:root {
    --bg: #0f0a0a;
    --card: #1a1111;
    --input-bg: #0f0a0a;
    --border: #2e1a1a;
    --text: #e8d8d8;
    --text-muted: #c4a8a8;
    --text-dim: #9e7a7a;
    --text-dimmer: #8a6a6a;
    --accent: #ef4444;
    --accent-hover: #dc2626;
    --stop: #22c55e;
    --stop-hover: #16a34a;
    --running: #f87171;
    --shadow: rgba(0, 0, 0, 0.6);
    --tab-inactive: #110c0c;
    --focus-ring: #f87171;
    color-scheme: dark;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg: #fef2f2;
        --card: #ffffff;
        --input-bg: #fef2f2;
        --border: #fecaca;
        --text: #1c1917;
        --text-muted: #57534e;
        --text-dim: #6b6560;
        --text-dimmer: #78716c;
        --accent: #dc2626;
        --accent-hover: #b91c1c;
        --stop: #16a34a;
        --stop-hover: #15803d;
        --running: #dc2626;
        --shadow: rgba(120, 0, 0, 0.12);
        --tab-inactive: #f5e6e6;
        --focus-ring: #dc2626;
        color-scheme: light;
    }
}

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

body {
    font-family:
        -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
        sans-serif;
    background: var(--bg);
    color: var(--text);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100dvh;
    padding: 0;
}

@media (min-width: 480px) {
    body {
        padding: 16px;
    }
}

.wrapper {
    width: 100%;
    max-width: 100%;
    flex: 1;
    filter: drop-shadow(0 10px 15px var(--shadow))
        drop-shadow(0 30px 50px var(--shadow))
        drop-shadow(0 50px 80px var(--shadow));
}

@media (min-width: 480px) {
    .wrapper {
        max-width: 420px;
    }
}

/* Site Footer */
.site-footer {
    width: 100%;
    max-width: 420px;
    text-align: center;
    padding: 16px 20px 24px;
    font-size: 0.75rem;
    color: var(--text-dimmer);
}

.site-footer a {
    color: var(--text-dim);
    text-decoration: none;
}

.site-footer a:hover {
    color: var(--text-muted);
    text-decoration: underline;
}

/* Site Header */
.site-header {
    text-align: center;
    padding: 32px 20px 32px;
}

.site-title {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: 6px;
    text-transform: uppercase;
    color: var(--accent);
    line-height: 1;
}

.site-title-prefix {
    display: block;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 5px;
}

.site-tagline {
    font-size: 0.7rem;
    color: var(--text-dim);
    font-style: italic;
    margin-top: 7px;
    letter-spacing: 0.3px;
}

@media (min-width: 480px) {
    .site-header {
        padding: 40px 20px 24px;
    }
    .site-title {
        font-size: 2.6rem;
        letter-spacing: 8px;
    }
    .site-title-prefix {
        font-size: 0.7rem;
        letter-spacing: 5px;
    }
    .site-tagline {
        font-size: 0.75rem;
        margin-top: 8px;
    }
}

/* Tabs */
.tabs {
    display: flex;
    gap: 4px;
}

.tab {
    flex: 1;
    padding: 12px 0;
    border: none;
    background: var(--tab-inactive);
    color: var(--text-dim);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    letter-spacing: 0.3px;
    transition: all 0.25s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
}

.tab:first-child {
    border-radius: 0;
}

.tab:last-child {
    border-radius: 0;
}

@media (min-width: 480px) {
    .tab:first-child {
        border-radius: 16px 6px 0 0;
    }

    .tab:last-child {
        border-radius: 6px 16px 0 0;
    }
}

.tab:hover:not(.active) {
    color: var(--text-muted);
}

.tab.active {
    background: var(--card);
    color: var(--text);
    cursor: default;
}

.tab .tab-icon {
    font-size: 0.7rem;
}

.tab.active .tab-icon {
    font-size: 0.75rem;
}

/* Card */
.card {
    background: var(--card);
    border-radius: 0;
    padding: 28px 20px 32px;
    width: 100%;
}

@media (min-width: 480px) {
    .card {
        border-radius: 0 0 20px 20px;
    }
}

@media (min-width: 480px) {
    .card {
        padding: 32px 40px 40px;
    }
    .tab {
        padding: 14px 0;
        font-size: 0.85rem;
    }
}

h1 {
    font-size: 1.2rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 4px;
    color: var(--accent);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

