:root {
    --bg-main: #ffffff;
    --bg-card: #ffffff;
    --bg-card-soft: #fafafa;
    --accent: #000000;
    --accent-soft: #000000;
    --text-primary: #000000;
    --text-muted: #6a6a6a;
    --divider: #111111;
  }

  * {
    box-sizing: border-box;
  }

  body {
    margin: 0;
    background: var(--bg-main);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    height: 100vh;

    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    color: var(--text-primary);
  }

  .digit-font {
    font-family: "Doto", system-ui, monospace;
    letter-spacing: 0.04em;
  }

  .phone-shell {
    position: relative;

    width: 100%;
    max-width: 420px;
    /* phone width */

    height: 100vh;

    margin: auto;

    background: var(--bg-main);

    display: flex;
    flex-direction: column;

    overflow: hidden;
  }

  .status-bar {
    display: none;
  }

  .status-bar-right {
    display: flex;
    gap: 6px;
    align-items: center;
  }

  .screen {
    flex: 1;
    border-radius: 0;
    padding: 8px 0 0;
    background: var(--bg-main);
    display: flex;
    flex-direction: column;
    gap: 24px;
  }

  .screen-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 4px;
  }

  .screen-title {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 0.02em;
  }

  .header-logo {
    height: 80px;
    width: auto;
    object-fit: contain;
    display: block;
  }

  .kebab {
    display: none;
  }

  .lcd-wrap {
    display: flex;
    justify-content: center;
    margin-top: 4px;
    margin-bottom: 4px;
  }

  .lcd-label {
    font-size: 40px;
    font-family: doto;
    text-transform: uppercase;
    font-weight: 800;

    color: #000000;
    margin-bottom: 8px;
    font-family: "Doto", system-ui, monospace;
    text-align: center;
    width: 100%;


  }

  .alarm-list {
    margin-top: 6px;
    padding-top: 12px;
    border-top: 1px solid #e0e0e0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
  }

  .alarm-card {
    background: #ffffff;
    border-radius: 18px;
    padding: 14px 16px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 4px 0 #000000;
    cursor: pointer;
    border: 3px solid #000000;
    transition: transform 0.1s ease, box-shadow 0.1s ease, background 0.1s ease;
  }

  .alarm-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 0 #000000;
  }

  .alarm-main {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .alarm-caption {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    gap: 4px;
  }

  .alarm-caption-dot {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    border: 2px solid #000000;
    background: transparent;
    margin-top: 4px;
  }

  .alarm-caption-text {
    display: flex;
    gap: 4px;
    align-items: center;
  }

  .alarm-label {
    font-size: 11px;
    color: var(--text-muted);
  }

  .alarm-time-row {
    display: flex;
    align-items: flex-end;
    gap: 6px;
  }

  .alarm-time {
    font-size: 30px;
    line-height: 1;
    font-weight: 600;
    letter-spacing: 0.03em;
  }

  .alarm-meridiem {
    font-size: 13px;
    text-transform: lowercase;
    color: var(--text-muted);
    margin-bottom: 3px;
  }

  .toggle-pill {
    width: 44px;
    height: 24px;
    border-radius: 999px;
    background: #f0f0f0;
    box-shadow: inset 0 0 0 1px #000000;
    padding: 3px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    transition: background 0.16s ease, box-shadow 0.16s ease;
  }

  .toggle-knob {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #ffffff;
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.7);
    transition: transform 0.16s ease, background 0.16s ease;
  }

  .toggle-pill.on {
    background: #000000;
    box-shadow: inset 0 0 0 1px #000000;
  }

  .toggle-pill.on .toggle-knob {
    transform: translateX(18px);
    background: #ffffff;
  }

