/* =========================================================
   style.css - Main Stylesheet
   Weather Station Dashboard — Mobile-first responsive
   ======================================================== */

/* --- Reset & Base --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;
  background:var(--bg-primary);color:var(--text-primary);line-height:1.6;
  transition:var(--transition-theme);overflow-x:hidden;min-height:100vh;
}
a{color:var(--accent);text-decoration:none;transition:color .2s}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.hidden{display:none!important}

/* --- Container --- */
.container{max-width:1280px;margin:0 auto;padding:0 1rem}

/* --- Navbar --- */
.navbar{
  position:sticky;top:0;z-index:1000;
  background:var(--bg-nav);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);transition:var(--transition-theme);
}
.nav-container{
  display:flex;align-items:center;justify-content:space-between;
  padding:.75rem 1rem;max-width:1280px;margin:0 auto;
}
.nav-brand{display:flex;align-items:center;gap:.5rem;font-size:1.25rem;font-weight:700;color:var(--text-primary);text-decoration:none}
.nav-brand:hover{text-decoration:none;color:var(--accent)}
.nav-icon{font-size:1.5rem}
.nav-title{white-space:nowrap}
.nav-links{display:none;gap:.25rem;align-items:center}
.nav-link{
  padding:.5rem .75rem;border-radius:.5rem;font-size:.875rem;font-weight:500;
  color:var(--text-secondary);transition:background .2s,color .2s;
}
.nav-link:hover,.nav-link.active{background:var(--accent-light);color:var(--accent);text-decoration:none}
.nav-actions{display:flex;gap:.25rem;align-items:center}
.btn-icon{
  background:var(--bg-card);border:1px solid var(--border);border-radius:.5rem;
  padding:.4rem .6rem;cursor:pointer;font-size:1rem;line-height:1;
  color:var(--text-secondary);transition:var(--transition-theme);
}
.btn-icon:hover{background:var(--accent-light);color:var(--accent)}
.nav-hamburger{display:flex}

/* Mobile nav open */
.nav-links.open{
  display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;
  background:var(--bg-nav);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  border-bottom:1px solid var(--border);padding:.5rem;box-shadow:var(--shadow-md);
}

/* --- Main Content --- */
.main-content{min-height:calc(100vh - 140px)}
.page{padding:0}

/* --- Loading --- */
.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:300px;gap:1rem;color:var(--text-muted)}
.loading-spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* --- Hero Section --- */
.hero{
  background:var(--bg-hero);padding:2rem 1rem;text-align:center;
  color:#fff;position:relative;overflow:hidden;
}
.hero-content{max-width:600px;margin:0 auto}
.hero-main{margin-bottom:.75rem}
.hero-temp{font-size:clamp(3rem,10vw,6rem);font-weight:800;line-height:1.1;letter-spacing:-.02em}
.hero-feels{font-size:1.1rem;opacity:.9;margin-top:.25rem}
.hero-details{margin-top:.75rem}
.hero-trend{font-size:.9rem;margin-bottom:.5rem}
.hero-minmax{display:flex;justify-content:center;gap:1.5rem;font-size:1rem;font-weight:600}
.hero-min{opacity:.85}
.hero-max{opacity:.85}
.hero-description{font-size:1.1rem;opacity:.85;margin-top:.5rem}
.hero-location{font-size:.8rem;opacity:.7;margin-top:.5rem}
.trend-up{color:#fee2e2}
.trend-down{color:#dbeafe}
.trend-stable{color:#e2e8f0}

/* --- Cards (Glassmorphism) --- */
.card{
  background:var(--bg-card);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  border:1px solid var(--border);border-radius:1rem;padding:1.25rem;
  box-shadow:var(--shadow-md);transition:var(--transition-theme),transform .2s;
}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.card-title{
  font-size:.875rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;
  letter-spacing:.04em;margin-bottom:.75rem;display:flex;align-items:center;gap:.5rem;
}

