/* ============================================================
   RUOKIAI FAMILY VACATION PLANNER — Design System
   Light bright theme · Frosted-glass surfaces · Warp background
   ============================================================ */

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

/* ── Design tokens ── */
:root {
  /* Text */
  --heading:      #0f172a;
  --text:         #1e293b;
  --muted:        #64748b;

  /* Accent */
  --green:        #059669;
  --green-dim:    rgba(5, 150, 105, 0.12);
  --green-hover:  #047857;

  /* Frosted glass surfaces */
  --card-bg:        rgba(255, 255, 255, 0.68);
  --card-bg-hover:  rgba(255, 255, 255, 0.84);
  --card-border:    rgba(255, 255, 255, 0.90);
  --header-bg:      rgba(255, 255, 255, 0.72);
  --glass-blur:     blur(18px);

  /* Selected state */
  --selected-bg:     rgba(5, 150, 105, 0.12);
  --selected-border: #059669;

  /* Misc */
  --radius:   12px;
  --radius-sm: 8px;
  --shadow:    0 2px 16px rgba(15, 23, 42, 0.10);
  --shadow-lift: 0 8px 32px rgba(15, 23, 42, 0.16);

  /* Italian flag */
  --flag-green: #009246;
  --flag-white: #ffffff;
  --flag-red:   #ce2b37;
}

/* ── Base ── */
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
  background: hsl(210, 40%, 96%); /* fallback if WebGL fails */
}

/* ================================================================
   LAYOUT
   ================================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--header-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--card-border);
  box-shadow: 0 1px 12px rgba(15, 23, 42, 0.08);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.flag-strip {
  display: flex;
  flex-direction: column;
  height: 28px;
  width: 5px;
  border-radius: 3px;
  overflow: hidden;
  flex-shrink: 0;
}
.flag-strip span { flex: 1; }
.flag-strip .fg { background: var(--flag-green); }
.flag-strip .fw { background: var(--flag-white); border-top: 1px solid rgba(0,0,0,0.06); border-bottom: 1px solid rgba(0,0,0,0.06); }
.flag-strip .fr { background: var(--flag-red); }

.site-title {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--heading);
  text-decoration: none;
}
.site-title:hover { opacity: 0.75; }

.header-actions { margin-left: auto; display: flex; gap: 8px; }

.main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px 100px;
}

/* ================================================================
   BUTTONS
   ================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  border: none;
  transition: background 0.15s, transform 0.1s;
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }

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

.btn-ghost {
  background: rgba(255, 255, 255, 0.6);
  color: var(--muted);
  border: 1px solid rgba(15, 23, 42, 0.12);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.9); color: var(--text); }

/* ================================================================
   INDEX PAGE — Vacation grid
   ================================================================ */

.page-hero {
  text-align: center;
  padding: 56px 0 44px;
}
.page-hero h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--heading);
  margin-bottom: 10px;
}
.page-hero p { color: var(--muted); font-size: 1rem; }

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.section-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.vacations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

/* Vacation card */
.vacation-card {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow);
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
}
.vacation-card:hover {
  transform: translateY(-4px);
  background: var(--card-bg-hover);
  box-shadow: var(--shadow-lift);
}

.card-flag { height: 5px; display: flex; }
.card-flag .f1, .card-flag .f2, .card-flag .f3 { flex: 1; }

.card-body {
  padding: 22px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.card-code {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--heading);
  line-height: 1;
}
.card-destination { font-size: 0.9rem; color: var(--muted); }
.card-meta {
  margin-top: auto;
  padding-top: 14px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--muted);
}
.card-meta svg { opacity: 0.5; flex-shrink: 0; }

/* Add-vacation placeholder */
.card-add {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 44px 20px;
  border: 2px dashed rgba(15, 23, 42, 0.18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  color: var(--muted);
  font-family: inherit;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}
.card-add:hover {
  border-color: var(--green);
  background: var(--green-dim);
  color: var(--green);
}
.card-add .plus { font-size: 2rem; font-weight: 200; line-height: 1; }
.card-add span  { font-size: 0.9rem; font-weight: 600; }

/* ================================================================
   TAGS / BADGES
   ================================================================ */

.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.tag-upcoming {
  background: rgba(5, 150, 105, 0.12);
  color: #065f46;
  border: 1px solid rgba(5, 150, 105, 0.25);
}
.tag-past {
  background: rgba(15, 23, 42, 0.06);
  color: var(--muted);
  border: 1px solid rgba(15, 23, 42, 0.10);
}

/* ================================================================
   VACATION PAGE — Hero banner
   ================================================================ */

.vacation-hero {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px 32px;
  margin-bottom: 36px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.vacation-hero-top { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.vacation-code-badge {
  background: var(--green);
  color: #fff;
  padding: 4px 14px;
  border-radius: 6px;
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
}
.vacation-hero h2 { font-size: 1.8rem; font-weight: 800; color: var(--heading); }
.vacation-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.875rem;
  color: var(--muted);
}
.vacation-hero-meta span { display: flex; align-items: center; gap: 6px; }

/* ================================================================
   VACATION PAGE — Day grid
   ================================================================ */