  .nav-bar {
    position: fixed;

    left: 50%;
    transform: translateX(-50%);

    bottom: 16px;

    width: calc(100% - 24px);
    max-width: 420px;
    /* match phone width */

    padding: 6px 10px;
    border-radius: 18px;

    background: var(--bg-card-soft);
    border: 2px solid #000000;

    display: flex;
    gap: 8px;

    z-index: 10;
  }




  .nav-item.active {
    background: #000000;
    color: #ffffff;
  }

  .nav-icon {
    font-size: 18px;
    line-height: 1;
  }

  .nav-label {
    font-size: 11px;
    text-transform: lowercase;
  }

  .nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: 6px 8px;
    border-radius: 999px;
    border: 2px solid #000000;
    background: #ffffff;
    cursor: pointer;
    font-size: 11px;
    color: var(--text-muted);
  }

  .nav-item.active {
    background: #000000;
    color: #ffffff;
  }

  .nav-icon {
    font-size: 18px;
    line-height: 1;
  }

  .nav-label {
    font-size: 11px;
    text-transform: lowercase;
  }

  /* time picking overlay */
  .time-picker-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.25);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 40;
  }

  /* date picking overlay */
  .date-picker-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.25);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 30;
  }

  .date-picker {
    width: 100%;
    max-width: 360px;
    border-radius: 20px;
    padding: 18px 18px 16px;
    background: #ffffff;
    color: #000000;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    border: 2px solid #000000;
  }

  .date-picker-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-size: 14px;
    font-weight: 600;
  }

  .date-picker-body {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .date-picker-actions {
    margin-top: 14px;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    font-size: 13px;
  }

  .calendar-wrap {
    margin-top: 8px;
    border-top: 1px solid #e0e0e0;
    padding-top: 12px;
  }

  .calendar-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
  }

  .calendar-month {
    font-weight: 700;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .cal-nav {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    border: 1px solid #000000;
    background: #ffffff;
    color: #000000;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
  }

  .cal-nav:active {
    transform: translateY(1px);
  }

  .calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 6px;
  }

  .calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
  }

  .cal-day {
    height: 34px;
    border-radius: 10px;
    border: 1px solid #000000;
    background: #ffffff;
    color: #000000;
    cursor: pointer;
    font: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .cal-day.out {
    opacity: 0.35;
    border-style: dashed;
  }

  .cal-day.selected {
    background: #000000;
    color: #ffffff;
  }

  .calendar-bottom {
    margin-top: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
  }

  .time-picker {
    width: 100%;
    max-width: 320px;
    border-radius: 20px;
    padding: 18px 18px 14px;
    background: #ffffff;
    box-shadow: 0 6px 0 #000000;
    border: 2px solid #000000;
  }

  .time-picker-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
  }

  .time-picker-title {
    font-size: 13px;
    color: var(--text-muted);
  }

  .time-digital {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    margin-bottom: 14px;
  }

  .time-box {
    min-width: 50px;
    padding: 10px 8px 6px;
    padding-top: 20px;
    padding-bottom: 20px;
    border-radius: 18px;
    background: #ffffff;
    border: 2px solid #000000;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .time-number {
    font-size: 40px;
  }

  .time-box-input {
    width: 100%;
    border: none;
    outline: none;
    background: transparent;
    text-align: center;
    padding: 0;
    margin: 0;
    color: #000000;
    caret-color: #000000;
  }

  .time-box-input::selection {
    background: #000000;
    color: #ffffff;
  }

  .time-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.13em;
    color: var(--text-muted);
    margin-top: 3px;
  }

  .time-colon {
    font-size: 26px;
    color: var(--text-muted);
    align-self: center;
    margin: 0 6px;
    margin-bottom: 20px;

  }

  .ampm-toggle {
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
    gap: 6px;
  }

  .chip {
    min-width: 48px;
    padding: 6px 10px 4px;
    border-radius: 999px;
    background: #ffffff;
    border: 2px solid #000000;
    text-align: center;
    font-size: 11px;
    text-transform: lowercase;
    cursor: pointer;
    color: var(--text-muted);
  }

  .chip.active {
    background: #000000;
    border-color: #000000;
    color: #ffffff;
    font-weight: 600;
  }

  .time-input-row {
    display: none;
  }

  .time-picker-actions {
    margin-top: 14px;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    font-size: 13px;
  }

