/* ==========================================================================
   AquaCert LMS — brand design system
   Clean, professional, trustworthy water-utility palette (deep blue + teal).
   Built on Bootstrap 5; overrides + custom components live here.
   All colors meet WCAG AA contrast for their usage.
   ========================================================================== */

:root {
  /* Brand palette */
  --ac-primary: #0369a1;        /* deep ocean blue — primary actions/links */
  --ac-primary-dark: #075985;   /* hover/active */
  --ac-primary-darker: #0c4a6e;
  --ac-navy: #082f49;           /* dark sections (hero, footer) */
  --ac-navy-2: #0b3a5b;

  --ac-teal: #0d9488;           /* teal accent (decorative) */
  --ac-teal-dark: #0f766e;      /* teal accent for text on white */
  --ac-teal-light: #5eead4;     /* teal accent on dark backgrounds */

  --ac-ink: #0f1b2a;            /* body text */
  --ac-muted: #55677a;          /* secondary text (AA on white) */
  --ac-bg: #f5f8fb;             /* page background */
  --ac-surface: #ffffff;
  --ac-surface-2: #eef4f9;
  --ac-border: #e1e8f0;

  --ac-success: #15803d;
  --ac-warning: #b45309;
  --ac-danger: #b91c1c;

  --ac-shadow-sm: 0 1px 2px rgba(8, 47, 73, .06), 0 1px 3px rgba(8, 47, 73, .08);
  --ac-shadow-md: 0 4px 12px rgba(8, 47, 73, .08), 0 2px 6px rgba(8, 47, 73, .06);
  --ac-shadow-lg: 0 18px 40px rgba(8, 47, 73, .14);
  --ac-radius: .75rem;
  --ac-radius-sm: .5rem;

  /* Map Bootstrap theme variables to the brand */
  --bs-primary: var(--ac-primary);
  --bs-primary-rgb: 3, 105, 161;
  --bs-link-color: var(--ac-primary);
  --bs-link-color-rgb: 3, 105, 161;
  --bs-link-hover-color: var(--ac-primary-dark);
  --bs-body-color: var(--ac-ink);
  --bs-body-bg: var(--ac-bg);
  --bs-border-color: var(--ac-border);
  --bs-body-font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* ---------- Base ---------- */
html {
  font-size: 15px;
  position: relative;
  min-height: 100%;
  -webkit-text-size-adjust: 100%;
}

@media (min-width: 768px) {
  html { font-size: 16px; }
}

body {
  font-family: var(--bs-body-font-family);
  color: var(--ac-ink);
  background-color: var(--ac-bg);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main { flex: 1 0 auto; }

h1, h2, h3, h4, h5, h6, .h1, .h2, .h3 {
  color: var(--ac-navy);
  font-weight: 700;
  letter-spacing: -.01em;
}

p { line-height: 1.65; }

a { color: var(--ac-primary); text-decoration: none; }
a:hover { color: var(--ac-primary-dark); text-decoration: underline; }

.text-muted { color: var(--ac-muted) !important; }
.lead { color: #3a4a5a; }

/* Accessible focus ring in brand color */
.btn:focus, .btn:active:focus, .btn-link.nav-link:focus,
.form-control:focus, .form-select:focus, .form-check-input:focus,
a:focus-visible, .nav-link:focus-visible {
  outline: none;
  box-shadow: 0 0 0 .2rem rgba(3, 105, 161, .35);
}

/* ---------- Header / navbar ---------- */
.ac-navbar {
  background: var(--ac-surface);
  border-bottom: 1px solid var(--ac-border);
  box-shadow: var(--ac-shadow-sm);
  padding-top: .55rem;
  padding-bottom: .55rem;
}

.ac-brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -.02em;
  color: var(--ac-navy) !important;
  white-space: nowrap;
}
.ac-brand:hover { text-decoration: none; }
.ac-brand .ac-brand-mark {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: linear-gradient(150deg, var(--ac-primary), var(--ac-teal));
  box-shadow: 0 2px 6px rgba(3, 105, 161, .3);
}
.ac-brand .ac-brand-mark svg { width: 20px; height: 20px; }
.ac-brand .ac-brand-name { color: var(--ac-navy); }
.ac-brand .ac-brand-name .ac-cert { color: var(--ac-primary); }