/* --- Sensor Cards Grid --- */
.sensor-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;
  padding:1.5rem 1rem;max-width:1280px;margin:0 auto;
}
.sensor-card{
  background:var(--bg-card);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  border:1px solid var(--border);border-radius:1rem;padding:1rem;
  box-shadow:var(--shadow-md);transition:var(--transition-theme),transform .2s,border-color .2s;
}
.sensor-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.sensor-card[style*="cursor"]:hover{border-color:var(--accent)}
.sensor-card-active{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-light),var(--shadow-lg)}
.sensor-header{display:flex;align-items:center;gap:.5rem;margin-bottom:.5rem}
.sensor-icon{font-size:1.25rem}
.sensor-label{font-size:.75rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}
.sensor-value{font-size:1.75rem;font-weight:700;line-height:1.2;color:var(--text-primary)}
.sensor-trend{font-size:.8rem;color:var(--text-secondary);margin-top:.25rem}
.sensor-detail{font-size:.8rem;color:var(--text-secondary);margin-top:.25rem}
.sensor-sparkline{margin-top:.5rem;height:40px;overflow:hidden}
.sensor-sparkline canvas{width:100%;height:100%}
.slide-down{animation:slideDown .3s ease-out both}

/* --- Dashboard Bottom: Wind Rose + Forecast --- */
.dashboard-bottom{
  display:grid;grid-template-columns:1fr;gap:1rem;
  padding:0 1rem 1.5rem;max-width:1280px;margin:0 auto;
}
.windrose-card,.forecast-card{overflow:hidden}
.windrose-container{display:flex;justify-content:center;align-items:center}
.windrose-container canvas{max-width:300px;width:100%;aspect-ratio:1}
.windrose-legend{text-align:center;margin-top:.5rem;line-height:1.8}
.forecast-container{min-height:120px}
.forecast-scroll{
  display:flex;gap:.75rem;overflow-x:auto;padding-bottom:.5rem;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.forecast-day{
  flex:0 0 110px;scroll-snap-align:start;
  background:var(--bg-card);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  border:1px solid var(--border);border-radius:.75rem;padding:.75rem .5rem;text-align:center;
}
.forecast-day-name{font-size:.8rem;font-weight:600;color:var(--text-secondary)}
.forecast-day-icon{font-size:1.75rem;margin:.25rem 0}
.forecast-day-temps{font-size:.9rem;font-weight:600}
.temp-hi{color:var(--temp-warm)}
.temp-lo{color:var(--temp-cold);opacity:.7}
.forecast-day-rain{font-size:.75rem;color:var(--rain-color);margin-top:.15rem}
.forecast-day-wind{font-size:.75rem;color:var(--wind-color);margin-top:.15rem}

/* --- Page Title --- */
.page-title{
  font-size:1.5rem;font-weight:700;color:var(--text-primary);
  padding:1.5rem 1rem .75rem;max-width:1280px;margin:0 auto;
}

/* --- Charts Page --- */
.range-selector{
  display:flex;flex-wrap:wrap;gap:.4rem;
  padding:0 1rem;max-width:1280px;margin:0 auto .75rem;
}
.range-btn{
  padding:.4rem .75rem;border:1px solid var(--border);border-radius:.5rem;
  background:var(--bg-card);color:var(--text-secondary);font-size:.8rem;font-weight:500;
  cursor:pointer;transition:background .2s,color .2s;
}
.range-btn:hover,.range-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.custom-range{
  display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;
  padding:0 1rem;max-width:1280px;margin:0 auto .75rem;
}
.custom-range.hidden{display:none}
.date-input{
  padding:.4rem .6rem;border:1px solid var(--border);border-radius:.5rem;
  background:var(--bg-card);color:var(--text-primary);font-size:.85rem;
}
.btn-apply{
  padding:.4rem .75rem;border:1px solid var(--accent);border-radius:.5rem;
  background:var(--accent);color:#fff;font-size:.8rem;font-weight:500;cursor:pointer;
}
.btn-apply:hover{opacity:.9}
.sensor-tabs{
  display:flex;flex-wrap:wrap;gap:.4rem;
  padding:0 1rem;max-width:1280px;margin:0 auto .75rem;
}
.sensor-tab{
  padding:.4rem .75rem;border:1px solid var(--border);border-radius:.5rem;
  background:var(--bg-card);color:var(--text-secondary);font-size:.8rem;font-weight:500;
  cursor:pointer;transition:background .2s,color .2s;
}
.sensor-tab:hover,.sensor-tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.chart-card{
  margin:0 1rem 1rem;max-width:calc(1280px - 2rem);margin-left:auto;margin-right:auto;
  padding:1rem;
}
.chart-container{height:350px;position:relative}
.chart-container canvas{position:absolute;inset:0;width:100%!important;height:100%!important}

