/* AquaSphere – tailwind base is loaded via CDN in base.html */
/* Custom CSS variables + utilities that mirror the Next.js globals.css */

/* ── Light mode (default) ── */
:root {
  --background: oklch(0.97 0 0);
  --foreground: oklch(0.10 0 0);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.10 0 0);
  --primary: oklch(0.50 0 0);
  --primary-foreground: oklch(0.98 0 0);
  --secondary: oklch(0.92 0 0);
  --secondary-foreground: oklch(0.20 0 0);
  --muted: oklch(0.94 0 0);
  --muted-foreground: oklch(0.40 0 0);
  --accent: oklch(0.45 0 0);
  --accent-foreground: oklch(0.98 0 0);
  --destructive: oklch(0.40 0 0);
  --border: oklch(0.88 0 0);
  --input: oklch(0.94 0 0);
  --ring: oklch(0.50 0 0);
  --radius: 0.75rem;
  --sidebar: oklch(0.94 0 0);
  --sidebar-border: oklch(0.87 0 0);
  --sidebar-accent: oklch(0.90 0 0);
  --aqua-glow: oklch(0.50 0 0 / 0.25);
  --glass-bg: oklch(0.97 0 0 / 0.85);
  --glass-border: oklch(0.85 0 0 / 0.6);
  --light-grey: oklch(0.75 0 0);
  --medium-light-grey: oklch(0.70 0 0);
  --medium-grey: oklch(0.55 0 0);
  --medium-dark-grey: oklch(0.40 0 0);
  --very-dark: oklch(0.10 0 0);
  --danger: oklch(0.60 0.25 29.198);
}

/* ── Dark mode ── */
html.dark {
  --background: oklch(0.09 0 0);
  --foreground: oklch(0.95 0 0);
  --card: oklch(0.12 0 0);
  --card-foreground: oklch(0.95 0 0);
  --primary: oklch(0.75 0 0);
  --primary-foreground: oklch(0.1 0 0);
  --secondary: oklch(0.18 0 0);
  --secondary-foreground: oklch(0.85 0 0);
  --muted: oklch(0.16 0 0);
  --muted-foreground: oklch(0.55 0 0);
  --accent: oklch(0.70 0 0);
  --accent-foreground: oklch(0.1 0 0);
  --destructive: oklch(0.60 0 0);
  --border: oklch(0.22 0 0);
  --input: oklch(0.18 0 0);
  --ring: oklch(0.75 0 0);
  --sidebar: oklch(0.07 0 0);
  --sidebar-border: oklch(0.18 0 0);
  --sidebar-accent: oklch(0.14 0 0);
  --aqua-glow: oklch(0.75 0 0 / 0.3);
  --glass-bg: oklch(0.12 0 0 / 0.8);
  --glass-border: oklch(0.25 0 0 / 0.5);
  --light-grey: oklch(0.75 0 0);
  --medium-light-grey: oklch(0.70 0 0);
  --medium-grey: oklch(0.55 0 0);
  --medium-dark-grey: oklch(0.40 0 0);
  --very-dark: oklch(0.10 0 0);
  --danger: oklch(0.60 0.25 29.198);
}

* { box-sizing: border-box; }

html, body {
  background-color: var(--background);
  color: var(--foreground);
  font-family: 'Inter', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--background); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted-foreground); }

/* focus */
*:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; }

/* Animations */
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes slide-up {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes scale-in {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes glow {
  from { box-shadow: 0 0 10px var(--aqua-glow), 0 0 20px var(--aqua-glow); }
  to   { box-shadow: 0 0 20px var(--aqua-glow), 0 0 40px var(--aqua-glow); }
}

.animate-fade-in   { animation: fade-in 0.5s ease-out; }
.animate-slide-up  { animation: slide-up 0.4s ease-out; }
.animate-scale-in  { animation: scale-in 0.2s ease-out; }
.animate-glow      { animation: glow 2s ease-in-out infinite alternate; }

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
}
.glow-primary {
  box-shadow: 0 0 20px var(--aqua-glow), 0 0 40px var(--aqua-glow);
}
.hover-lift {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}
.gradient-border {
  position: relative;
  background: linear-gradient(var(--card), var(--card)) padding-box,
              linear-gradient(135deg, var(--primary), var(--accent)) border-box;
  border: 1px solid transparent;
}

/* Sidebar */
.sidebar {
  background-color: var(--sidebar);
  border-right: 1px solid var(--sidebar-border);
}