.ac-navbar .nav-link {
  color: #33475b;
  font-weight: 500;
  padding: .5rem .9rem;
  border-radius: 8px;
  transition: color .12s ease, background-color .12s ease;
}
.ac-navbar .nav-link:hover { color: var(--ac-primary); background: var(--ac-surface-2); text-decoration: none; }
.ac-navbar .nav-link.active { color: var(--ac-primary); background: var(--ac-surface-2); }

/* Login/register/logout on the right */
.ac-navbar .navbar-nav .btn-link.nav-link { text-decoration: none; }

/* ---------- Buttons ---------- */
.btn {
  font-weight: 600;
  border-radius: 10px;
  padding: .55rem 1.15rem;
  transition: transform .04s ease, box-shadow .15s ease, background-color .15s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  --bs-btn-bg: var(--ac-primary);
  --bs-btn-border-color: var(--ac-primary);
  --bs-btn-hover-bg: var(--ac-primary-dark);
  --bs-btn-hover-border-color: var(--ac-primary-dark);
  --bs-btn-active-bg: var(--ac-primary-darker);
  --bs-btn-active-border-color: var(--ac-primary-darker);
  --bs-btn-disabled-bg: var(--ac-primary);
  --bs-btn-disabled-border-color: var(--ac-primary);
  color: #fff;
  background-color: var(--ac-primary);
  border-color: var(--ac-primary);
  box-shadow: 0 2px 6px rgba(3, 105, 161, .25);
}
.btn-primary:hover, .btn-primary:focus {
  color: #fff;
  background-color: var(--ac-primary-dark);
  border-color: var(--ac-primary-dark);
}

.btn-outline-primary {
  --bs-btn-color: var(--ac-primary);
  --bs-btn-border-color: var(--ac-primary);
  --bs-btn-hover-bg: var(--ac-primary);
  --bs-btn-hover-border-color: var(--ac-primary);
  --bs-btn-active-bg: var(--ac-primary-dark);
  color: var(--ac-primary);
  border-color: var(--ac-primary);
}

/* Teal accent button (used on dark hero) */
.btn-accent {
  color: var(--ac-navy);
  background-color: var(--ac-teal-light);
  border: 1px solid var(--ac-teal-light);
  box-shadow: 0 2px 10px rgba(94, 234, 212, .28);
}
.btn-accent:hover { color: var(--ac-navy); background-color: #7af0dd; border-color: #7af0dd; }

.btn-light-outline {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .55);
  background: transparent;
}
.btn-light-outline:hover { color: var(--ac-navy); background: #fff; border-color: #fff; }

.btn-success {
  --bs-btn-bg: var(--ac-success);
  --bs-btn-border-color: var(--ac-success);
  --bs-btn-hover-bg: #126b34;
  --bs-btn-hover-border-color: #126b34;
}

/* ---------- Cards ---------- */
.card {
  border: 1px solid var(--ac-border);
  border-radius: var(--ac-radius);
  background: var(--ac-surface);
  box-shadow: var(--ac-shadow-sm);
  transition: box-shadow .18s ease, transform .18s ease, border-color .18s ease;
}
.card-title { color: var(--ac-navy); font-weight: 700; }

/* Interactive course cards */
.ac-course-card { overflow: hidden; }
.ac-course-card:hover {
  box-shadow: var(--ac-shadow-md);
  transform: translateY(-3px);
  border-color: #c9d8e6;
}
.ac-course-card .ac-course-top {
  height: 6px;
  background: linear-gradient(90deg, var(--ac-primary), var(--ac-teal));
}
.ac-price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--ac-navy);
}
.ac-price small { font-size: .8rem; font-weight: 600; color: var(--ac-muted); }

/* ---------- Badges / pills ---------- */
.badge { font-weight: 600; border-radius: 999px; padding: .4em .7em; letter-spacing: .01em; }
.ac-badge-approved {
  color: var(--ac-success);
  background: #e7f6ec;
  border: 1px solid #bfe6cc;
}
.ac-badge-pending {
  color: var(--ac-warning);
  background: #fdf3e7;
  border: 1px solid #f4d9b0;
}
.ac-pill {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .8rem;
  font-weight: 600;
  padding: .3rem .7rem;
  border-radius: 999px;
}
.ac-pill-complete { color: var(--ac-success); background: #e7f6ec; border: 1px solid #bfe6cc; }
.ac-pill-progress { color: var(--ac-primary-dark); background: #e6f1f8; border: 1px solid #c3ddef; }
.ac-pill-dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }

/* ---------- Eyebrow / section headings ---------- */
.ac-eyebrow {
  text-transform: uppercase;
  letter-spacing: .12em;
  font-weight: 700;
  font-size: .78rem;
  color: var(--ac-teal-dark);
}

/* ---------- Hero ---------- */
.ac-hero {
  position: relative;
  color: #eaf3fa;
  background:
    radial-gradient(1100px 500px at 82% -8%, rgba(13, 148, 136, .38), transparent 60%),
    radial-gradient(900px 480px at 5% 108%, rgba(3, 105, 161, .5), transparent 55%),
    linear-gradient(135deg, var(--ac-navy) 0%, var(--ac-navy-2) 55%, #0c4a6e 100%);
  border-radius: 20px;
  overflow: hidden;
}
.ac-hero::after {
  /* subtle wave at the bottom edge */
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 60px;
  background: var(--ac-bg);
  clip-path: ellipse(75% 100% at 50% 100%);
  opacity: 0;
}
.ac-hero h1 { color: #fff; font-size: clamp(2rem, 4.5vw, 3.2rem); line-height: 1.08; }
.ac-hero .ac-eyebrow { color: var(--ac-teal-light); }
.ac-hero p.lead { color: #cfe2f0; }
.ac-hero-trust { color: #b7cfe1; font-size: .9rem; }
.ac-hero-trust svg { color: var(--ac-teal-light); }

/* Panel used on the hero (course spotlight) */
.ac-hero-panel {
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 16px;
  backdrop-filter: blur(2px);
}
.ac-hero-panel .ac-hero-panel-price { color: #fff; }

/* ---------- Feature blocks ---------- */
.ac-feature-icon {
  width: 46px; height: 46px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 12px;
  color: var(--ac-primary);
  background: var(--ac-surface-2);
  border: 1px solid #d8e6f1;
}
.ac-feature-icon svg { width: 24px; height: 24px; }

.ac-step-num {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(150deg, var(--ac-primary), var(--ac-teal));
}

/* Soft feature/section band */
.ac-band { background: var(--ac-surface); border-top: 1px solid var(--ac-border); border-bottom: 1px solid var(--ac-border); }

/* ---------- Tables ---------- */
.table { --bs-table-bg: transparent; color: var(--ac-ink); }
.ac-table-card {
  background: var(--ac-surface);
  border: 1px solid var(--ac-border);
  border-radius: var(--ac-radius);
  box-shadow: var(--ac-shadow-sm);
  overflow: hidden;
}
.ac-table-card .table { margin-bottom: 0; }
.ac-table-card .table thead th {
  background: var(--ac-surface-2);
  color: var(--ac-navy);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  border-bottom: 1px solid var(--ac-border);
  padding: .85rem 1rem;
}
.ac-table-card .table tbody td { padding: .9rem 1rem; vertical-align: middle; border-color: #eef2f6; }
.ac-table-card .table tbody tr:last-child td { border-bottom: 0; }

/* ---------- Progress ---------- */
.progress { background: #e6edf3; border-radius: 999px; height: .55rem; }
.progress-bar { background: linear-gradient(90deg, var(--ac-primary), var(--ac-teal)); }

/* ---------- Alerts ---------- */
.alert { border-radius: var(--ac-radius-sm); border: 1px solid transparent; }
.alert-success { color: #0f5132; background: #e7f6ec; border-color: #bfe6cc; }
.alert-warning { color: #7a4c07; background: #fdf3e7; border-color: #f4d9b0; }
.alert-danger  { color: #842029; background: #fbe9e9; border-color: #f2c2c2; }

/* ---------- Forms / auth pages ---------- */
.form-control, .form-select {
  border-radius: 10px;
  border-color: #d5dfe8;
  padding: .55rem .8rem;
}
.form-control:focus, .form-select:focus { border-color: var(--ac-primary); }
.form-floating > label { color: var(--ac-muted); }