  .btn-text {
    background: none;
    border: none;
    padding: 4px 6px;
    color: #000000;
    font: inherit;
    cursor: pointer;
  }

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

  .hidden-native-input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 0;
    height: 0;
  }

  /* details overlay */
  .details-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.25);
    opacity: 0;
    pointer-events: none;
    z-index: 19;
    transition: opacity 0.24s ease-out;
  }

  .details-overlay.open {
    opacity: 1;
    pointer-events: auto;
  }

  .details-sheet {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;

    background: #ffffff;

    border-radius: 24px 24px 0 0;
    padding: 18px 18px 20px;

    box-shadow: 0 -6px 0 #000000;
    border-top: 2px solid #000000;

    z-index: 20;

    transform: translateY(100%);
    opacity: 0;
    pointer-events: none;

    transition:
      transform 0.32s cubic-bezier(0.22, 0.61, 0.36, 1),
      opacity 0.24s ease-out;
  }

  .details-sheet.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .details-grabber {
    width: 38px;
    height: 4px;
    border-radius: 999px;
    background: #000000;
    margin: 0 auto 10px;
  }

  .details-header {
    margin-bottom: 14px;
    display: none;
  }

  .details-title {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 2px;
  }

  .details-subtitle {
    font-size: 12px;
    color: var(--text-muted);
  }

  .details-time-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 10px;
    margin-bottom: 14px;
  }

  .details-time-main {
    font-size: 32px;
    font-weight: 600;
  }

  .details-time-period {
    font-size: 14px;
    margin-left: 4px;
    text-transform: lowercase;
  }

  .details-edit-chip {
    border-radius: 999px;
    padding: 6px 12px;
    border: 2px solid #000000;
    font-size: 12px;
    background-color: #ffffff;
  }

  .details-day-row {
    display: flex;
    gap: 6px;
    margin-bottom: 14px;
  }

  .day-chip {
    width: 36px;
    height: 26px;
    border-radius: 9px;

    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    cursor: pointer;
    background-color: #ebebeb98;
  }

  .day-chip.active {
    background: #000000;
    color: #ffffff;
  }

  .details-inline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 13px;
  }

  .details-inline span:first-child {
    color: var(--text-muted);
  }

  .details-settings {
    margin-top: 4px;
    border-radius: 10px;
    overflow: hidden;
  }

  .setting-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 52px;
    padding: 10px 0;
    font-size: 13px;
    background-color: #ebebeb98;
    border-bottom: 2px solid #ffffff;
    padding-left: 15px;
    padding-right: 15px;
  }

  .details-settings .setting-card:first-child {
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
  }

  .details-settings .setting-card:last-child {
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
    border-bottom: none;
  }

  .setting-left {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .setting-icon {
    width: 18px;
    text-align: center;
  }

  .setting-label {
    color: var(--text-muted);
  }

  .setting-value {
    font-weight: 600;
  }

  /* duration slider */
  .duration-slider-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 200px;
    width: 100%;
    justify-content: flex-end;
    flex: 1;
    min-width: 0;
  }

  .duration-value-pill {
    min-width: 56px;
    padding: 6px 12px 5px;
    border-radius: 999px;
    background: #ffffff;

    font-family: "Doto", system-ui, monospace;
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0.02em;
    text-align: center;
    color: #000000;
    line-height: 1.2;
    transition: box-shadow 0.1s ease, transform 0.1s ease;
  }

  .duration-value-pill:focus {
    outline: none;
  }

  .duration-slider-track {
    flex: 1;
    min-width: 80px;
    height: 8px;
    -webkit-appearance: none;
    appearance: none;
    background: #ffffff;
    border: 2px solid #000000;
    border-radius: 999px;
    outline: none;
  }

  .duration-slider-track::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #ffffff;
    border: 2px solid #000000;
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.7);
    cursor: pointer;
    transition: transform 0.12s ease, box-shadow 0.12s ease;
  }

  .duration-slider-track::-webkit-slider-thumb:hover {
    transform: scale(1.08);
  }

