/* ==== Custom Properties (Neobrutalism + mobile-first) ==== */
:root {
  --color-primary: #FDC800;
  --color-secondary: #432DD7;
  --color-success: #16A34A;
  --color-warning: #D97706;
  --color-danger: #DC2626;
  --color-surface: #FBFBF9;
  --color-text: #1C293C;
  --color-text-muted: rgba(28, 41, 60, 0.6);
  --color-border: rgba(28, 41, 60, 0.15);

  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --fs-caption: 0.75rem;
  --fs-small: 0.875rem;
  --fs-body: 1rem;
  --fs-h3: 1.25rem;
  --fs-h2: 1.5rem;
  --fs-h1: 2rem;

  --fw-read: 400;
  --fw-emphasize: 500;
  --fw-announce: 700;

  --space-2: 0.125rem;
  --space-4: 0.25rem;
  --space-8: 0.5rem;
  --space-12: 0.75rem;
  --space-16: 1rem;
  --space-24: 1.5rem;
  --space-32: 2rem;

  --border-width: 2.5px;
  --border-bold: 3px;
  --radius: 0;
  --shadow: 3px 3px 0 var(--color-text);

  --cell-min: 2.5rem;
  --cell-max: 3.5rem;

  --duration-instant: 80ms;
  --duration-confirm: 150ms;
  --duration-modal: 200ms;
  --ease: cubic-bezier(0.2, 0, 0, 1);
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-instant: 0ms;
    --duration-confirm: 0ms;
    --duration-modal: 0ms;
  }
}

@media (max-width: 400px) {
  :root {
    --fs-h2: 1.25rem;
    --fs-h1: 1.5rem;
    --cell-min: 2.25rem;
    --cell-max: 2.75rem;
  }
}

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

body {
  font-family: var(--font);
  background: var(--color-surface);
  color: var(--color-text);
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  padding: var(--space-16);
  -webkit-font-smoothing: antialiased;
}

.app {
  width: 100%;
  max-width: 30rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ==== Header & Navigation ==== */
.header {
  text-align: center;
  margin-bottom: var(--space-24);
  width: 100%;
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-12);
  margin-bottom: var(--space-8);
}

.title {
  font-size: var(--fs-h1);
  font-weight: var(--fw-announce);
  letter-spacing: -0.015em;
  line-height: 1.2;
  min-width: 10rem;
  text-align: center;
}

.nav-btn {
  width: 2.5rem;
  height: 2.5rem;
  border: var(--border-width) solid var(--color-text);
  background: var(--color-surface);
  font-size: 1.5rem;
  font-weight: var(--fw-announce);
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: box-shadow var(--duration-instant) var(--ease);
  color: var(--color-text);
}

.nav-btn:hover {
  box-shadow: 2px 2px 0 var(--color-text);
}

.nav-btn:focus-visible {
  outline: var(--border-bold) solid var(--color-text);
  outline-offset: 2px;
}

.btn-today {
  font-family: inherit;
  font-size: var(--fs-small);
  font-weight: var(--fw-emphasize);
  letter-spacing: 0.02em;
  background: transparent;
  border: 2px solid var(--color-text);
  color: var(--color-text);
  padding: var(--space-4) var(--space-12);
  cursor: pointer;
  margin-bottom: var(--space-8);
  transition: background var(--duration-instant) var(--ease), box-shadow var(--duration-instant) var(--ease);
}

.btn-today:hover {
  background: var(--color-primary);
  box-shadow: 2px 2px 0 var(--color-text);
}

.subtitle {
  font-size: var(--fs-small);
  font-weight: var(--fw-read);
  letter-spacing: 0.01em;
  color: var(--color-text-muted);
  margin-top: var(--space-4);
}

/* ==== Calendar Card ==== */
.calendar-card {
  width: 100%;
  border: var(--border-bold) solid var(--color-text);
  background: var(--color-surface);
  box-shadow: var(--shadow);
  padding: var(--space-12) var(--space-8);
}

.day-names {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-8);
  text-align: center;
}

.day-names span {
  font-size: var(--fs-caption);
  font-weight: var(--fw-emphasize);
  letter-spacing: 0.06em;
  color: var(--color-text);
  padding: var(--space-4) 0;
  user-select: none;
}

.grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--space-4);
}

/* Day cell */
.day-cell {
  aspect-ratio: 1;
  width: 100%;
  min-width: var(--cell-min);
  max-width: var(--cell-max);
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--fs-small);
  font-weight: var(--fw-read);
  letter-spacing: 0;
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    border-color var(--duration-instant) var(--ease),
    background-color var(--duration-confirm) var(--ease),
    box-shadow var(--duration-instant) var(--ease);
  outline-offset: 2px;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.day-cell:not(.is-disabled):not(.is-future):hover {
  border-color: var(--color-text);
  box-shadow: 0 0 0 1px var(--color-text);
}

