: 160px;
}

.theme-menu[hidden] {
    display: none;
}

.theme-option {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: transparent;
    border: none;
    padding: 0.5rem 0.75rem;
    color: var(--color-text-primary);
    cursor: pointer;
    text-align: left;
    font-size: 0.9rem;
    font-family: inherit;
    -webkit-appearance: none;
    appearance: none;
    transition: background-color 0.1s ease;
    -webkit-tap-highlight-color: transparent;
}

.theme-option .theme-name {
    color: inherit;
}

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

.theme-option[aria-current="true"] {
    background-color: var(--color-hover);
    font-weight: 600;
}

.theme-swatch {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 0 0 1px var(--color-border);
}

.theme-swatch[data-swatch="countdown"] {
    background: linear-gradient(135deg, #1a1a2e 50%, #ff6b6b 50%);
}

.theme-swatch[data-swatch="paper"] {
    background: linear-gradient(135deg, oklch(0.985 0.008 85) 50%, oklch(0.45 0.13 25) 50%);
}

.theme-swatch[data-swatch="oled"] {
    background: linear-gradient(135deg, #000 50%, oklch(0.78 0.18 65) 50%);
}

.theme-swatch[data-swatch="panic"] {
    background: linear-gradient(135deg, oklch(0.09 0.05 25) 50%, oklch(0.6 0.27 25) 50%);
    animation: panic-swatch-pulse 1.4s ease-in-out infinite;
}

@keyframes panic-swatch-pulse {
    0%, 100% { filter: brightness(1); }
    50% { filter: brightness(1.4); }
}

.theme-swatch[data-swatch="typewriter"] {
    background: linear-gradient(135deg, oklch(0.93 0.025 70) 50%, oklch(0.4 0.15 30) 50%);
}

.theme-swatch[data-swatch="chalkboard"] {
    background: linear-gradient(135deg, oklch(0.22 0.04 160) 50%, oklch(0.85 0.15 80) 50%);
}

.theme-swatch[data-swatch="dusk"] {
    background: linear-gradient(135deg, oklch(0.85 0.05 70) 0%, oklch(0.55 0.07 320) 50%, oklch(0.2 0.06 280) 100%);
}

.theme-swatch[data-swatch="submarine"] {
    background: linear-gradient(135deg, oklch(0.15 0.06 25) 50%, oklch(0.7 0.2 25) 50%);
}

.theme-swatch[data-swatch="receipt"] {
    background: linear-gradient(135deg, oklch(0.95 0.018 85) 50%, oklch(0.4 0.04 250) 50%);
}

:root[data-theme="paper"] {
    --color-background-primary: oklch(0.97 0.012 85);
    --color-background-secondary: oklch(0.985 0.008 85);
    --color-background-tertiary: oklch(0.995 0.004 85);
    --color-border: oklch(0.86 0.018 85);
    --color-text-primary: oklch(0.24 0.04 260);
    --color-accent: oklch(0.45 0.13 25);
    --color-hover: oklch(0.93 0.012 85);
    --color-hover-dark: oklch(0.89 0.014 85);
    --color-disabled: oklch(0.7 0.012 85);
    --color-disabled-hover: oklch(0.6 0.014 85);
    --color-shadow-dark: oklch(0.24 0.04 260 / 0.08);
    --color-shadow-light: oklch(0.24 0.04 260 / 0.04);
    --color-glow-primary: transparent;
    --color-glow-secondary: transparent;
    --color-glow-tertiary: transparent;
}

[data-theme="paper"] body {
    background: var(--color-background-primary);
}

[data-theme="paper"] h1 {
    text-shadow: none;
    font-weight: 500;
    letter-spacing: -0.01em;
}

[data-theme="paper"] #timer {
    text-shadow: none;
    font-weight: 500;
}

[data-theme="paper"] #notepad:focus {
    box-shadow: 0 0 0 3px oklch(0.45 0.13 25 / 0.15);
}