@media (min-width: 480px) {
    h1 {
        font-size: 1.3rem;
        margin-bottom: 6px;
    }
}

.subtitle {
    text-align: center;
    font-size: 0.72rem;
    color: var(--text-dim);
    margin-bottom: 24px;
    font-style: italic;
}

@media (min-width: 480px) {
    .subtitle {
        margin-bottom: 28px;
    }
}

/* Stacked panels */
.panels {
    display: grid;
}

.panel {
    grid-area: 1 / 1;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.panel.active {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
}

/* Rate Toggle */
.pill-toggle {
    display: flex;
    background: var(--input-bg);
    border-radius: 10px;
    padding: 4px;
    margin-bottom: 16px;
    border: 1px solid var(--border);
}

.pill-toggle button {
    flex: 1;
    padding: 8px 0;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--text-dim);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    transition: all 0.2s;
}

.pill-toggle button.active {
    background: var(--accent);
    color: #fff;
}

.pill-toggle button:not(.active):hover {
    color: var(--text-muted);
}

.inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 24px;
}

@media (min-width: 480px) {
    .inputs {
        gap: 16px;
        margin-bottom: 28px;
    }
}

.field label {
    display: block;
    font-size: 0.7rem;
    color: var(--text-dim);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.label-row {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 6px;
}

.label-row label {
    margin-bottom: 0;
}

.currency-label {
    font-size: 0.7rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

@media (min-width: 480px) {
    .currency-label {
        font-size: 0.75rem;
    }
}

.currency-toggle {
    background: none;
    border: none;
    padding: 0;
    font-size: 0.7rem;
    font-family: inherit;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-dim);
    cursor: pointer;
    text-decoration: underline;
    text-decoration-style: dashed;
    text-underline-offset: 2px;
    text-decoration-color: var(--text-dimmer);
    line-height: inherit;
}

.currency-toggle:hover {
    color: var(--text-muted);
}

.currency-toggle:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 2px;
    border-radius: 2px;
}

@media (min-width: 480px) {
    .field label {
        font-size: 0.75rem;
    }
}

.field input {
    width: 100%;
    padding: 12px 10px;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-size: 1.05rem;
    text-align: center;
    outline: none;
    transition: border-color 0.2s;
    -webkit-appearance: none;
}

@media (min-width: 480px) {
    .field input {
        padding: 12px 14px;
        font-size: 1.1rem;
    }
}

.field input:focus {
    border-color: var(--accent);
}

/* Focus styles */
.field input:focus-visible {
    border-color: var(--focus-ring);
    box-shadow: 0 0 0 2px var(--focus-ring);
}

.btn:focus-visible,
.tab:focus-visible,
.pill-toggle button:focus-visible,
.adjust-toggle:focus-visible,
.share-toggle:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 2px;
}

.adjust-panel input[type='datetime-local']:focus-visible {
    border-color: var(--focus-ring);
    box-shadow: 0 0 0 2px var(--focus-ring);
}

/* Reduced motion */
@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;
    }
}

/* Cost Display */
.cost-display {
    text-align: center;
    padding: 24px 0 20px;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
}

@media (min-width: 480px) {
    .cost-display {
        padding: 32px 0 24px;
        margin-bottom: 28px;
    }
}

.cost-label {
    font-size: 0.72rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.cost-value {
    font-size: 2.6rem;
    font-weight: 700;
    color: var(--accent);
    font-variant-numeric: tabular-nums;
    transition: color 0.3s;
    line-height: 1.2;
}

@media (min-width: 480px) {
    .cost-value {
        font-size: 3.2rem;
    }
}

.cost-value.running {
    color: var(--running);
}

.timer {
    font-size: 1rem;
    color: var(--text-dimmer);
    margin-top: 10px;
    font-variant-numeric: tabular-nums;
}

.adjust-toggle {
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 0.78rem;
    cursor: pointer;
    margin-top: 14px;
    display: none;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 100%;
    transition: color 0.2s;
}

.adjust-toggle:hover {
    color: var(--text-muted);
}
.adjust-toggle.visible {
    display: inline-flex;
}

.adjust-panel {
    max-height: 0;
    overflow: hidden;
    transition:
        max-height 0.3s ease,
        margin-top 0.3s ease;
    margin-top: 0;
}