/* Card */
.card {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

/* Homescreen hero */
.hero-scrim {
  background: linear-gradient(to top, rgba(0,0,0,0.78) 0%, rgba(0,0,0,0.30) 40%, transparent 68%);
}
.hero-stat-card {
  background: linear-gradient(135deg, rgba(255,255,255,0.10), rgba(255,255,255,0.02));
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid rgba(255,255,255,0.22);
  box-shadow: 0 4px 18px rgba(0,0,0,0.18), inset 0 1px 0 rgba(255,255,255,0.18);
}
.hero-stat-card p {
  text-shadow: 0 1px 3px rgba(0,0,0,0.55);
}
.hero-chart-panel {
  background: linear-gradient(135deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  box-shadow: 0 4px 18px rgba(0,0,0,0.18), inset 0 1px 0 rgba(255,255,255,0.15);
}
.hero-chart-panel p {
  text-shadow: 0 1px 3px rgba(0,0,0,0.55);
}
.hero-tab-btn {
  color: rgba(255,255,255,0.85);
  background-color: rgba(0,0,0,0.32);
  border: 1px solid rgba(255,255,255,0.15);
}
.hero-tab-btn:hover {
  background-color: rgba(0,0,0,0.45);
}
.hero-tab-active {
  background-color: rgba(255,255,255,0.92) !important;
  color: oklch(0.15 0 0) !important;
  border-color: rgba(255,255,255,0.92) !important;
}
.hero-map-layer {
  isolation: isolate;
}

/* Form inputs */
.form-input {
  background-color: var(--input);
  border: 1px solid var(--border);
  color: var(--foreground);
  border-radius: calc(var(--radius) - 2px);
  padding: 0.5rem 0.75rem;
  width: 100%;
  font-size: 0.875rem;
  transition: border-color 0.15s;
}
.form-input:focus {
  outline: none;
  border-color: var(--ring);
  box-shadow: 0 0 0 2px oklch(0.75 0 0 / 0.2);
}
.form-input::placeholder { color: var(--muted-foreground); }

/* Select */
select.form-input option {
  background-color: var(--card);
  color: var(--foreground);
}

/* Btn */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: calc(var(--radius) - 2px);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  border: none;
}
.btn-primary {
  background-color: var(--primary);
  color: var(--primary-foreground);
}
.btn-primary:hover { opacity: 0.9; }
.btn-secondary {
  background-color: var(--secondary);
  color: var(--secondary-foreground);
}
.btn-secondary:hover { background-color: var(--medium-dark-grey); }
.btn-destructive {
  background-color: var(--secondary);
  color: var(--danger);
  border: 1px solid oklch(0.40 0 0 / 0.3);
}
.btn-destructive:hover {
  background-color: var(--medium-dark-grey);
}
.btn-ghost {
  background: transparent;
  color: var(--muted-foreground);
}
.btn-ghost:hover { background-color: var(--secondary); color: var(--foreground); }
.rearing-tab-btn {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 0.9rem;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1;
    color: var(--medium-grey, oklch(0.6 0.01 240));
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    cursor: pointer;
    white-space: nowrap;
    transition: color 0.15s ease, border-color 0.15s ease;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}

/* Progress bar */
.progress-bar-bg {
  height: 8px;
  border-radius: 9999px;
  background-color: var(--secondary);
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  border-radius: 9999px;
  background: linear-gradient(to right, var(--primary), var(--accent));
  transition: width 1s ease-out;
}

/* Nav link active */
.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted-foreground);
  text-decoration: none;
  transition: all 0.2s;
}
.nav-link:hover {
  background-color: var(--sidebar-accent);
  color: var(--foreground);
}
.nav-link.active {
  background-color: oklch(0.75 0 0 / 0.1);
  color: var(--primary);
}

.sidebar-dropdown { padding: 4px 8px 10px; }
.sidebar-search-input { width: 100%; height: 30px; margin-bottom: 8px; }
.sidebar-scroll-list { max-height: 180px; overflow-y: auto; display: flex; flex-direction: column; gap: 2px; }
.sessions-dropdown-row { display: flex; align-items: center; gap: 8px; padding: 6px; border-radius: 6px; text-decoration: none; }
.sessions-dropdown-row:hover { background: rgba(255,255,255,0.  05); }
.status-dot--active { width: 6px; height: 6px; border-radius: 50%; background: #2fbf71; flex-shrink: 0; }
.chevron--open { transform: rotate(0deg); }

/* Alert / message */
.alert { padding: 0.75rem 1rem; border-radius: var(--radius); font-size: 0.875rem; margin-bottom: 1rem; }
.alert-success { background: oklch(0.70 0 0 / 0.1); border: 1px solid oklch(0.70 0 0 / 0.3); color: var(--accent); }
.alert-error   { background: oklch(0.40 0 0 / 0.1);  border: 1px solid oklch(0.40 0 0 / 0.3);  color: oklch(0.40 0 0); }