[data-theme="paper"] #notepad {
    scrollbar-color: var(--color-disabled) var(--color-background-tertiary);
}

[data-theme="paper"] .timer-button:not(:disabled):hover {
    text-shadow: none;
    box-shadow: none;
    background-color: var(--color-hover);
}

[data-theme="paper"] .timer-button:not(:disabled):active {
    box-shadow: none;
}

[data-theme="paper"] .note-action-button {
    box-shadow: none;
    border: 1px solid var(--color-border);
    background-color: var(--color-hover);
}

[data-theme="paper"] .note-action-button:hover {
    box-shadow: none;
    background-color: var(--color-hover-dark);
    transform: none;
}

[data-theme="paper"] .note-action-button:active {
    box-shadow: none;
    background-color: var(--color-hover-dark);
    transform: none;
}

[data-theme="paper"] .saved-note:hover {
    border-color: var(--color-accent);
    box-shadow: none;
}

[data-theme="paper"] details[open] {
    background: var(--color-hover);
}

[data-theme="paper"] .about-section {
    box-shadow: -2px 0 16px oklch(0.24 0.04 260 / 0.08);
}

:root[data-theme="oled"] {
    --color-background-primary: #000;
    --color-background-secondary: #000;
    --color-background-tertiary: #000;
    --color-border: oklch(0.22 0.005 240);
    --color-text-primary: oklch(0.86 0.005 240);
    --color-accent: oklch(0.78 0.18 65);
    --color-hover: oklch(0.1 0.005 240);
    --color-hover-dark: oklch(0.14 0.005 240);
    --color-disabled: oklch(0.4 0.005 240);
    --color-disabled-hover: oklch(0.5 0.005 240);
    --color-shadow-dark: transparent;
    --color-shadow-light: transparent;
    --color-glow-primary: oklch(0.78 0.18 65 / 0.4);
    --color-glow-secondary: oklch(0.78 0.18 65 / 0.2);
    --color-glow-tertiary: oklch(0.7 0.2 55 / 0.6);
}

[data-theme="oled"] body {
    background: #000;
}

[data-theme="oled"] h1 {
    text-shadow: none;
    font-weight: 500;
}

[data-theme="oled"] #timer {
    color: var(--color-accent);
    text-shadow: 0 0 28px var(--color-glow-primary),
                 0 0 38px var(--color-glow-primary),
                 0 0 14px var(--color-glow-secondary),
                 0 0 20px var(--color-glow-tertiary);
}

[data-theme="oled"] .app-container {
    border: 1px solid var(--color-border);
    box-shadow: none;
}

[data-theme="oled"] .timer-button:not(:disabled):hover {
    box-shadow: none;
    text-shadow: none;
    background-color: var(--color-hover);
}

[data-theme="oled"] .timer-button:not(:disabled):active {
    box-shadow: none;
}

[data-theme="oled"] .note-action-button {
    box-shadow: none;
    border: 1px solid var(--color-border);
    background-color: oklch(0.06 0 0);
    color: var(--color-text-primary);
}

[data-theme="oled"] .note-action-button:hover {
    box-shadow: none;
    background-color: var(--color-hover);
    transform: none;
}

[data-theme="oled"] .note-action-button:active {
    box-shadow: none;
    background-color: var(--color-hover-dark);
    transform: none;
}

[data-theme="oled"] .saved-note {
    background-color: oklch(0.04 0 0);
}

[data-theme="oled"] .saved-note:hover {
    border-color: var(--color-accent);
    box-shadow: none;
}

[data-theme="oled"] details[open] {
    background: oklch(0.06 0 0);
}

[data-theme="oled"] .about-section {
    background: #000;
    box-shadow: none;
}