/* --- Stats Panel --- */
.stats-panel{
  display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem;
  padding:0 1rem 1.5rem;max-width:1280px;margin:0 auto;
}
.stat-card{
  background:var(--bg-card);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  border:1px solid var(--border);border-radius:.75rem;padding:.75rem 1rem;
  box-shadow:var(--shadow-sm);
}
.stat-label{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted)}
.stat-value{font-size:1.5rem;font-weight:700;color:var(--text-primary);line-height:1.3}
.stat-time{font-size:.75rem;color:var(--text-secondary)}

/* --- Records Page --- */
.records-grid{
  display:grid;grid-template-columns:1fr;gap:1rem;
  padding:0 1rem 1.5rem;max-width:1280px;margin:0 auto;
}
.records-card{overflow:hidden;position:relative}
.records-card[data-icon]::after{content:attr(data-icon);position:absolute;left:4%;top:50%;transform:translateY(-50%);font-size:clamp(4rem,8vw,7rem);opacity:.5;pointer-events:none;line-height:1;z-index:0}
.records-card .card-title,.records-card .records-table{position:relative;z-index:1}
.records-table{width:100%;border-collapse:collapse}
.records-table th,.records-table td{padding:.5rem .75rem;text-align:left;font-size:.85rem;border-bottom:1px solid var(--border)}
.records-table th{font-weight:600;color:var(--text-muted);text-transform:uppercase;font-size:.7rem;letter-spacing:.04em}
.records-table thead{border-bottom:2px solid var(--border)}
.records-table tr:hover td{background:var(--accent-light)}
.record-value{font-weight:700;color:var(--text-primary);white-space:nowrap}
.record-date{color:var(--text-secondary);white-space:nowrap}

/* --- Login Modal --- */
.login-modal-overlay{
  position:fixed;inset:0;z-index:2000;
  background:rgba(0,0,0,.5);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;
  animation:fadeIn .2s ease-out;
}
.login-modal{
  background:var(--bg-card);border:1px solid var(--border);border-radius:1rem;
  padding:1.5rem;width:min(90vw,360px);position:relative;
  box-shadow:var(--shadow-lg);
}
.login-modal h3{font-size:1.1rem;font-weight:700;margin-bottom:1rem;color:var(--text-primary)}
.login-field{margin-bottom:.75rem}
.login-field label{display:block;font-size:.8rem;font-weight:600;color:var(--text-muted);margin-bottom:.25rem;text-transform:uppercase;letter-spacing:.04em}
.login-field input{width:100%;padding:.5rem .75rem}
.login-error{color:#ef4444;font-size:.85rem;margin-top:.5rem;text-align:center}
.login-close{
  position:absolute;top:.75rem;right:.75rem;background:none;border:none;
  font-size:1.25rem;cursor:pointer;color:var(--text-muted);line-height:1;
}
.login-close:hover{color:var(--text-primary)}

/* --- About Page --- */
.about-grid{
  display:grid;grid-template-columns:1fr;gap:1rem;
  padding:0 1rem 1.5rem;max-width:1280px;margin:0 auto;
}
.about-card h3{font-size:1.1rem;font-weight:700;color:var(--text-primary);margin-bottom:.75rem}
.about-card p{color:var(--text-secondary);line-height:1.7;margin-bottom:1rem}
.about-table{width:100%;border-collapse:collapse}
.about-table td{padding:.5rem .75rem;font-size:.875rem;border-bottom:1px solid var(--border)}
.about-table td:first-child{font-weight:600;color:var(--text-muted);white-space:nowrap;width:40%}
.map-container{border-radius:.5rem;overflow:hidden;aspect-ratio:16/10}
.map-iframe{width:100%;height:100%;border:0}
.about-links{list-style:none;padding:0}
.about-links li{padding:.5rem 0;border-bottom:1px solid var(--border)}
.about-links li:last-child{border-bottom:none}

