/* ============================================================
   CMAS COATZACOALCOS — IDENTIDAD INSTITUCIONAL
   Departamento de Lectura y Medición
   Sistema de Localización de Líneas de Agua
   ============================================================ */

:root {
  --guinda: #800020;
  --guinda-dark: #5c0017;
  --guinda-light: #a3002e;
  --dorado: #c9a84c;
  --dorado-light: #e0c97a;
  --dorado-dark: #a68a3a;
  --blanco: #ffffff;
  --gris-claro: #f5f5f5;
  --gris: #e5e5e5;
  --gris-medio: #9ca3af;
  --texto: #1f2937;
  --texto-light: #6b7280;
  --azul-mapa: #1a56db;
  --azul-mapa-light: #3b82f6;
  --verde: #059669;
  --rojo: #dc2626;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--gris-claro); color: var(--texto); min-height: 100vh; padding-bottom: calc(70px + var(--safe-bottom)); overflow-x: hidden; }
input, select, textarea, button { font-family: inherit; font-size: 14px; }

/* ============ SPLASH SCREEN ============ */
#splash-screen {
  position: fixed; inset: 0; z-index: 9999;
  background: linear-gradient(160deg, var(--guinda-dark) 0%, var(--guinda) 50%, var(--guinda-light) 100%);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.5s, visibility 0.5s;
}
#splash-screen.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.splash-content { text-align: center; color: var(--blanco); padding: 24px; }
.splash-logo { width: 120px; height: 120px; border-radius: 50%; border: 3px solid var(--dorado); margin: 0 auto 16px; display: block; object-fit: cover; }
.splash-title { font-size: 22px; font-weight: 800; letter-spacing: 0.5px; }
.splash-subtitle { font-size: 13px; color: var(--dorado-light); margin-top: 4px; font-weight: 500; }
.splash-system { font-size: 11px; color: rgba(255,255,255,0.7); margin-top: 8px; letter-spacing: 1.5px; text-transform: uppercase; }
.splash-loader { display: flex; align-items: center; justify-content: center; gap: 10px; margin-top: 28px; font-size: 12px; color: rgba(255,255,255,0.6); }
.splash-spinner { width: 20px; height: 20px; border: 2px solid rgba(255,255,255,0.2); border-top-color: var(--dorado); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ============ HEADER ============ */
.app-header {
  background: linear-gradient(135deg, var(--guinda-dark), var(--guinda));
  color: var(--blanco); padding: calc(var(--safe-top) + 10px) 16px 10px; position: sticky; top: 0; z-index: 100;
  box-shadow: 0 2px 12px rgba(128,0,32,0.3);
}
.app-header h1 { font-size: 16px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.app-header h1 img { width: 32px; height: 32px; border-radius: 50%; border: 1.5px solid var(--dorado); }
.app-header .subtitle { font-size: 10px; color: var(--dorado-light); margin-top: 2px; letter-spacing: 0.5px; }
.header-back { background: none; border: none; color: var(--blanco); font-size: 14px; cursor: pointer; display: flex; align-items: center; gap: 6px; padding: 4px 0; margin-bottom: 2px; }
.header-back span { font-size: 13px; }

/* ============ BOTTOM NAV ============ */
.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
  background: var(--blanco); border-top: 1px solid var(--gris);
  display: flex; justify-content: space-around; align-items: flex-start;
  padding: 6px 4px calc(var(--safe-bottom) + 6px);
  box-shadow: 0 -2px 12px rgba(0,0,0,0.08);
}
.nav-item { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px; background: none; border: none; color: var(--texto-light); font-size: 10px; cursor: pointer; padding: 4px 0; }
.nav-item i { font-size: 18px; }
.nav-item.active { color: var(--guinda); font-weight: 600; }

/* ============ CONTENT ============ */
.content { padding: 12px 14px 20px; max-width: 600px; margin: 0 auto; }

/* ============ INSTITUTIONAL HEADER (Dashboard) ============ */
.inst-header { text-align: center; padding: 18px 16px 14px; }
.inst-header img { width: 72px; height: 72px; border-radius: 50%; border: 2.5px solid var(--dorado); margin-bottom: 8px; }
.inst-header h2 { font-size: 18px; font-weight: 800; color: var(--guinda); }
.inst-header .dept { font-size: 11px; color: var(--dorado-dark); font-weight: 600; }
.inst-header .system-name { font-size: 10px; color: var(--texto-light); letter-spacing: 1px; text-transform: uppercase; margin-top: 2px; }