.adjust-panel.open {
    max-height: 80px;
    margin-top: 14px;
}

.adjust-panel label {
    display: block;
    font-size: 0.68rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 6px;
    text-align: center;
}

.adjust-panel input[type='datetime-local'] {
    width: 100%;
    padding: 10px 12px;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-size: 0.9rem;
    text-align: center;
    outline: none;
    transition: border-color 0.2s;
    color-scheme: inherit;
}

.adjust-panel input[type='datetime-local']:focus {
    border-color: var(--accent);
}

.duration-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 24px;
}

@media (min-width: 480px) {
    .duration-inputs {
        gap: 16px;
        margin-bottom: 28px;
    }
}

.btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    letter-spacing: 0.5px;
    transition:
        transform 0.1s,
        opacity 0.2s;
    -webkit-tap-highlight-color: transparent;
}

.btn:active {
    transform: scale(0.98);
}
.btn-start {
    background: var(--accent);
    color: #fff;
}
.btn-start:hover {
    background: var(--accent-hover);
}
.btn-stop {
    background: var(--stop);
    color: #fff;
}
.btn-stop:hover {
    background: var(--stop-hover);
}

.btn-reset {
    background: transparent;
    color: var(--text-dim);
    margin-top: 10px;
    font-size: 0.85rem;
    padding: 8px;
}

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

.share-toggle {
    background: none;
    border: 1px dashed var(--border);
    border-radius: 10px;
    color: var(--text-dim);
    font-size: 0.78rem;
    cursor: pointer;
    margin-top: 14px;
    display: none;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 100%;
    padding: 9px 0;
    transition:
        color 0.2s,
        border-color 0.2s,
        background 0.2s;
    -webkit-tap-highlight-color: transparent;
}

.share-toggle:hover {
    color: var(--text-muted);
    border-color: var(--text-dimmer);
    background: var(--input-bg);
}

.share-toggle.visible {
    display: inline-flex;
}

.share-panel {
    max-height: 0;
    overflow: hidden;
    transition:
        max-height 0.35s ease,
        margin-top 0.35s ease;
    margin-top: 0;
}

.share-panel.open {
    max-height: 250px;
    margin-top: 14px;
}

.message-preview {
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.message-text {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.55;
    min-height: calc(0.82rem * 1.55 * 3);
    font-variant-numeric: tabular-nums;
}

.message-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.message-action-btn {
    background: none;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-dim);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition:
        color 0.2s,
        border-color 0.2s;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
}

.message-action-btn:hover {
    color: var(--text-muted);
    border-color: var(--text-dimmer);
}

.message-action-btn:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 2px;
}

.toast {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%) translateY(16px);
    background: var(--card);
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px 28px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.2px;
    pointer-events: none;
    opacity: 0;
    box-shadow:
        0 4px 16px var(--shadow),
        0 1px 4px var(--shadow);
    transition:
        opacity 0.25s ease,
        transform 0.25s ease;
    white-space: nowrap;
    z-index: 100;
}

.toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.actions {
    display: flex;
    flex-direction: column;
}

.hint {
    text-align: center;
    font-size: 0.72rem;
    color: var(--text-dim);
    margin-top: 16px;
    line-height: 1.5;
    max-height: 60px;
    opacity: 1;
    overflow: hidden;
    transition:
        opacity 0.3s,
        max-height 0.3s ease,
        margin-top 0.3s ease;
}

.hint.hidden {
    opacity: 0;
    max-height: 0;
    margin-top: 0;
}

.manual-breakdown {
    font-size: 0.72rem;
    color: var(--text-dimmer);
    margin-top: 8px;
    text-align: center;
}

/* Notes */
.notes {
    padding: 24px 20px 32px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

@media (min-width: 480px) {
    .notes {
        padding: 28px 0 40px;
    }
}

.notes-title {
    font-size: 0.65rem;
    font-weight: 400;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.notes-title::before,
.notes-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

.note {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.6;
    padding: 12px 14px 12px 16px;
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    background: var(--card);
    border-radius: 8px;
    position: relative;
}

.note::before {
    content: '\201C';
    position: absolute;
    top: -4px;
    right: 12px;
    font-size: 2rem;
    line-height: 1;
    color: var(--border);
    font-family: Georgia, serif;
    pointer-events: none;
}