:root[data-theme="panic"] {
    --color-background-primary: oklch(0.09 0.05 25);
    --color-background-secondary: oklch(0.09 0.05 25);
    --color-background-tertiary: oklch(0.13 0.08 25);
    --color-border: oklch(0.32 0.18 25);
    --color-text-primary: oklch(0.96 0.04 25);
    --color-accent: oklch(0.6 0.27 25);
    --color-hover: oklch(0.18 0.12 25);
    --color-hover-dark: oklch(0.22 0.14 25);
    --color-disabled: oklch(0.4 0.1 25);
    --color-disabled-hover: oklch(0.5 0.12 25);
    --color-shadow-dark: transparent;
    --color-shadow-light: transparent;
    --color-glow-primary: oklch(0.6 0.27 25 / 0.5);
    --color-glow-secondary: oklch(0.6 0.27 25 / 0.3);
    --color-glow-tertiary: transparent;
}

[data-theme="panic"] body {
    background: var(--color-background-primary);
    overflow: hidden;
    margin: 0;
    padding: 0;
}

[data-theme="panic"] .app-container {
    max-width: none;
    width: 100vw;
    height: 100vh;
    padding: 0;
    margin: 0;
    background: transparent;
    box-shadow: none;
    position: relative;
}

[data-theme="panic"] .title-container,
[data-theme="panic"] details,
[data-theme="panic"] #status {
    display: none;
}

[data-theme="panic"] #savedNotes {
    display: none !important;
}

[data-theme="panic"] .timer-button,
[data-theme="panic"] .start-again-button {
    display: none !important;
}

[data-theme="panic"] .timer-container {
    position: fixed;
    inset: 0;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 0;
}

[data-theme="panic"] #timer {
    font-size: 25vw;
    line-height: 0.85;
    color: oklch(0.5 0.27 25 / 0.34);
    font-weight: 900;
    text-shadow: 0 0 40px oklch(0.6 0.27 25 / 0.25);
    margin: 0;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.06em;
    white-space: nowrap;
}

[data-theme="panic"] body.timer-running #timer {
    animation: panic-pulse 1.2s ease-in-out infinite;
}

[data-theme="panic"] body.is-typing {
    animation: panic-blaring 1.6s ease-in-out infinite;
}

@keyframes panic-blaring {
    0%, 100% { background-color: oklch(0.09 0.05 25); }
    50% { background-color: oklch(0.16 0.11 25); }
}

@keyframes panic-pulse {
    0%, 100% {
        opacity: 0.55;
        transform: scale(1);
    }
    50% {
        opacity: 0.95;
        transform: scale(1.04);
    }
}

[data-theme="panic"] #notepad {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    max-height: none;
    min-height: 0;
    background: transparent;
    color: var(--color-text-primary);
    border: none;
    line-height: 1.05;
    text-align: center;
    padding: 6vh 4vw;
    z-index: 2;
    resize: none;
    font-weight: 800;
    letter-spacing: -0.02em;
    box-sizing: border-box;
    overflow: hidden;
}

[data-theme="panic"] #notepad:focus {
    outline: none;
    box-shadow: none;
    border: none;
}

[data-theme="panic"] #notepad::placeholder {
    color: oklch(0.7 0.18 25 / 0.5);
    font-weight: 600;
}

/* ==================== typewriter ==================== */

:root[data-theme="typewriter"] {
    --color-background-primary: oklch(0.91 0.028 75);
    --color-background-secondary: oklch(0.94 0.022 75);
    --color-background-tertiary: oklch(0.97 0.018 80);
    --color-border: oklch(0.65 0.05 60);
    --color-text-primary: oklch(0.2 0.025 60);
    --color-accent: oklch(0.42 0.16 28);
    --color-hover: oklch(0.88 0.025 75);
    --color-hover-dark: oklch(0.82 0.03 75);
    --color-disabled: oklch(0.55 0.03 60);
    --color-disabled-hover: oklch(0.45 0.04 60);
    --color-shadow-dark: oklch(0.2 0.025 60 / 0.18);
    --color-shadow-light: oklch(0.2 0.025 60 / 0.08);
    --color-glow-primary: transparent;
    --color-glow-secondary: transparent;
    --color-glow-tertiary: transparent;
}