/* ============ SEARCH BAR ============ */
.search-bar { position: relative; margin-bottom: 14px; }
.search-bar input { width: 100%; padding: 11px 14px 11px 38px; border: 1.5px solid var(--gris); border-radius: 10px; font-size: 14px; background: var(--blanco); transition: border-color 0.2s; }
.search-bar input:focus { outline: none; border-color: var(--guinda); }
.search-bar i { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--gris-medio); }

/* ============ STAT CARDS (Dashboard) ============ */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 16px; }
.stat-card { background: var(--blanco); border-radius: 10px; padding: 10px 8px; text-align: center; border: 1px solid var(--gris); }
.stat-card .stat-value { font-size: 22px; font-weight: 800; color: var(--guinda); }
.stat-card .stat-label { font-size: 9px; color: var(--texto-light); text-transform: uppercase; letter-spacing: 0.3px; margin-top: 2px; }
.stat-card.gold .stat-value { color: var(--dorado-dark); }

/* ============ QUICK ACTIONS ============ */
.quick-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 16px; }
.quick-btn { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 12px 6px; border-radius: 10px; border: none; cursor: pointer; font-size: 10px; font-weight: 600; transition: transform 0.1s; }
.quick-btn:active { transform: scale(0.95); }
.quick-btn i { font-size: 20px; }
.quick-btn.primary { background: linear-gradient(135deg, var(--guinda), var(--guinda-light)); color: var(--blanco); }
.quick-btn.secondary { background: linear-gradient(135deg, var(--dorado-dark), var(--dorado)); color: var(--blanco); }
.quick-btn.outline { background: var(--blanco); color: var(--guinda); border: 1.5px solid var(--guinda); }

/* ============ SECTION TITLE ============ */
.section-title { font-size: 13px; font-weight: 700; color: var(--guinda-dark); margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
.section-title i { color: var(--dorado-dark); }

/* ============ SECTOR GRID (compact) ============ */
.sector-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.sector-card { background: var(--blanco); border-radius: 10px; padding: 10px 12px; border: 1px solid var(--gris); cursor: pointer; transition: box-shadow 0.15s, border-color 0.15s; position: relative; overflow: hidden; }
.sector-card:active { box-shadow: 0 2px 8px rgba(128,0,32,0.15); border-color: var(--guinda); }
.sector-num { font-size: 22px; font-weight: 800; color: var(--guinda); line-height: 1; }
.sector-name { font-size: 10px; color: var(--texto-light); margin-top: 2px; }
.sector-count { font-size: 11px; color: var(--texto); font-weight: 600; margin-top: 4px; }
.sector-meta { font-size: 9px; color: var(--gris-medio); margin-top: 2px; }
.sector-card .badge { position: absolute; top: 8px; right: 8px; background: var(--guinda); color: var(--blanco); font-size: 10px; font-weight: 700; padding: 2px 7px; border-radius: 10px; }

/* ============ LINE CARD ============ */
.line-card { background: var(--blanco); border-radius: 10px; padding: 12px; border: 1px solid var(--gris); margin-bottom: 8px; cursor: pointer; transition: border-color 0.15s; }
.line-card:active { border-color: var(--guinda); }
.card-header { display: flex; justify-content: space-between; align-items: flex-start; }
.card-title { font-size: 14px; font-weight: 700; color: var(--texto); display: flex; align-items: center; gap: 4px; }
.card-sector { font-size: 10px; color: var(--guinda); font-weight: 600; background: rgba(128,0,32,0.08); padding: 2px 8px; border-radius: 6px; }
.card-meta { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.meta-tag { font-size: 10px; padding: 2px 7px; border-radius: 6px; display: inline-flex; align-items: center; gap: 3px; background: rgba(128,0,32,0.06); color: var(--guinda-dark); }
.meta-tag i { font-size: 8px; }