.day-cell:focus-visible {
  outline: var(--border-bold) solid var(--color-text);
  z-index: 2;
}

.day-cell:not(.is-disabled):not(.is-future):active {
  transform: scale(0.95);
  transition: transform var(--duration-instant) var(--ease);
}

/* Hari ini — highlight khusus */
.day-cell.is-today {
  border: var(--border-bold) solid var(--color-text);
  box-shadow: inset 0 0 0 1px var(--color-text);
}

.day-cell.is-today:not(.is-disabled):not(.is-future):hover {
  box-shadow:
    inset 0 0 0 1px var(--color-text),
    0 0 0 1px var(--color-text);
}

/* Tanggal luar bulan */
.day-cell.is-disabled {
  opacity: 0.25;
  cursor: not-allowed;
  pointer-events: none;
}

/* Tanggal di masa depan — tidak bisa diklik */
.day-cell.is-future {
  opacity: 0.3;
  cursor: not-allowed;
  pointer-events: none;
  border-color: var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
}

/* Mood terisi */
.day-cell[data-mood] {
  border-color: var(--color-text);
  border-width: var(--border-bold);
  font-weight: var(--fw-emphasize);
  box-shadow: 1.5px 1.5px 0 var(--color-text);
}

/* Legend */
.legend {
  width: 100%;
  margin-top: var(--space-24);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-8) var(--space-12);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--fs-caption);
  font-weight: var(--fw-emphasize);
  letter-spacing: 0.02em;
}

.legend-swatch {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  border: 1.5px solid var(--color-text);
  flex-shrink: 0;
}

.legend-swatch svg {
  display: block;
  width: 100%;
  height: 100%;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(28, 41, 60, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-16);
  opacity: 0;
  transition: opacity var(--duration-modal) var(--ease);
  pointer-events: none;
}

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

.modal {
  background: var(--color-surface);
  border: var(--border-bold) solid var(--color-text);
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 20rem;
  padding: var(--space-16);
  transform: scale(0.95);
  transition: transform var(--duration-modal) var(--ease);
}

.modal-overlay.is-open .modal {
  transform: scale(1);
}

@media (prefers-reduced-motion: reduce) {
  .modal { transform: none; }
  .modal-overlay.is-open .modal { transform: none; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-12);
}

.modal-title {
  font-size: var(--fs-h3);
  font-weight: var(--fw-announce);
  letter-spacing: -0.01em;
}

.modal-close {
  width: 2rem;
  height: 2rem;
  border: 2px solid var(--color-text);
  background: var(--color-surface);
  font-size: 1.25rem;
  font-weight: var(--fw-announce);
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: box-shadow var(--duration-instant) var(--ease);
}

.modal-close:focus-visible { outline: var(--border-bold) solid var(--color-text); outline-offset: 2px; }
.modal-close:hover { box-shadow: 2px 2px 0 var(--color-text); }

.mood-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.mood-btn {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  width: 100%;
  padding: var(--space-12);
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--fs-body);
  font-weight: var(--fw-emphasize);
  letter-spacing: 0.02em;
  color: var(--color-text);
  transition:
    border-color var(--duration-instant) var(--ease),
    box-shadow var(--duration-instant) var(--ease);
  outline-offset: 2px;
}

.mood-btn:hover {
  border-color: var(--color-text);
  box-shadow: 2px 2px 0 var(--color-text);
}

.mood-btn:focus-visible { outline: var(--border-bold) solid var(--color-text); z-index: 2; }

.mood-btn.is-selected {
  border-color: var(--color-text);
  border-width: 3px;
  box-shadow: inset 0 0 0 1px var(--color-text);
}

.mood-swatch {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  border: 2px solid var(--color-text);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mood-swatch svg { width: 1.25rem; height: 1.25rem; }
.mood-label { flex: 1; text-align: left; }

.modal-footer { margin-top: var(--space-12); text-align: center; }

.btn-clear {
  font-family: inherit;
  font-size: var(--fs-small);
  font-weight: var(--fw-emphasize);
  letter-spacing: 0.02em;
  color: var(--color-danger);
  background: transparent;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  padding: var(--space-4) var(--space-8);
  transition: opacity var(--duration-instant) var(--ease);
}

.btn-clear:hover { opacity: 0.8; }

@media (max-width: 400px) {
  .calendar-card { padding: var(--space-8) var(--space-4); }
  .modal { max-width: 100%; padding: var(--space-12); }
  .mood-btn { padding: var(--space-8) var(--space-12); }
}