/* SECTION: Design Tokens */
:root {
    /* Colors - warm retro-inspired palette */
    --color-bg: #f6f1e8;
    --color-bg-elevated: #fff9f0;
    --color-bg-soft: #f0e2cf;
    --color-border-subtle: rgba(70, 52, 35, 0.16);
    --color-border-strong: rgba(70, 52, 35, 0.4);
    --color-text-main: #2f251a;
    --color-text-muted: rgba(47, 37, 26, 0.75);
    --color-text-soft: rgba(47, 37, 26, 0.55);
  
    --color-accent: #d26b35;
    --color-accent-soft: rgba(210, 107, 53, 0.1);
    --color-accent-strong: #b14412;
    --color-accent-alt: #5a7d4a;
  
    --color-mood-happy: #f4c34f;
    --color-mood-calm: #7cb5b0;
    --color-mood-excited: #f47d4f;
    --color-mood-thoughtful: #c29bc7;
    --color-mood-sad: #6f85b8;
    --color-mood-tired: #b9b9b9;
    --color-mood-anxious: #e27a9b;
  
    /* Shadows & radii */
    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-sm: 8px;
  
    --shadow-soft: 0 14px 40px rgba(43, 25, 8, 0.12);
    --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.06);
  
    /* Typography */
    --font-display: "Lora", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-body: "Work Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  
    --size-xs: 0.75rem;
    --size-sm: 0.875rem;
    --size-md: 1rem;
    --size-lg: 1.25rem;
    --size-xl: 1.5rem;
    --size-2xl: 2rem;
  
    /* Layout */
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
  
    /* Transitions */
    --transition-fast: 0.16s ease;
    --transition-med: 0.22s ease;
  }
  
  /* SECTION: Global Layout */
  * {
    box-sizing: border-box;
  }
  
  html,
  body {
    margin: 0;
    padding: 0;
  }
  
  body {
    min-height: 100vh;
    font-family: var(--font-body);
    color: var(--color-text-main);
    background: radial-gradient(circle at top left, #fdf5ea 0, var(--color-bg) 46%, #eed7bc 100%);
    -webkit-font-smoothing: antialiased;
  }
  
  .app-shell {
    max-width: 1120px;
    margin: 1.5rem auto 2rem;
    padding: 0 var(--space-4);
  }
  
  /* SECTION: Header */
  .app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    margin-bottom: var(--space-6);
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(210, 107, 53, 0.1), rgba(122, 98, 73, 0.08));
    border: 1px solid rgba(210, 107, 53, 0.22);
    box-shadow: var(--shadow-soft);
  }
  
  .brand {
    display: flex;
    align-items: center;
    gap: var(--space-4);
  }
  
  .brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at 30% 20%, #ffe9b8, #d26b35);
    color: #3c2312;
    font-size: 1.4rem;
    transform: rotate(-10deg);
    box-shadow: 0 10px 25px rgba(95, 51, 21, 0.35);
  }
  
  .app-title {
    margin: 0;
    font-family: var(--font-display);
    font-size: var(--size-2xl);
    letter-spacing: -0.03em;
  }
  
  .app-subtitle {
    margin: 0.2rem 0 0;
    font-size: var(--size-sm);
    color: var(--color-text-soft);
  }
  
  .header-meta {
    text-align: right;
    font-size: var(--size-xs);
    color: var(--color-text-soft);
  }
  
  .today-display {
    display: inline-flex;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: rgba(255, 244, 229, 0.9);
    border: 1px solid rgba(210, 107, 53, 0.25);
  }
  
  /* SECTION: Main Layout */
  .app-main {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    grid-template-rows: auto auto;
    gap: var(--space-5);
  }
  
  .panel {
    background: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-subtle);
    padding: var(--space-5);
  }
  
  .panel-form {
    grid-column: 1 / 2;
    grid-row: 1 / 2;
  }
  
  .panel-list {
    grid-column: 2 / 3;
    grid-row: 1 / 3;
  }
  
  .panel-detail {
    grid-column: 1 / 2;
    grid-row: 2 / 3;
  }
  
  .panel-header {
    margin-bottom: var(--space-4);
  }
  
  .panel-header h2 {
    margin: 0 0 0.4rem;
    font-family: var(--font-display);
    font-size: var(--size-xl);
    letter-spacing: -0.02em;
  }
  
  .panel-description {
    margin: 0;
    font-size: var(--size-sm);
    color: var(--color-text-muted);
  }
  
  /* SECTION: Form Styles */
  .entry-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .field-row {
    display: flex;
    gap: var(--space-4);
  }
  
  .field {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
  }
  
  label {
    font-size: var(--size-xs);
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-soft);
  }
  
  input[type="text"],
  input[type="date"],
  select,
  textarea {
    font-family: var(--font-body);
    font-size: var(--size-sm);
    padding: 0.6rem 0.8rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-subtle);
    background: #fffdf7;
    color: var(--color-text-main);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast),
      background-color var(--transition-fast), transform var(--transition-fast);
  }
  
  input::placeholder,
  textarea::placeholder {
    color: var(--color-text-soft);
  }
  
  input:focus,
  select:focus,
  textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 1px rgba(210, 107, 53, 0.4);
    background: #fffef9;
    transform: translateY(-1px);
  }
  
  textarea {
    resize: vertical;
    min-height: 120px;
  }
  
  .form-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    margin-top: var(--space-2);
  }
  
  /* Buttons */
  .btn {
    border-radius: 999px;
    border: 1px solid transparent;
    padding: 0.55rem 1.25rem;
    font-size: var(--size-sm);
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    transition: background-color var(--transition-fast), color var(--transition-fast),
      border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  }
  