/* ============ BUTTONS ============ */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 12px 16px; border-radius: 10px; font-weight: 600; font-size: 14px; border: none; cursor: pointer; transition: opacity 0.15s, transform 0.1s; }
.btn:active { transform: scale(0.97); }
.btn-primary { background: linear-gradient(135deg, var(--guinda), var(--guinda-light)); color: var(--blanco); width: 100%; }
.btn-secondary { background: linear-gradient(135deg, var(--dorado-dark), var(--dorado)); color: var(--blanco); }
.btn-outline { background: var(--blanco); color: var(--guinda); border: 1.5px solid var(--guinda); }
.btn-existente { background: var(--dorado); color: var(--blanco); }
.btn-danger { background: var(--rojo); color: var(--blanco); }
.btn-sm { padding: 8px 12px; font-size: 12px; }
.btn:disabled { opacity: 0.5; pointer-events: none; }
.btn-group { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }

/* ============ FORM ============ */
.form-section { background: var(--blanco); border-radius: 10px; padding: 14px; margin-bottom: 10px; border: 1px solid var(--gris); }
.form-section-title { font-size: 13px; font-weight: 700; color: var(--guinda); margin-bottom: 10px; display: flex; align-items: center; gap: 6px; }
.form-section-title i { color: var(--dorado-dark); }
.form-group { margin-bottom: 10px; }
.form-group label { display: block; font-size: 12px; font-weight: 600; color: var(--texto-light); margin-bottom: 4px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px 12px; border: 1.5px solid var(--gris); border-radius: 8px; font-size: 14px; background: var(--blanco); transition: border-color 0.2s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--guinda); }
.form-group textarea { resize: vertical; min-height: 60px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.form-mode-banner { padding: 8px 12px; border-radius: 8px; font-size: 12px; display: flex; align-items: center; gap: 6px; margin-bottom: 10px; }
.form-mode-banner.mode-existente { background: rgba(201,168,76,0.12); color: var(--dorado-dark); border: 1px solid rgba(201,168,76,0.3); }

/* ============ LOCATION TABS ============ */
.location-mode-tabs { display: flex; gap: 4px; margin-bottom: 8px; }
.loc-tab { flex: 1; padding: 8px 4px; border: 1.5px solid var(--gris); border-radius: 8px; font-size: 11px; font-weight: 600; background: var(--blanco); color: var(--texto-light); cursor: pointer; text-align: center; display: flex; align-items: center; justify-content: center; gap: 4px; }
.loc-tab.active { background: var(--guinda); color: var(--blanco); border-color: var(--guinda); }

/* ============ MAP ============ */
.map-container { height: calc(100vh - 130px); position: relative; }
.map-back-btn {
  position: absolute; top: 12px; left: 12px; z-index: 1000;
  display: flex; align-items: center; gap: 6px;
  padding: 10px 18px;
  background: var(--guinda); color: var(--blanco);
  border: none; border-radius: 12px;
  font-size: 14px; font-weight: 600;
  cursor: pointer;
  box-shadow: 0 3px 12px rgba(128,0,32,0.45), 0 1px 3px rgba(0,0,0,0.2);
  min-height: 44px; min-width: 44px;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.15s, box-shadow 0.15s;
}
.map-back-btn:active { transform: scale(0.95); box-shadow: 0 1px 6px rgba(128,0,32,0.4); }
.map-back-btn i { font-size: 14px; }
.map-picker-container { height: 200px; border-radius: 8px; overflow: hidden; border: 1px solid var(--gris); }
.map-picker-hint { font-size: 11px; color: var(--texto-light); text-align: center; margin-top: 4px; }
.map-filters { display: flex; gap: 6px; padding: 8px 12px; background: var(--blanco); border-bottom: 1px solid var(--gris); overflow-x: auto; }
.map-filters select { padding: 6px 10px; border: 1.5px solid var(--gris); border-radius: 8px; font-size: 12px; background: var(--blanco); min-width: 100px; }

/* ============ DETAIL VIEW ============ */
.detail-section { background: var(--blanco); border-radius: 10px; padding: 14px; margin-bottom: 10px; border: 1px solid var(--gris); }
.detail-section h3 { font-size: 14px; font-weight: 700; color: var(--guinda); margin-bottom: 10px; display: flex; align-items: center; gap: 6px; }
.detail-section h3 i { color: var(--dorado-dark); }
.detail-row { display: flex; justify-content: space-between; padding: 5px 0; border-bottom: 1px solid rgba(0,0,0,0.04); font-size: 13px; }
.detail-label { color: var(--texto-light); font-weight: 500; }
.detail-value { color: var(--texto); font-weight: 600; text-align: right; max-width: 60%; }