/* --- Footer --- */
.footer{
  text-align:center;padding:1.5rem 1rem;font-size:.8rem;color:var(--text-muted);
  border-top:1px solid var(--border);
}
.footer a{color:var(--accent)}
.footer-container{max-width:1280px;margin:0 auto}
.footer-info{margin-bottom:.25rem}
.footer-sep{margin:0 .35rem;opacity:.5}
.footer-update{opacity:.8}

/* --- Animations --- */
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.fade-in{animation:fadeIn .4s ease-out both}
.stagger:nth-child(1){animation-delay:.05s}
.stagger:nth-child(2){animation-delay:.1s}
.stagger:nth-child(3){animation-delay:.15s}
.stagger:nth-child(4){animation-delay:.2s}
.stagger:nth-child(5){animation-delay:.25s}
.stagger:nth-child(6){animation-delay:.3s}
.stagger:nth-child(7){animation-delay:.35s}
.stagger:nth-child(8){animation-delay:.4s}

/* --- Scrollbar --- */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:3px}
*{scrollbar-width:thin;scrollbar-color:var(--scrollbar-thumb) transparent}

/* --- Accessibility --- */
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* --- Responsive --- */
@media(min-width:640px){
  .nav-links{display:flex}
  .nav-hamburger{display:none}
  .nav-links.open{position:static;flex-direction:row;border:none;padding:0;box-shadow:none}
  .hero{padding:3rem 1.5rem}
  .sensor-grid{grid-template-columns:repeat(3,1fr)}
  .dashboard-bottom{grid-template-columns:1fr 1fr}
  .stats-panel{grid-template-columns:repeat(4,1fr)}
  .records-grid{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:repeat(2,1fr)}
  .forecast-day{flex:0 0 120px}
}
@media(min-width:1024px){
  .hero{padding:4rem 2rem}
  .sensor-grid{grid-template-columns:repeat(4,1fr)}
  .about-grid{grid-template-columns:repeat(2,1fr)}
  .about-card.about-map{grid-column:span 2}
}
@media(min-width:1280px){
  .sensor-grid{gap:1.25rem}
  .forecast-day{flex:0 0 140px}
}

/* --- Print --- */
@media print{
  body{background:#fff;color:#000}
  .navbar{position:static;background:none;border-bottom:1px solid #ccc}
  .btn-icon,.nav-hamburger{display:none}
  .card,.sensor-card,.stat-card{break-inside:avoid;box-shadow:none;border:1px solid #ddd}
  .hero{background:none;color:#000}
  .forecast-scroll{flex-wrap:wrap;overflow:visible}
}

/* --- Expanded Chart (click on sensor card) --- */
.sensor-card.expandable{cursor:pointer}
.sensor-card.expandable:hover{border-color:var(--accent)}
.sensor-card.active{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-light)}
.expanded-chart{
  margin:0 1rem 1.5rem;max-width:1280px;margin-left:auto;margin-right:auto;
  background:var(--bg-card);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);
  border:1px solid var(--border);border-radius:1rem;padding:1rem;
  box-shadow:var(--shadow-md);overflow:hidden;
  animation:slideDown .3s ease-out;
}
.expanded-chart.hidden{display:none}
.expanded-chart-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}
.expanded-chart-title{font-size:.875rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}
.expanded-chart-close{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:1.25rem;padding:.25rem}
.expanded-chart-canvas{height:250px;width:100%}
.expanded-chart-canvas canvas{width:100%!important;height:100%!important}
@keyframes slideDown{from{opacity:0;max-height:0;padding:0 1rem}to{opacity:1;max-height:500px;padding:1rem}}

