@font-face {
  font-family: "Space Grotesk";
  src: url("assets/fonts/SpaceGrotesk-VariableFont_wght.ttf") format("truetype");
  font-weight: 100 1000;
  font-style: normal;
}

:root {
  --bg: #f4f4f2;
  --paper: #ffffff;
  --ink: #0a0a0a;
  --ink-soft: #666666;
  --line: #d6d6d6;
  --line-strong: #111111;
  --shadow: none;

  --mood-good: #40d27d;
  --mood-neutral: #f4c44f;
  --mood-bad: #ff6464;
  --date-selected: #111111;

  --radius-lg: 0;
  --radius-md: 0;
  --radius-sm: 0;
}

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

body {
  font-family: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px 14px;
  color: var(--ink);
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.88),
      rgba(244, 244, 242, 0.96)
    ),
    repeating-linear-gradient(
      0deg,
      rgba(0, 0, 0, 0.04) 0,
      rgba(0, 0, 0, 0.04) 1px,
      transparent 1px,
      transparent 48px
    ),
    repeating-linear-gradient(
      90deg,
      rgba(0, 0, 0, 0.03) 0,
      rgba(0, 0, 0, 0.03) 1px,
      transparent 1px,
      transparent 48px
    );
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 460px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  align-items: center;
  animation: rise-in 0.5s ease-out;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

header h1 {
  font-size: clamp(2rem, 4.8vw, 2.45rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.05;
  text-align: center;
}

.date-main,
.date-year {
  display: inline-block;
}

.date-year {
  margin-left: 0.4em;
  color: var(--ink-soft);
  font-weight: 500;
}

.mood-selector {
  width: 100%;
}

.mood-buttons-container {
  display: flex;
  width: 100%;
  gap: 8px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.mood-btn {
  flex: 1;
  border: 1px solid rgba(0, 0, 0, 0.22);
  border-radius: var(--radius-md);
  height: 48px;
  cursor: pointer;
  transition:
    transform 0.12s ease,
    filter 0.18s ease,
    box-shadow 0.2s ease;
}

.mood-btn:hover {
  filter: saturate(1.05) brightness(1.03);
}

.mood-btn:active {
  transform: scale(0.97);
}

.mood-btn.active {
  border: 2px solid var(--line-strong);
}

.mood-btn:focus,
.mood-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.14);
}

.calendar-card {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.calendar-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: center;
  margin-bottom: 20px;
}

.calendar-controls {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.custom-select,
.today-btn {
  border: 1px solid var(--line-strong);
  background: #ffffff;
  color: var(--ink);
  font-family: inherit;
  font-size: 0.86rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  height: 34px;
  padding: 0 12px;
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease;
}

.custom-select:hover,
.today-btn:hover {
  background: #f1f1f1;
  border-color: var(--line-strong);
}

.custom-select:focus,
.custom-select:focus-visible,
.today-btn:focus,
.today-btn:focus-visible {
  outline: none;
  border-color: var(--line-strong);
}

.nav-btn {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  background: #ffffff;
  color: var(--ink-soft);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    color 0.2s ease;
}

.nav-btn:hover {
  background: #111111;
  color: #ffffff;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
  text-align: center;
}

.weekday {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  padding-bottom: 10px;
}

.days-container {
  display: contents;
}

.day {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 0.92rem;
  font-weight: 600;
  color: #5f5f5f;
  border: 1px solid #d8d8d8;
  cursor: pointer;
  transition:
    background-color 0.18s ease,
    color 0.18s ease,
    border-color 0.18s ease,
    transform 0.12s ease;
}

.day:hover:not(.outside-month) {
  border-color: #111111;
  color: var(--ink);
}

.day.today {
  border: 1px solid var(--line-strong);
  color: var(--ink);
}

.day.selected:not(.has-mood) {
  background: var(--date-selected) !important;
  border-color: var(--date-selected);
  color: #ffffff !important;
}

.day.selected.has-mood {
  border: 1px solid rgba(0, 0, 0, 1);
}

.day.outside-month {
  opacity: 0.18;
  cursor: default;
}

.settings-field {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.settings-label {
  color: var(--ink);
  font-weight: 600;
  font-size: 0.92rem;
}

.settings-slider {
  width: 100%;
  cursor: pointer;
  accent-color: #111111;
}

.settings-slider::-webkit-slider-runnable-track {
  background: #d4d4d4;
  border-radius: 999px;
  height: 4px;
}

.settings-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  margin-top: -6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 0;
  background: #111111;
}

.settings-slider::-moz-range-track {
  background: #d4d4d4;
  border-radius: 999px;
  height: 4px;
}

.settings-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 0;
  background: #111111;
}

.settings-tick-labels {
  display: flex;
  justify-content: space-between;
  color: var(--ink-soft);
  font-size: 0.78rem;
  padding: 0 8px;
}

.settings-help {
  color: var(--ink-soft);
  font-size: 0.86rem;
  line-height: 1.5;
  padding-bottom: 1rem;
}

.settings-actions {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.settings-export-btn,
.settings-import-btn,
.settings-delete-btn {
  width: 100%;
  border-radius: var(--radius-md);
  height: 42px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition:
    transform 0.12s ease,
    opacity 0.2s ease,
    background-color 0.2s ease;
}

.settings-export-btn,
.settings-delete-btn {
  border: 1px solid #111111;
  background: #111111;
  color: #ffffff;
}

.settings-import-btn {
  border: 1px solid var(--line-strong);
  background: #ffffff;
  color: var(--ink);
}

.settings-delete-btn {
  border-color: #7a1010;
  background: #7a1010;
}

.app-footer {
  display: flex;
  gap: 20px;
}

.footer-link {
  font-size: 0.82rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #666666;
  text-decoration: none;
  position: relative;
}

.footer-link:hover {
  color: #111111;
}

.footer-link:hover::after {
  transform: scaleX(1);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.28);
  backdrop-filter: none;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: 100;
}

.modal-backdrop.active {
  visibility: visible;
  opacity: 1;
}

.modal-panel {
  width: 100%;
  max-width: 410px;
  background: #ffffff;
  border: 1px solid #111111;
  border-radius: var(--radius-lg);
  padding: 24px;
  transform: translateY(12px);
  transition: transform 0.2s ease;
}

.modal-backdrop.active .modal-panel {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.modal-header h2 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.modal-close {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  background: #ffffff;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    color 0.2s ease;
}

.modal-close:hover {
  background: #111111;
  color: #ffffff;
}

.modal-body {
  color: var(--ink-soft);
  line-height: 1.6;
  font-size: 0.95rem;
}

@media (max-width: 480px) {
  body {
    align-items: flex-start;
    padding: 14px 10px 24px;
  }

  .container {
    gap: 18px;
  }

  .calendar-card {
    padding: 18px;
  }

  .calendar-header {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .calendar-controls {
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-btn {
    display: none;
  }

  .day {
    font-size: 0.84rem;
  }
}