/* ============ PHOTO ============ */
.photo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.photo-item { position: relative; }
.photo-thumb { border-radius: 8px; overflow: hidden; aspect-ratio: 1; cursor: pointer; position: relative; }
.photo-thumb img { width: 100%; height: 100%; object-fit: cover; }
.photo-badge { position: absolute; bottom: 4px; left: 4px; background: rgba(128,0,32,0.85); color: var(--blanco); font-size: 8px; padding: 2px 6px; border-radius: 4px; }
.photo-remove-btn { position: absolute; top: 2px; right: 2px; width: 22px; height: 22px; border-radius: 50%; background: var(--rojo); color: var(--blanco); border: none; font-size: 10px; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.photo-class-select { width: 100%; font-size: 10px; padding: 3px; border: 1px solid var(--gris); border-radius: 4px; margin-top: 3px; }
.photo-actions { display: flex; gap: 8px; margin-top: 8px; }
.photo-fullview {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,0.95);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  -webkit-user-select: none; user-select: none;
}
.photo-fullview-topbar {
  position: absolute; top: 0; left: 0; right: 0; z-index: 1002;
  display: flex; align-items: center; justify-content: space-between;
  padding: calc(env(safe-area-inset-top, 20px) + 10px) 12px 10px;
  background: linear-gradient(to bottom, rgba(0,0,0,0.7) 0%, transparent 100%);
  pointer-events: none;
}
.photo-fullview-topbar > * { pointer-events: auto; }
.photo-fullview .close-btn {
  background: rgba(128,0,32,0.85); border: none; color: white;
  font-size: 16px; font-weight: 600; cursor: pointer;
  min-width: 44px; min-height: 44px; padding: 10px 18px;
  border-radius: 12px; display: flex; align-items: center; gap: 6px;
  box-shadow: 0 3px 12px rgba(0,0,0,0.5);
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.15s, background 0.15s;
}
.photo-fullview .close-btn:active { transform: scale(0.93); background: rgba(128,0,32,1); }
.photo-fullview .photo-classify {
  font-size: 11px; color: rgba(255,255,255,0.8);
  background: rgba(255,255,255,0.12); padding: 6px 12px;
  border-radius: 8px; max-width: 50%; text-align: center;
}
.photo-fullview-img {
  max-width: 95%; max-height: calc(100vh - 120px);
  object-fit: contain; z-index: 1001;
  transition: transform 0.25s ease;
}
.photo-fullview-hint {
  position: absolute; bottom: calc(env(safe-area-inset-bottom, 10px) + 16px);
  left: 0; right: 0; text-align: center; z-index: 1002;
  color: rgba(255,255,255,0.45); font-size: 11px;
  pointer-events: none;
}
.photo-upload-status { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; border-radius: 8px; }
.photo-upload-status.uploading { background: rgba(128,0,32,0.3); color: var(--blanco); font-size: 16px; }
.photo-upload-status.error { background: rgba(220,38,38,0.3); color: var(--blanco); font-size: 16px; cursor: pointer; }

/* ============ CROQUIS ============ */
.croquis-container { border-radius: 8px; overflow: hidden; border: 1px solid var(--gris); }
.croquis-canvas { width: 100%; height: auto; display: block; }
.croquis-fullscreen { position: fixed; inset: 0; z-index: 1000; background: rgba(0,0,0,0.95); display: flex; flex-direction: column; }
.croquis-fs-toolbar {
  display: flex; gap: 8px;
  padding: calc(env(safe-area-inset-top, 20px) + 12px) 12px 12px;
  justify-content: center;
  background: rgba(0,0,0,0.8);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.croquis-fs-toolbar button {
  background: rgba(255,255,255,0.92) !important;
  border: none !important; border-radius: 10px !important;
  padding: 10px 16px !important; font-size: 14px !important;
  font-weight: 600 !important; cursor: pointer !important;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  min-height: 44px; min-width: 44px;
  display: inline-flex !important; align-items: center !important; justify-content: center !important; gap: 6px !important;
}
.croquis-fs-toolbar button:active { opacity: 0.7; }
.croquis-fs-wrapper { flex: 1; display: flex; align-items: center; justify-content: center; overflow: auto; padding: 8px; padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 8px); }

