/* ===== CSS Variables & Theming (shared with portfolio) ===== */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-tertiary: #e8e8ed;
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #86868b;
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --accent-light: rgba(0, 113, 227, 0.08);
  --border: #d2d2d7;
  --card-bg: #ffffff;
  --card-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
  --card-shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.12);
  --nav-bg: rgba(255, 255, 255, 0.85);
  --nav-border: rgba(0, 0, 0, 0.08);
  --tag-bg: #f0f0f5;
  --tag-text: #1d1d1f;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-theme="dark"] {
  --bg-primary: #000000;
  --bg-secondary: #1c1c1e;
  --bg-tertiary: #2c2c2e;
  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-tertiary: #86868b;
  --accent: #2997ff;
  --accent-hover: #40a9ff;
  --accent-light: rgba(41, 151, 255, 0.12);
  --border: #38383a;
  --card-bg: #1c1c1e;
  --card-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
  --card-shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.5);
  --nav-bg: rgba(0, 0, 0, 0.85);
  --nav-border: rgba(255, 255, 255, 0.08);
  --tag-bg: #2c2c2e;
  --tag-text: #f5f5f7;
}

[v-cloak] { display: none; }

#app {
  opacity: 0;
  transition: opacity 0.8s ease;
}
#app.fade-in {
  opacity: 1;
}

#page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f5f3f0;
  z-index: 9999;
  transition: opacity 0.3s ease;
}
#page-loader.hidden {
  opacity: 0;
  pointer-events: none;
}
#page-loader img {
  width: 50px;
  max-width: 50px;
  height: auto;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-hover);
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--nav-border);
  transition: background var(--transition);
}

.nav-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-logo {
  font-weight: 700;
  font-size: 18px;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.nav-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.btn-icon {
  background: none;
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition);
}

.btn-icon:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-light);
}

.portfolio-nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition);
  white-space: nowrap;
}

.portfolio-nav-link:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-light);
}

.portfolio-nav-link i {
  font-size: 12px;
}

/* ===== Personal Header ===== */
.personal-header {
  padding: 120px 0 40px;
  text-align: center;
}

.personal-greeting {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 8px;
}

.personal-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
}

/* ===== Calendar Section ===== */
.calendar-section {
  padding: 20px 0 40px;
}

.calendar-container {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 24px;
}

.calendar-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.calendar-nav h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
  min-width: 200px;
  text-align: center;
}

.calendar-nav-btn {
  background: none;
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
  width: 40px;
  height: 40px;
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all var(--transition);
}

.calendar-nav-btn:hover:not(:disabled) {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-light);
}

.calendar-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ===== Calendar Grid ===== */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.calendar-header-cell {
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 8px 0;
}

.calendar-cell {
  aspect-ratio: 1;
  border-radius: 12px;
  border: 1.5px solid var(--border);
  background: var(--card-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4px;
  position: relative;
  transition: all var(--transition);
  cursor: default;
}

.calendar-cell.empty {
  background: transparent;
  border-color: transparent;
}

.calendar-cell.has-activity {
  cursor: pointer;
  border-color: var(--accent);
  background: var(--accent-light);
}

.calendar-cell.has-activity:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.calendar-cell.is-today {
  border-color: var(--accent);
  border-width: 2.5px;
}

.calendar-cell.is-today .calendar-day-number {
  color: var(--accent);
  font-weight: 800;
}

.calendar-day-number {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
  line-height: 1;
}

.calendar-emojis {
  font-size: 16px;
  line-height: 1;
  display: flex;
  gap: 2px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ===== Tooltip ===== */
.activity-tooltip {
  position: fixed;
  z-index: 2000;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 20px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
  max-width: min(360px, calc(100vw - 16px));
  min-width: min(280px, calc(100vw - 16px));
  max-height: min(400px, calc(100vh - 100px));
  overflow-y: auto;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.activity-tooltip.visible {
  opacity: 1;
  pointer-events: auto;
}

[data-theme="dark"] .activity-tooltip {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.tooltip-activity {
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.tooltip-activity:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.tooltip-sport-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  font-weight: 700;
  font-size: 15px;
}

.tooltip-field {
  margin-bottom: 6px;
}

.tooltip-field:last-child {
  margin-bottom: 0;
}

.tooltip-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 1px;
}

.tooltip-value {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ===== Legend ===== */
.calendar-legend {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 24px;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
}

.legend-emoji {
  font-size: 18px;
}

.legend-item--interactive {
  position: relative;
  cursor: pointer;
}

/* ===== Legend Restring Tooltip ===== */
.legend-restring-tooltip {
  position: fixed;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 16px;
  box-shadow: var(--card-shadow-hover);
  white-space: nowrap;
  z-index: 2000;
  pointer-events: none;
}

.legend-restring-header {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.legend-restring-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 4px;
  font-size: 13px;
}

.legend-restring-row:last-child {
  margin-bottom: 0;
}

.legend-restring-label {
  color: var(--text-secondary);
}

.legend-restring-date {
  font-weight: 600;
  color: var(--accent);
}

/* ===== Personal Footer ===== */
.personal-footer {
  margin-top: 20px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .personal-header {
    padding: 100px 0 30px;
  }

  .calendar-cell {
    border-radius: 8px;
  }

  .calendar-emojis {
    font-size: 14px;
  }

  .calendar-day-number {
    font-size: 11px;
  }

  .activity-tooltip {
    max-width: min(300px, calc(100vw - 16px));
    min-width: min(240px, calc(100vw - 16px));
  }

  .portfolio-nav-link span {
    display: none;
  }
}

@media (max-width: 480px) {
  .calendar-grid {
    gap: 2px;
  }

  .calendar-cell {
    border-radius: 6px;
    padding: 2px;
  }

  .calendar-emojis {
    font-size: 12px;
  }

  .calendar-nav h2 {
    font-size: 18px;
    min-width: 150px;
  }
}