[data-theme="typewriter"] body {
    background: var(--color-background-primary);
    background-image: radial-gradient(oklch(0.5 0.06 60 / 0.04) 1px, transparent 1px);
    background-size: 4px 4px;
    font-family: 'Courier Prime', 'Courier New', 'Courier', monospace;
}

[data-theme="typewriter"] .app-container {
    background: var(--color-background-secondary);
    box-shadow: 0 1px 2px var(--color-shadow-light), 0 8px 24px var(--color-shadow-dark);
}

[data-theme="typewriter"] h1 {
    text-shadow: none;
    font-weight: 700;
    font-family: 'Courier Prime', 'Courier New', monospace;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    font-size: 1.4rem;
    border-bottom: 2px solid var(--color-text-primary);
    padding-bottom: 0.3rem;
    display: inline-block;
    justify-self: start;
}

[data-theme="typewriter"] #timer {
    font-family: 'Courier Prime', 'Courier New', monospace;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-accent);
    text-shadow: none;
    width: 5.5rem;
    height: 5.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, oklch(0.97 0.015 75), oklch(0.78 0.03 75));
    box-shadow: inset 0 1px 1px oklch(1 0 0 / 0.7),
                inset 0 -2px 3px oklch(0.4 0.05 60 / 0.3),
                0 2px 6px oklch(0.3 0.04 60 / 0.25);
    border: 1px solid oklch(0.55 0.04 60);
    margin: 0 0.5rem;
}

[data-theme="typewriter"] .timer-button {
    background: radial-gradient(circle at 30% 30%, oklch(0.96 0.015 75), oklch(0.8 0.03 75));
    color: var(--color-text-primary);
    border: 1px solid oklch(0.55 0.04 60);
    box-shadow: inset 0 1px 1px oklch(1 0 0 / 0.6),
                inset 0 -1px 2px oklch(0.4 0.05 60 / 0.25),
                0 1px 3px oklch(0.3 0.04 60 / 0.2);
}

[data-theme="typewriter"] .timer-button:not(:disabled):hover {
    text-shadow: none;
    box-shadow: inset 0 1px 1px oklch(1 0 0 / 0.8),
                inset 0 -2px 3px oklch(0.4 0.05 60 / 0.3),
                0 2px 4px oklch(0.3 0.04 60 / 0.3);
    transform: translateY(-1px);
}

[data-theme="typewriter"] .timer-button:not(:disabled):active {
    box-shadow: inset 0 2px 3px oklch(0.4 0.05 60 / 0.4);
    transform: translateY(1px);
}

[data-theme="typewriter"] #notepad {
    background: var(--color-background-tertiary);
    color: var(--color-text-primary);
    font-family: 'Courier Prime', 'Courier New', monospace;
    line-height: 1.7;
    letter-spacing: 0.02em;
    border: 1px solid var(--color-border);
    text-shadow: 0.4px 0.3px 0 oklch(0.2 0.025 60 / 0.18);
}

[data-theme="typewriter"] #notepad:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px oklch(0.42 0.16 28 / 0.12);
}

[data-theme="typewriter"] .note-action-button {
    box-shadow: none;
    border: 1px solid var(--color-border);
    background-color: var(--color-hover);
    font-family: 'Courier Prime', 'Courier New', monospace;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.8rem;
}

[data-theme="typewriter"] .note-action-button:hover {
    box-shadow: none;
    background-color: var(--color-hover-dark);
    transform: none;
}

[data-theme="typewriter"] .note-action-button:active {
    background-color: var(--color-hover-dark);
    transform: translateY(1px);
}

[data-theme="typewriter"] .saved-note {
    background: var(--color-background-tertiary);
    font-family: 'Courier Prime', 'Courier New', monospace;
}

[data-theme="typewriter"] .saved-note:hover {
    border-color: var(--color-accent);
    box-shadow: none;
}