  .btn-primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-strong));
    color: #fff9f4;
    box-shadow: 0 10px 28px rgba(210, 107, 53, 0.55);
  }
  
  .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 32px rgba(210, 107, 53, 0.7);
  }
  
  .btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 4px 12px rgba(210, 107, 53, 0.55);
  }
  
  .btn-ghost {
    background: transparent;
    color: var(--color-text-soft);
    border-color: rgba(47, 37, 26, 0.15);
  }
  
  .btn-ghost:hover {
    background: rgba(255, 255, 255, 0.8);
    color: var(--color-text-main);
  }
  
  /* SECTION: Filters */
  .filters {
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin-bottom: var(--space-4);
    background: var(--color-bg-soft);
    border: 1px dashed rgba(70, 52, 35, 0.25);
  }
  
  .search-input-wrap {
    position: relative;
  }
  
  .search-input-wrap input {
    width: 100%;
    padding-right: 2rem;
  }
  
  .search-icon {
    position: absolute;
    right: 0.65rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    color: var(--color-text-soft);
  }
  
  /* SECTION: Entry List */
  .entry-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 460px;
    overflow-y: auto;
  }
  
  .entry-list-empty {
    font-size: var(--size-sm);
    color: var(--color-text-soft);
    padding: 0.5rem 0;
  }
  
  .entry-item {
    border-radius: var(--radius-md);
    padding: 0.65rem 0.75rem;
    cursor: pointer;
    border: 1px solid transparent;
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    column-gap: 0.6rem;
    row-gap: 0.15rem;
    align-items: center;
    background: rgba(255, 255, 255, 0.85);
    transition: border-color var(--transition-fast), background-color var(--transition-fast),
      box-shadow var(--transition-fast), transform var(--transition-fast);
  }
  
  .entry-item:hover {
    background: #ffffff;
    border-color: var(--color-border-subtle);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.06);
    transform: translateY(-1px);
  }
  
  .entry-item.active {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 1px rgba(210, 107, 53, 0.35);
  }
  
  .entry-mood-pill {
    grid-row: span 2;
    align-self: stretch;
    min-width: 6px;
    border-radius: 999px;
    background: var(--color-accent-soft);
  }
  
  .entry-mood-pill[data-mood="happy"] {
    background: linear-gradient(180deg, var(--color-mood-happy), #f7df88);
  }
  
  .entry-mood-pill[data-mood="calm"] {
    background: linear-gradient(180deg, var(--color-mood-calm), #a8d7d2);
  }
  
  .entry-mood-pill[data-mood="excited"] {
    background: linear-gradient(180deg, var(--color-mood-excited), #f8a584);
  }
  
  .entry-mood-pill[data-mood="thoughtful"] {
    background: linear-gradient(180deg, var(--color-mood-thoughtful), #d4b8dd);
  }
  
  .entry-mood-pill[data-mood="sad"] {
    background: linear-gradient(180deg, var(--color-mood-sad), #9aa9d3);
  }
  
  .entry-mood-pill[data-mood="tired"] {
    background: linear-gradient(180deg, var(--color-mood-tired), #d3d3d3);
  }
  
  .entry-mood-pill[data-mood="anxious"] {
    background: linear-gradient(180deg, var(--color-mood-anxious), #f0a7bd);
  }
  
  .entry-heading {
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
    align-items: center;
  }
  
  .entry-title {
    margin: 0;
    font-size: var(--size-sm);
    font-weight: 600;
    color: var(--color-text-main);
  }
  
  .entry-date {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-soft);
  }
  
  .entry-preview {
    margin: 0;
    font-size: var(--size-xs);
    color: var(--color-text-soft);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  
  /* SECTION: Detail View */
  .detail-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-4);
  }
  
  .detail-meta {
    text-align: right;
    font-size: var(--size-xs);
    color: var(--color-text-soft);
  }
  
  .detail-view {
    border-radius: var(--radius-md);
    border: 1px dashed rgba(47, 37, 26, 0.22);
    padding: var(--space-4);
    background: rgba(255, 255, 255, 0.9);
    min-height: 180px;
  }
  
  .detail-title {
    margin: 0 0 0.4rem;
    font-family: var(--font-display);
    font-size: var(--size-lg);
  }
  
  .detail-mood-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    font-size: var(--size-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border: 1px solid rgba(47, 37, 26, 0.12);
  }
  
  .detail-mood-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
  }
  
  .detail-body {
    margin-top: var(--space-3);
    font-size: var(--size-md);
    line-height: 1.7;
    color: var(--color-text-main);
    white-space: pre-wrap;
  }
  
  .detail-placeholder {
    margin: 0 0 0.4rem;
    font-size: var(--size-md);
    color: var(--color-text-muted);
  }
  
  .detail-placeholder-text {
    margin: 0;
    font-size: var(--size-sm);
    color: var(--color-text-soft);
  }
  
  /* SECTION: Footer */
  .app-footer {
    margin-top: var(--space-6);
    text-align: center;
    font-size: var(--size-xs);
    color: var(--color-text-soft);
  }
  
  /* SECTION: Responsive */
  @media (max-width: 900px) {
    .app-main {
      display: flex;
      flex-direction: column;
    }
  
    .panel-form,
    .panel-list,
    .panel-detail {
      grid-column: auto;
      grid-row: auto;
    }
  
    .app-header {
      flex-direction: column;
      align-items: flex-start;
    }
  
    .header-meta {
      text-align: left;
    }
  }
  
  @media (max-width: 640px) {
    .app-shell {
      margin-top: 1rem;
      padding: 0 var(--space-3);
    }
  
    .panel {
      padding: var(--space-4);
    }
  
    .field-row {
      flex-direction: column;
    }
  
    .entry-list {
      max-height: 320px;
    }
  }