/* --- Auth Modal --- */
.modal-overlay{
  position:fixed;inset:0;z-index:9999;
  background:rgba(0,0,0,0.5);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;
  animation:fadeIn .2s ease-out;
}
.modal-overlay.hidden{display:none}
.modal{
  background:var(--bg-card);border:1px solid var(--border);border-radius:1rem;
  padding:2rem;width:90%;max-width:360px;box-shadow:var(--shadow-lg);
}
.modal h3{font-size:1.1rem;margin-bottom:1rem;color:var(--text-primary)}
.modal-input{
  display:block;width:100%;padding:.6rem .75rem;margin-bottom:.75rem;
  border:1px solid var(--border);border-radius:.5rem;
  background:var(--bg-primary);color:var(--text-primary);font-size:.9rem;
}
.modal-input:focus{outline:none;border-color:var(--accent)}
.modal-actions{display:flex;gap:.5rem;margin-top:.5rem}
.modal-btn{
  flex:1;padding:.6rem;border:1px solid var(--border);border-radius:.5rem;
  font-size:.875rem;font-weight:500;cursor:pointer;transition:background .2s;
}
.modal-btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.modal-btn-primary:hover{opacity:.9}
.modal-btn-secondary{background:var(--bg-card);color:var(--text-secondary)}
.modal-btn-secondary:hover{background:var(--bg-secondary)}
.modal-error{color:#ef4444;font-size:.8rem;margin-top:.5rem;min-height:1.2em}

/* --- Reports Page --- */
.reports-nav{
  display:flex;flex-wrap:wrap;gap:.5rem;
  padding:0 1rem;max-width:1280px;margin:0 auto .75rem;
}
.reports-year-btn{
  padding:.4rem .75rem;border:1px solid var(--border);border-radius:.5rem;
  background:var(--bg-card);color:var(--text-secondary);font-size:.85rem;font-weight:600;
  cursor:pointer;transition:background .2s,color .2s;
}
.reports-year-btn:hover,.reports-year-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.reports-months{
  display:flex;flex-wrap:wrap;gap:.35rem;
  padding:0 1rem;max-width:1280px;margin:0 auto .75rem;
}
.reports-month-btn{
  padding:.3rem .6rem;border:1px solid var(--border);border-radius:.375rem;
  background:var(--bg-card);color:var(--text-secondary);font-size:.8rem;
  cursor:pointer;transition:background .2s,color .2s;
}
.reports-month-btn:hover,.reports-month-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.reports-month-btn:disabled{opacity:.3;cursor:not-allowed}
.reports-view-toggle{
  display:flex;gap:.35rem;
  padding:0 1rem;max-width:1280px;margin:0 auto .75rem;
}
.report-table-wrapper{
  padding:0 1rem;max-width:1280px;margin:0 auto 1.5rem;overflow-x:auto;
}
.report-table{
  width:100%;border-collapse:collapse;
  background:var(--bg-card);border:1px solid var(--border);border-radius:1rem;
  overflow:hidden;font-size:.8rem;
}
.report-table th,.report-table td{padding:.5rem .6rem;text-align:right;border-bottom:1px solid var(--border);white-space:nowrap}
.report-table th{background:var(--bg-secondary);font-weight:600;color:var(--text-muted);text-transform:uppercase;font-size:.7rem;letter-spacing:.03em;position:sticky;top:0}
.report-table td:first-child,.report-table th:first-child{text-align:left;font-weight:600}
.report-table tr:hover td{background:var(--accent-light)}
.report-table tfoot td{font-weight:700;border-top:2px solid var(--border);background:var(--bg-secondary)}
.report-table .temp-val{color:var(--temp-warm)}
.report-table .temp-val.cold{color:var(--temp-cold)}
.report-table .rain-val{color:var(--rain-color)}
.report-table .wind-val{color:var(--wind-color)}
.report-table .time-val{font-size:.7rem;color:var(--text-muted)}

/* --- Period Records Separator --- */
.section-separator{
  border:none;border-top:2px solid var(--border);margin:2rem 1rem 0;
  max-width:1280px;margin-left:auto;margin-right:auto;
}