/* ==================== chalkboard ==================== */

:root[data-theme="chalkboard"] {
    --color-background-primary: oklch(0.22 0.04 160);
    --color-background-secondary: oklch(0.22 0.04 160);
    --color-background-tertiary: oklch(0.25 0.045 160);
    --color-border: oklch(0.45 0.05 160);
    --color-text-primary: oklch(0.93 0.013 95);
    --color-accent: oklch(0.85 0.15 80);
    --color-hover: oklch(0.3 0.05 160);
    --color-hover-dark: oklch(0.35 0.055 160);
    --color-disabled: oklch(0.55 0.04 160);
    --color-disabled-hover: oklch(0.65 0.04 160);
    --color-shadow-dark: transparent;
    --color-shadow-light: transparent;
    --color-glow-primary: transparent;
    --color-glow-secondary: transparent;
    --color-glow-tertiary: transparent;
}

[data-theme="chalkboard"] body {
    background:
        radial-gradient(ellipse 600px 200px at 15% 20%, oklch(0.93 0.013 95 / 0.04), transparent 70%),
        radial-gradient(ellipse 400px 180px at 85% 75%, oklch(0.93 0.013 95 / 0.05), transparent 70%),
        radial-gradient(ellipse 300px 120px at 60% 40%, oklch(0.93 0.013 95 / 0.03), transparent 70%),
        var(--color-background-primary);
    font-family: 'Marker Felt', 'Bradley Hand', 'Segoe Print', 'Chalkduster', 'Comic Sans MS', cursive;
}

[data-theme="chalkboard"] .app-container {
    background: transparent;
    box-shadow: none;
}

[data-theme="chalkboard"] h1 {
    text-shadow: 0 0 1px oklch(0.93 0.013 95 / 0.5);
    font-weight: normal;
    color: var(--color-text-primary);
    font-family: inherit;
}

[data-theme="chalkboard"] #timer {
    color: var(--color-accent);
    text-shadow: 0 0 2px oklch(0.85 0.15 80 / 0.4);
    font-weight: normal;
    font-family: inherit;
    width: 7rem;
    height: 7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px dashed var(--color-accent);
    border-radius: 50%;
    margin: 0 1rem;
    font-size: 2rem;
}

[data-theme="chalkboard"] .timer-button {
    color: var(--color-text-primary);
    text-shadow: 0 0 1px oklch(0.93 0.013 95 / 0.4);
    font-family: inherit;
}

[data-theme="chalkboard"] .timer-button:not(:disabled):hover {
    text-shadow: 0 0 2px oklch(0.93 0.013 95 / 0.6);
    box-shadow: none;
    background-color: transparent;
    transform: scale(1.3);
}

[data-theme="chalkboard"] .timer-button:not(:disabled):active {
    box-shadow: none;
    transform: scale(0.95);
}

[data-theme="chalkboard"] #notepad {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px dashed var(--color-border);
    font-family: inherit;
    font-size: 1.1rem;
    line-height: 1.6;
    text-shadow: 0 0 1px oklch(0.93 0.013 95 / 0.4);
}

[data-theme="chalkboard"] #notepad:focus {
    border-color: var(--color-accent);
    box-shadow: none;
}

[data-theme="chalkboard"] #notepad::placeholder {
    color: oklch(0.7 0.02 95 / 0.8);
    font-style: italic;
}

[data-theme="chalkboard"] .note-action-button {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px dashed var(--color-border);
    box-shadow: none;
    font-family: inherit;
    text-shadow: 0 0 1px oklch(0.93 0.013 95 / 0.4);
}

[data-theme="chalkboard"] .note-action-button:hover {
    box-shadow: none;
    background-color: var(--color-hover);
    border-color: var(--color-accent);
    transform: none;
}

[data-theme="chalkboard"] .note-action-button:active {
    box-shadow: none;
    background-color: var(--color-hover-dark);
    transform: translateY(1px);
}

[data-theme="chalkboard"] .saved-note {
    background: transparent;
    border: 1px dashed var(--color-border);
    font-family: inherit;
}

[data-theme="chalkboard"] .saved-note:hover {
    border-color: var(--color-accent);
    box-shadow: none;
}