.days-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.days-toolbar .spacer { flex: 1; }
.selected-indicator { font-size: 0.82rem; color: var(--green); font-weight: 600; }

.days-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
  gap: 12px;
}

/* Day card */
.day-card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 16px 14px;
  cursor: pointer;
  user-select: none;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  transition: border-color 0.15s, background 0.15s, transform 0.12s, box-shadow 0.15s;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.day-card:hover {
  border-color: var(--green);
  background: var(--card-bg-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}
.day-card.selected {
  background: var(--selected-bg);
  border-color: var(--selected-border);
}
.day-card.selected::after {
  content: '✓';
  position: absolute;
  top: 10px;
  right: 12px;
  color: var(--green);
  font-size: 0.9rem;
  font-weight: 800;
}

.day-month {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--green);
}
.day-number {
  font-size: 1.9rem;
  font-weight: 800;
  line-height: 1;
  color: var(--heading);
}
.day-weekday { font-size: 0.8rem; color: var(--muted); }
.day-card.weekend .day-weekday { color: #dc2626; }

.day-divider {
  border: none;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
  margin: 6px 0 2px;
}
.day-snippet {
  font-size: 0.75rem;
  color: var(--muted);
  font-style: italic;
  min-height: 14px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.day-snippet.filled { color: var(--text); font-style: normal; }

/* ================================================================
   VACATION PAGE — Detail panel
   ================================================================ */

.detail-panel {
  display: none;
  margin-top: 24px;
  background: var(--card-bg-hover);
  border: 1px solid var(--card-border);
  border-left: 3px solid var(--green);
  border-radius: var(--radius);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-lift);
  padding: 26px;
  animation: panelIn 0.18s ease;
}
.detail-panel.open { display: block; }

@keyframes panelIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}
.detail-title { font-size: 1.15rem; font-weight: 700; color: var(--heading); }
.detail-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  color: var(--muted);
  padding: 2px 6px;
  border-radius: 4px;
  transition: color 0.1s, background 0.1s;
}
.detail-close:hover { color: var(--heading); background: rgba(15,23,42,0.06); }

.detail-fields {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 16px;
}
.field { display: flex; flex-direction: column; gap: 5px; }
.field label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.field-value {
  font-size: 0.88rem;
  color: var(--text);
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  line-height: 1.5;
}

/* App-launch link buttons */
.app-links-row {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.app-links-row label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.app-links { display: flex; flex-wrap: wrap; gap: 8px; }
.app-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(15, 23, 42, 0.12);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
}
.app-btn:hover {
  background: #fff;
  box-shadow: 0 2px 8px rgba(15,23,42,0.12);
  transform: translateY(-1px);
}
.app-btn:active { transform: scale(0.97); }

/* ================================================================
   DETAIL PANEL — Media / attachments section
   ================================================================ */

.detail-media {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
}

.media-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.media-header .section-label {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-add-media {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  background: var(--green);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}
.btn-add-media:hover  { background: var(--green-hover); }
.btn-add-media:active { transform: scale(0.97); }

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 10px;
}

.media-card {
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(15, 23, 42, 0.10);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 1px 6px rgba(15, 23, 42, 0.08);
  transition: transform 0.15s, box-shadow 0.15s;
}
.media-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.13);
}

/* Image thumbnail */
.media-thumb {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  cursor: pointer;
  display: block;
}

/* Non-image file icon */
.media-icon {
  width: 100%;
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: rgba(5, 150, 105, 0.08);
  cursor: pointer;
  font-size: 2rem;
}
.media-ext {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--green);
  background: rgba(5, 150, 105, 0.12);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Card footer: name + delete */
.media-card-footer {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 8px;
  background: rgba(255, 255, 255, 0.9);
  border-top: 1px solid rgba(15, 23, 42, 0.06);
}
.media-name {
  flex: 1;
  font-size: 0.68rem;
  color: var(--text);
  font-weight: 500;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.media-delete {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 2px;
  border-radius: 3px;
  transition: color 0.1s, background 0.1s;
}
.media-delete:hover { color: #dc2626; background: rgba(220, 38, 38, 0.08); }

/* Empty / loading states */
.media-empty {
  font-size: 0.82rem;
  color: var(--muted);
  font-style: italic;
  padding: 6px 0;
}
.media-saving {
  font-size: 0.82rem;
  color: var(--green);
  font-style: italic;
  padding: 6px 0;
}

/* ================================================================
   BACK LINK
   ================================================================ */

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  transition: color 0.15s;
}
.back-link:hover { color: var(--heading); }

/* ================================================================
   RESPONSIVE — mobile first
   ================================================================ */

@media (max-width: 600px) {
  .header-inner     { padding: 0 16px; }
  .site-title       { font-size: 0.95rem; }
  .main             { padding: 24px 16px 80px; }
  .page-hero        { padding: 36px 0 28px; }
  .page-hero h2     { font-size: 1.5rem; }
  .vacation-hero    { padding: 24px 18px; }
  .vacation-hero h2 { font-size: 1.3rem; }
  .days-grid        { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
  .detail-panel     { padding: 18px 16px; }
  .detail-fields    { grid-template-columns: 1fr; }
}

@media (max-width: 380px) {
  .days-grid { grid-template-columns: repeat(2, 1fr); }
}