/* ---------- Identity auth pages (Login, Register, password reset, etc.) ----------
   Stock ASP.NET Identity markup, restyled purely via the .ac-auth-page body class
   set in Areas/Identity/Pages/Account/_ViewStart.cshtml. No page logic is touched. */
.ac-auth-page main > .container {
  max-width: 480px;
}
.ac-auth-page main h1 {
  text-align: center;
  font-size: 1.7rem;
  margin-bottom: 1.25rem;
}
.ac-auth-page main hr { display: none; }

/* Collapse the default two-column grid into one centered column */
.ac-auth-page main .row { justify-content: center; }
.ac-auth-page main .row > div:first-child {
  flex: 0 0 100%;
  max-width: 100%;
  background: var(--ac-surface);
  border: 1px solid var(--ac-border);
  border-radius: var(--ac-radius);
  box-shadow: var(--ac-shadow-md);
  padding: 2rem;
}

/* Hide the "Use another service to log in" column — developer boilerplate shown
   only while no external providers are configured. Remove this rule if you add SSO. */
.ac-auth-page main .row > .col-lg-4,
.ac-auth-page main .row > [class*="offset"] { display: none; }

/* The in-card subheading ("Use a local account…", "Create a new account.") is
   redundant with the page's h1 — shrink it to a muted caption. */
.ac-auth-page main .row h2 {
  font-size: .95rem;
  font-weight: 600;
  color: var(--ac-muted);
  text-align: center;
  margin-bottom: 1.5rem;
}

.ac-auth-page form { margin-bottom: .25rem; }
.ac-auth-page .form-floating { margin-bottom: 1rem; }
.ac-auth-page [type="submit"].btn { width: 100%; }
.ac-auth-page .checkbox, .ac-auth-page .form-check { margin-bottom: 1rem; }
.ac-auth-page a { font-weight: 500; }

/* ---------- Verification result ---------- */
.ac-verify-banner {
  display: flex; align-items: center; gap: .9rem;
  border-radius: var(--ac-radius);
  padding: 1.1rem 1.25rem;
  font-weight: 600;
}
.ac-verify-valid { color: #0f5132; background: #e7f6ec; border: 1px solid #bfe6cc; }
.ac-verify-invalid { color: #842029; background: #fbe9e9; border: 1px solid #f2c2c2; }
.ac-verify-icon { flex: 0 0 auto; width: 40px; height: 40px; }

/* ---------- Page heading helper ---------- */
.ac-page-head { margin: .5rem 0 1.5rem; }
.ac-page-head h1 { margin-bottom: .35rem; }

/* ---------- Footer ---------- */
.ac-footer {
  flex-shrink: 0;
  background: var(--ac-navy);
  color: #b7cfe1;
  border-top: 4px solid var(--ac-teal);
  margin-top: 3.5rem;
}
.ac-footer a { color: #d7e7f2; }
.ac-footer a:hover { color: #fff; }
.ac-footer .ac-brand-name { color: #fff; }
.ac-footer .ac-footer-mark {
  width: 30px; height: 30px; border-radius: 9px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(150deg, var(--ac-primary), var(--ac-teal));
}
.ac-footer .ac-footer-mark svg { width: 18px; height: 18px; }
.ac-footer-heading {
  color: #fff; font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 700;
}
.ac-footer-bottom { border-top: 1px solid rgba(255, 255, 255, .12); color: #90aec6; font-size: .875rem; }

/* ---------- Legal / policy pages ---------- */
.ac-legal h2 {
  font-size: 1.15rem;
  margin: 2rem 0 .6rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--ac-border);
}
.ac-legal h2:first-of-type { border-top: 0; padding-top: 0; }
.ac-legal ul { padding-left: 1.2rem; }
.ac-legal li { margin-bottom: .5rem; line-height: 1.6; }
.ac-legal p { color: #2c3a48; }

/* ---------- Utilities ---------- */
.ac-bg-soft { background: var(--ac-surface); }
.ac-shadow { box-shadow: var(--ac-shadow-md); }
.ac-rounded { border-radius: var(--ac-radius); }
.ac-maxw-prose { max-width: 42rem; }