/* ==================== dusk ==================== */

:root[data-theme="dusk"] {
    --time-progress: 0;
    --dusk-bg-start: oklch(0.88 0.06 50);
    --dusk-bg-end: oklch(0.18 0.07 280);
    --dusk-text-start: oklch(0.22 0.03 50);
    --dusk-text-end: oklch(0.85 0.04 280);
    --dusk-accent-start: oklch(0.55 0.16 35);
    --dusk-accent-end: oklch(0.7 0.15 320);
    --color-background-primary: var(--dusk-bg-start);
    --color-background-secondary: transparent;
    --color-background-tertiary: transparent;
    --color-text-primary: var(--dusk-text-start);
    --color-accent: var(--dusk-accent-start);
    --color-border: color-mix(in oklch, currentColor 25%, transparent);
    --color-hover: color-mix(in oklch, currentColor 12%, transparent);
    --color-hover-dark: color-mix(in oklch, currentColor 20%, transparent);
    --color-disabled: color-mix(in oklch, currentColor 50%, transparent);
    --color-disabled-hover: color-mix(in oklch, currentColor 65%, transparent);
    --color-shadow-dark: transparent;
    --color-shadow-light: transparent;
    --color-glow-primary: transparent;
    --color-glow-secondary: transparent;
    --color-glow-tertiary: transparent;
}

[data-theme="dusk"] body {
    background: color-mix(in oklch shorter hue, var(--dusk-bg-start), var(--dusk-bg-end) calc(var(--time-progress) * 100%));
    color: color-mix(in oklch shorter hue, var(--dusk-text-start), var(--dusk-text-end) calc(var(--time-progress) * 100%));
    transition: background-color 1.4s linear, color 1.4s linear;
}

[data-theme="dusk"] .app-container {
    background: transparent;
    box-shadow: none;
}

[data-theme="dusk"] h1 {
    text-shadow: none;
    font-weight: 400;
    letter-spacing: 0.02em;
}

[data-theme="dusk"] #timer {
    font-size: 1.1rem;
    font-weight: 400;
    color: inherit;
    text-shadow: none;
    margin: 0 1rem;
    opacity: 0.45;
    font-variant-numeric: tabular-nums;
}

[data-theme="dusk"] .timer-button {
    color: inherit;
    opacity: 0.5;
}

[data-theme="dusk"] .timer-button:not(:disabled):hover {
    text-shadow: none;
    box-shadow: none;
    background-color: var(--color-hover);
    transform: scale(1.2);
    opacity: 1;
}

[data-theme="dusk"] .timer-button:not(:disabled):active {
    box-shadow: none;
}

[data-theme="dusk"] #notepad {
    background: transparent;
    color: inherit;
    border: 1px solid var(--color-border);
    transition: border-color 1.4s linear;
}

[data-theme="dusk"] #notepad:focus {
    border-color: color-mix(in oklch shorter hue, var(--dusk-accent-start), var(--dusk-accent-end) calc(var(--time-progress) * 100%));
    box-shadow: none;
}

[data-theme="dusk"] .note-action-button {
    background: transparent;
    color: inherit;
    border: 1px solid var(--color-border);
    box-shadow: none;
}

[data-theme="dusk"] .note-action-button:hover {
    box-shadow: none;
    background-color: var(--color-hover);
    transform: none;
}

[data-theme="dusk"] .note-action-button:active {
    background-color: var(--color-hover-dark);
    transform: translateY(1px);
}

[data-theme="dusk"] .saved-note {
    background: transparent;
    border: 1px solid var(--color-border);
}

[data-theme="dusk"] .saved-note:hover {
    border-color: currentColor;
    box-shadow: none;
}

