/* ============================================================
   CSS Custom Properties (Theme Variables)
   ============================================================ */
:root {
  --color-bg: #0f1117;
  --color-surface: #1a1d27;
  --color-accent: #6c63ff;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-text-heading: #f8fafc;
  --color-border: #2d3148;
  --color-danger: #ef4444;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --font-sans:
    system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

/* ============================================================
   Light Theme Override
   Applied when <html data-theme="light">
   ============================================================ */
[data-theme="light"] {
  --color-bg: #f0f2f8;
  --color-surface: #ffffff;
  --color-accent: #5b52e0;
  --color-text: #1e2130;
  --color-text-muted: #1d232b;
  --color-text-heading: #0f1117;
  --color-border: #d1d5e8;
  --color-danger: #dc2626;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .btn:hover,
[data-theme="light"] .btn:focus-visible {
  background-color: #c7cbe0;
}

/* ============================================================
   Reset & Base
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  padding: 1rem;
}

ul {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
}

input {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================================
   Accessibility Utility
   ============================================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   Site Header
   ============================================================ */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-heading);
  letter-spacing: 0.02em;
}

/* Header action buttons group */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Shared style for icon-only header buttons */
.icon-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.25rem;
  line-height: 1;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  transition:
    color 0.2s,
    background-color 0.2s;
}

.icon-btn:hover,
.icon-btn:focus-visible {
  color: var(--color-accent);
  background-color: rgba(108, 99, 255, 0.12);
  outline: none;
}

.settings-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.4rem;
  line-height: 1;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  transition:
    color 0.2s,
    background-color 0.2s;
}

.settings-btn:hover,
.settings-btn:focus-visible {
  color: var(--color-accent);
  background-color: rgba(108, 99, 255, 0.12);
  outline: none;
}

/* ============================================================
   Settings Panel
   ============================================================ */
.settings-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 280px;
  height: 100%;
  background-color: var(--color-surface);
  border-left: 1px solid var(--color-border);
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.5);
  padding: 2rem 1.5rem;
  z-index: 100;
  transition: transform 0.25s ease;
}

.settings-panel--hidden {
  transform: translateX(100%);
}

.settings-panel__title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-heading);
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.settings-panel__list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.settings-panel__label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: var(--color-text);
  cursor: pointer;
}

.settings-panel__label input[type="checkbox"] {
  accent-color: var(--color-accent);
  width: 1rem;
  height: 1rem;
  cursor: pointer;
}

.settings-panel__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.1rem;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  transition: color 0.2s;
}

.settings-panel__close:hover,
.settings-panel__close:focus-visible {
  color: var(--color-text-heading);
  outline: none;
}

/* Settings sections (name, visibility, etc.) */
.settings-section {
  margin-bottom: 1.5rem;
}

.settings-section__label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.6rem;
}

.settings-name-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.settings-name-row .text-input {
  flex: 1;
}

/* ============================================================
   Dashboard Grid Layout
   ============================================================ */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-areas:
    "clock     clock"
    "timer     todos"
    "bookmarks todos";
  gap: 1.25rem;
}

/* ============================================================
   Widget Base Card
   ============================================================ */
.widget {
  background-color: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  min-width: 0;
}

#widget-clock {
  grid-area: clock;
  text-align: center;
}

#widget-timer {
  grid-area: timer;
  text-align: center;
}

#widget-todos {
  grid-area: todos;
  align-self: stretch;
}

#widget-bookmarks {
  grid-area: bookmarks;
  align-self: stretch;
}

.clock-time {
  font-size: 2.2rem;
}

#widget-timer,
#widget-todos {
  min-height: 220px;
}

/* bookmark-input-group is defined in the Bookmarks Widget section below */

.widget--hidden {
  display: none;
}

.widget__heading {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

/* ============================================================
   Clock Widget
   ============================================================ */
.clock-greeting {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.clock-time {
  font-size: 2.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--color-text-heading);
  letter-spacing: 0.04em;
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.clock-date {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ============================================================
   Timer Widget
   ============================================================ */
.timer-display {
  font-size: 3rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--color-text-heading);
  letter-spacing: 0.06em;
  margin-bottom: 1.25rem;
  text-align: center;
}

.timer-controls {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Duration setter row below the controls */
.timer-duration-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 0.75rem;
}

.timer-duration-input {
  width: 4.5rem;
  text-align: center;
  padding: 0.35rem 0.5rem;
}

.timer--done {
  border-color: var(--color-accent);
  box-shadow:
    0 0 0 3px rgba(108, 99, 255, 0.35),
    var(--shadow);
}

.timer--done .timer-display {
  color: var(--color-accent);
}

/* ============================================================
   To-Do List Widget
   ============================================================ */
.todo-input-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.todo-input-row .text-input {
  flex: 1;
}

/* To-Do item title — done state */
.todo-title {
  flex: 1;
  word-break: break-word;
}

.todo-title--done {
  text-decoration: line-through;
  color: var(--color-text-muted);
}

/* Inline edit input inside a todo <li> */
.todo-edit-input {
  flex: 1;
  padding: 0.25rem 0.5rem;
  font-size: 0.9rem;
}

/* Small icon-style button (Edit) */
.btn--icon {
  background-color: transparent;
  border: 1px solid transparent;
  color: var(--color-text-muted);
  padding: 0.25rem 0.5rem;
  font-size: 0.8rem;
}

.btn--icon:hover,
.btn--icon:focus-visible {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background-color: rgba(108, 99, 255, 0.08);
  outline: none;
}

/* ============================================================
   Bookmarks Widget
   ============================================================ */
.bookmark-input-group {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.4rem 0.6rem;
  align-items: center;
  margin-bottom: 1rem;
}

.bookmark-input-group .btn {
  grid-column: 1 / -1;
  justify-self: start;
  margin-top: 0.75rem;
}

/* Bookmark link — styled as a clickable card/button */
.bookmark-link {
  flex: 1;
  display: flex;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  word-break: break-all;
  transition:
    color 0.2s,
    background-color 0.2s;
}

.bookmark-link:hover,
.bookmark-link:focus-visible {
  color: #fff;
  background-color: rgba(51, 50, 70, 0.18);
  outline: none;
  /* text-decoration: underline; */
}

/* ============================================================
   Shared Form Controls
   ============================================================ */
.text-input {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-text);
  padding: 0.45rem 0.75rem;
  width: 100%;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}

.text-input::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

.text-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.2);
}

.input-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  background-color: var(--color-border);
  border: none;
  border-radius: 6px;
  color: var(--color-text);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.45rem 0.9rem;
  transition:
    background-color 0.2s,
    color 0.2s;
  white-space: nowrap;
}

.btn:hover,
.btn:focus-visible {
  background-color: #3a3f5c;
  outline: none;
}

.btn--primary {
  background-color: var(--color-accent);
  color: #fff;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: #5a52d5;
}

.btn--danger {
  background-color: transparent;
  border: 1px solid transparent;
  color: var(--color-text-muted);
  padding: 0.25rem 0.5rem;
  font-size: 0.8rem;
}

.btn--danger:hover,
.btn--danger:focus-visible {
  color: var(--color-danger);
  border-color: var(--color-danger);
  background-color: rgba(239, 68, 68, 0.08);
}

/* ============================================================
   Item Lists (shared by todos and bookmarks)
   ============================================================ */
.item-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.item-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.6rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.9rem;
}

.bookmark-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.bookmark-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.6rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.9rem;
}

/* ============================================================
   Responsive — single breakpoint at 768px
   ============================================================ */
@media (max-width: 768px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      "clock"
      "timer"
      "todos"
      "bookmarks";
  }
}