/* ============ FILTER BAR ============ */
.filter-bar { background: var(--blanco); border-radius: 10px; padding: 10px; margin-bottom: 12px; border: 1px solid var(--gris); }
.filter-bar input, .filter-bar select { padding: 8px 10px; border: 1.5px solid var(--gris); border-radius: 8px; font-size: 13px; width: 100%; margin-bottom: 6px; }

/* ============ SEARCH RESULTS ============ */
.search-input-group { display: flex; gap: 6px; }
.search-input-group input { flex: 1; }
.search-results-list { max-height: 150px; overflow-y: auto; }
.search-result-item { padding: 8px 10px; font-size: 12px; border-bottom: 1px solid var(--gris); cursor: pointer; display: flex; align-items: center; gap: 6px; }
.search-result-item:active { background: rgba(128,0,32,0.05); }

/* ============ EXPORT MENU ============ */
.export-menu { background: var(--blanco); border-radius: 10px; padding: 14px; border: 1px solid var(--gris); margin-bottom: 10px; }

/* ============ MODAL ============ */
.modal-overlay { position: fixed; inset: 0; z-index: 500; background: rgba(0,0,0,0.5); display: flex; align-items: flex-end; }
.modal-content { background: var(--blanco); width: 100%; max-height: 70vh; border-radius: 16px 16px 0 0; padding: 20px 16px calc(var(--safe-bottom) + 20px); overflow-y: auto; }
.modal-handle { width: 36px; height: 4px; background: var(--gris); border-radius: 2px; margin: 0 auto 12px; }

/* ============ LOADING ============ */
.loading-center { display: flex; justify-content: center; padding: 40px; }
.spinner { width: 28px; height: 28px; border: 3px solid var(--gris); border-top-color: var(--guinda); border-radius: 50%; animation: spin 0.7s linear infinite; }
.empty-state { text-align: center; padding: 40px 20px; color: var(--gris-medio); }
.empty-state i { font-size: 36px; margin-bottom: 10px; display: block; }
.empty-state p { font-size: 13px; }

/* ============ TOAST ============ */
.toast { position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%); background: var(--guinda); color: var(--blanco); padding: 10px 20px; border-radius: 10px; font-size: 13px; font-weight: 600; z-index: 2000; box-shadow: 0 4px 16px rgba(128,0,32,0.3); animation: fadeUp 0.3s ease-out; }
@keyframes fadeUp { from { opacity: 0; transform: translateX(-50%) translateY(10px); } to { opacity: 1; transform: translateX(-50%) translateY(0); } }

/* ============ LOGIN SCREEN ============ */
.login-screen {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(160deg, var(--guinda-dark) 0%, var(--guinda) 50%, var(--guinda-light) 100%);
  padding: 20px;
}
.login-card {
  background: var(--blanco); border-radius: 20px; padding: 32px 24px;
  width: 100%; max-width: 360px; text-align: center;
  box-shadow: 0 16px 48px rgba(0,0,0,0.3);
}
.login-logo { width: 80px; height: 80px; border-radius: 50%; border: 2.5px solid var(--dorado); margin: 0 auto 12px; display: block; object-fit: cover; }
.login-title { font-size: 20px; font-weight: 800; color: var(--guinda); margin-bottom: 2px; }
.login-dept { font-size: 11px; color: var(--dorado-dark); font-weight: 600; }
.login-system { font-size: 9px; color: var(--texto-light); letter-spacing: 1.2px; text-transform: uppercase; margin-top: 4px; margin-bottom: 20px; }
.login-form { text-align: left; }
.login-form label { display: block; font-size: 12px; font-weight: 600; color: var(--texto-light); margin-bottom: 6px; }
.login-form label i { color: var(--guinda); margin-right: 4px; }
.login-form input {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--gris);
  border-radius: 10px; font-size: 16px; background: var(--gris-claro);
  transition: border-color 0.2s;
}
.login-form input:focus { outline: none; border-color: var(--guinda); background: var(--blanco); }
.login-error { background: rgba(220,38,38,0.08); color: var(--rojo); padding: 8px 12px; border-radius: 8px; font-size: 12px; margin-top: 8px; display: flex; align-items: center; gap: 6px; }
.login-error::before { content: '\\f06a'; font-family: 'Font Awesome 6 Free'; font-weight: 900; font-size: 13px; }

/* ============ RESPONSIVE ============ */
@media (max-width: 360px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .quick-actions { grid-template-columns: repeat(2, 1fr); }
  .sector-grid { grid-template-columns: 1fr; }
}