/* ==================== submarine ==================== */

:root[data-theme="submarine"] {
    --color-background-primary: oklch(0.14 0.06 25);
    --color-background-secondary: oklch(0.17 0.075 25);
    --color-background-tertiary: oklch(0.12 0.05 25);
    --color-border: oklch(0.4 0.16 25);
    --color-text-primary: oklch(0.85 0.08 30);
    --color-accent: oklch(0.7 0.22 25);
    --color-hover: oklch(0.22 0.1 25);
    --color-hover-dark: oklch(0.27 0.12 25);
    --color-disabled: oklch(0.5 0.13 25);
    --color-disabled-hover: oklch(0.6 0.15 25);
    --color-shadow-dark: oklch(0 0 0 / 0.5);
    --color-shadow-light: oklch(0 0 0 / 0.3);
    --color-glow-primary: oklch(0.7 0.22 25 / 0.3);
    --color-glow-secondary: oklch(0.7 0.22 25 / 0.15);
    --color-glow-tertiary: transparent;
}

[data-theme="submarine"] body {
    background: var(--color-background-primary);
    position: relative;
}

[data-theme="submarine"] body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 35%, oklch(0 0 0 / 0.55) 100%);
    pointer-events: none;
    z-index: 9998;
}

[data-theme="submarine"] body:not(.is-typing) {
    animation: submarine-alarm 2.6s ease-in-out infinite;
}

@keyframes submarine-alarm {
    0%, 100% { background-color: oklch(0.14 0.06 25); }
    50% { background-color: oklch(0.24 0.13 25); }
}

[data-theme="submarine"] .app-container {
    background: var(--color-background-secondary);
    border: 1px solid var(--color-border);
    box-shadow: 0 0 30px oklch(0.5 0.2 25 / 0.15);
}

[data-theme="submarine"] h1 {
    text-shadow: 0 0 8px oklch(0.7 0.22 25 / 0.4);
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
}

[data-theme="submarine"] #timer {
    color: var(--color-accent);
    text-shadow: 0 0 14px oklch(0.7 0.22 25 / 0.5);
    font-variant-numeric: tabular-nums;
}

[data-theme="submarine"] .timer-button:not(:disabled):hover {
    text-shadow: 0 0 8px oklch(0.7 0.22 25 / 0.5);
    box-shadow: none;
    background-color: var(--color-hover);
    transform: scale(1.3);
}

[data-theme="submarine"] .timer-button:not(:disabled):active {
    box-shadow: none;
    transform: scale(0.95);
}

[data-theme="submarine"] #notepad {
    background: var(--color-background-tertiary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

[data-theme="submarine"] #notepad:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 1px var(--color-accent), 0 0 20px oklch(0.7 0.22 25 / 0.25);
}

[data-theme="submarine"] .note-action-button {
    background: var(--color-background-tertiary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    box-shadow: none;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: 0.8rem;
}

[data-theme="submarine"] .note-action-button:hover {
    box-shadow: 0 0 12px oklch(0.7 0.22 25 / 0.3);
    background-color: var(--color-hover);
    border-color: var(--color-accent);
    transform: none;
}

[data-theme="submarine"] .note-action-button:active {
    box-shadow: none;
    background-color: var(--color-hover-dark);
    transform: translateY(1px);
}

[data-theme="submarine"] .saved-note {
    background: var(--color-background-tertiary);
    border: 1px solid var(--color-border);
}

[data-theme="submarine"] .saved-note:hover {
    border-color: var(--color-accent);
    box-shadow: 0 0 12px oklch(0.7 0.22 25 / 0.2);
}

/* ==================== receipt ==================== */

:root[data-theme="receipt"] {
    --color-background-primary: oklch(0.78 0.025 85);
    --color-background-secondary: oklch(0.995 0.004 85);
    --color-background-tertiary: oklch(0.995 0.004 85);
    --color-border: oklch(0.5 0.02 85);
    --color-text-primary: oklch(0.13 0.012 80);
    --color-accent: oklch(0.45 0.18 25);
    --color-hover: oklch(0.94 0.012 85);
    --color-hover-dark: oklch(0.88 0.015 85);
    --color-disabled: oklch(0.5 0.02 85);
    --color-disabled-hover: oklch(0.4 0.025 85);
    --color-shadow-dark: oklch(0.2 0.02 85 / 0.22);
    --color-shadow-light: oklch(0.2 0.02 85 / 0.1);
    --color-glow-primary: transparent;
    --color-glow-secondary: transparent;
    --color-glow-tertiary: transparent;
}