  .duration-slider-track::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #ffffff;
    border: 2px solid #000000;
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.7);
    cursor: pointer;
    transition: transform 0.12s ease;
  }

  .duration-slider-track::-moz-range-thumb:hover {
    transform: scale(1.08);
  }

  .duration-slider-track::-moz-range-track {
    height: 8px;
    border: 2px solid #000000;
    border-radius: 999px;
    background: #ffffff;
  }

  .setting-toggle {
    width: 32px;
    height: 18px;
    border-radius: 999px;
    border: 1px solid #000000;
    position: relative;
  }

  .setting-toggle::after {
    content: "";
    position: absolute;
    top: 2px;
    left: 2px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #000000;
  }

  .details-footer {
    display: flex;
    justify-content: space-between;
    margin-top: 14px;
    font-size: 13px;
  }

  .details-btn {
    min-width: 100px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: 600;
    padding: 8px 14px;
    border-radius: 999px;
    border: 3px solid #000000;
    text-align: center;
    cursor: pointer;


  }

  #details-btn:hover {

    background: #d8d7d7b9;


  }

  #details-delete {
    background: #ffffff;
    color: #000000;
  }

  #details-delete:hover {
    border: 3px dashed #000000;
    background: #d8d7d7b9;
  }

  #details-save {
    background: #000000;
    color: #ffffff;
  }

  svg {
    font-family: monospace;
  }

  .new-alarm-card {
    border-radius: 18px;
    padding: 30px 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px dashed #000000;
    background: #ffffff;
    cursor: pointer;
    text-align: center;
    font-size: 14px;
    font-weight: 500;
  }

  .new-alarm-card:hover {
    border: 3px solid #000000;
  }

  .new-alarm-card span {
    margin-left: 6px;
  }

  /* mobile css */
  @media (max-width: 600px) {
    body {
      padding: 16px 10px 24px;
      align-items: stretch;
    }

    .phone-shell {
      max-width: 420px;
      padding-bottom: 24px;
    }

    .screen-title {
      font-size: 22px;
    }

    .lcd-label {
      font-size: 24px;
      margin-bottom: 4px;
    }

    .lcd-wrap svg {
      width: 100%;
      height: auto;
    }

    .alarm-list {
      grid-template-columns: 1fr;
      gap: 16px;
    }

    .alarm-card,
    .new-alarm-card {
      padding: px 12px 14px;
    }

    .details-sheet {
      border-radius: 18px 18px 0 0;
      padding: 14px 14px 18px;
    }

    .details-time-main {
      font-size: 26px;
    }

    .time-picker {
      max-width: 340px;
      padding: 16px 14px 12px;
    }

    .time-box {
      min-width: 60px;
    }

    .time-number {
      font-size: 24px;
    }

    .date-picker {
      max-width: 340px;
      padding: 16px 14px 14px;
    }
  }

  .animation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
  }

  .animation-card {
    background: #ffffff;
    border-radius: 18px;
    padding: 16px;

    border: 3px solid #000000;
    box-shadow: 0 4px 0 #000000;

    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .animation-title {
    font-size: 15px;
    font-weight: 600;
  }

  .animation-desc {
    font-size: 12px;
    color: var(--text-muted);
  }

  .animation-controls {
    display: flex;
    gap: 10px;
    margin-top: 8px;
  }

  .anim-btn {
    padding: 8px 16px;
    border-radius: 999px;
    border: 3px solid #000;
    background: #fff;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s ease;
  }

  /* play active */
  .play-btn.active {
    background: #000;
    color: #fff;
  }

  /* stop disabled */
  .stop-btn.disabled {
    border: 3px dashed #000;
    color: #999;
    background: #fff;
    cursor: default;
  }


  @media (min-width:700px) {

    .details-sheet {

      left: 50%;
      right: auto;

      width: 420px;
      max-width: 420px;

      transform: translate(-50%, 100%);

    }

    .details-sheet.open {
      transform: translate(-50%, 0);
    }

  }