[data-theme="receipt"] body {
    background:
        repeating-linear-gradient(0deg, oklch(0.5 0.02 85 / 0.02) 0 1px, transparent 1px 4px),
        var(--color-background-primary);
    font-family: 'SF Mono', 'JetBrains Mono', 'Menlo', 'Consolas', 'Courier New', monospace;
}

[data-theme="receipt"] .app-container {
    max-width: 26rem;
    background: var(--color-background-secondary);
    box-shadow: 0 2px 18px var(--color-shadow-dark), 0 1px 3px var(--color-shadow-light);
    border-top: 2px dashed var(--color-border);
    border-bottom: 2px dashed var(--color-border);
    padding: 1.5rem 1.25rem;
    font-family: inherit;
}

[data-theme="receipt"] h1 {
    text-shadow: 0 0 0.5px currentColor, 0.3px 0 0.4px oklch(0.13 0.012 80 / 0.45);
    font-family: inherit;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 1.1rem;
    text-align: center;
    border-bottom: 1px dashed var(--color-border);
    padding-bottom: 0.6rem;
    color: var(--color-text-primary);
}

[data-theme="receipt"] .title-container {
    grid-template-columns: 1fr;
}

[data-theme="receipt"] .timer-container {
    border-bottom: 1px dashed var(--color-border);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

[data-theme="receipt"] #timer {
    font-family: inherit;
    color: var(--color-text-primary);
    text-shadow: 0 0 0.6px currentColor, 0.4px 0 0.5px oklch(0.13 0.012 80 / 0.5);
    font-size: 1.8rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.1em;
}

[data-theme="receipt"] .timer-button {
    color: var(--color-text-primary);
    font-family: inherit;
}

[data-theme="receipt"] .timer-button:not(:disabled):hover {
    text-shadow: none;
    box-shadow: none;
    background-color: var(--color-hover);
    transform: scale(1.2);
}

[data-theme="receipt"] .timer-button:not(:disabled):active {
    box-shadow: none;
    transform: scale(0.95);
}

[data-theme="receipt"] #notepad {
    background: transparent;
    color: var(--color-text-primary);
    border: none;
    font-family: inherit;
    font-size: 0.95rem;
    line-height: 1.55;
    padding: 0.5rem;
    text-shadow: 0 0 0.5px currentColor, 0.3px 0 0.4px oklch(0.13 0.012 80 / 0.45);
}

[data-theme="receipt"] #notepad:focus {
    border: none;
    box-shadow: none;
    outline: none;
}

[data-theme="receipt"] #status {
    font-family: inherit;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
    border-top: 1px dashed var(--color-border);
    padding-top: 0.6rem;
}

[data-theme="receipt"] #savedNotes {
    border-top: 1px dashed var(--color-border);
    padding-top: 1rem;
}

[data-theme="receipt"] #savedNotes h2 {
    font-family: inherit;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-align: center;
}

[data-theme="receipt"] .saved-note {
    background: transparent;
    border: none;
    border-bottom: 1px dashed var(--color-border);
    border-radius: 0;
    font-family: inherit;
    font-size: 0.85rem;
    padding: 0.6rem 0.25rem;
}

[data-theme="receipt"] .saved-note:hover {
    background-color: var(--color-hover);
    border-color: var(--color-text-primary);
    box-shadow: none;
}

[data-theme="receipt"] .note-action-button {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    box-shadow: none;
    font-family: inherit;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.7rem;
}

[data-theme="receipt"] .note-action-button:hover {
    box-shadow: none;
    background-color: var(--color-hover);
    transform: none;
}

[data-theme="receipt"] .note-action-button:active {
    box-shadow: none;
    background-color: var(--color-hover-dark);
    transform: translateY(1px);
}