/* Design tokens from дизайн.md (stage 6). Do not invent new colours here. */
:root {
  --pmp-primary: #1F5EA8;
  --pmp-primary-hover: #184C8A;
  --pmp-bg: #FFFFFF;
  --pmp-bg-secondary: #F1F4F7;
  --pmp-accent-soft: #EEF4FB;
  --pmp-text: #1F2933;
  --pmp-text-muted: #5F6B7A;
  --pmp-error: #B42318;
  --pmp-error-bg: #FDEEEC;
  --pmp-success: #1E7A46;
  --pmp-success-bg: #EAF5EE;
  --pmp-partial: #9A5B00;
  --pmp-partial-bg: #FDF4E6;
  --pmp-border: #DDE2E8;
  --pmp-input-border: #8A96A3;
  --pmp-secondary-border: #C5CDD6;
  --pmp-focus-ring: 0 0 0 3px rgba(31, 94, 168, .25);
  --pmp-input-focus-ring: 0 0 0 3px rgba(31, 94, 168, .20);
  --pmp-modal-shadow: 0 8px 24px rgba(16, 24, 40, .12);

  --pmp-space-xs: 4px;
  --pmp-space-sm: 8px;
  --pmp-space-md: 16px;
  --pmp-space-lg: 24px;
  --pmp-space-xl: 40px;

  --pmp-radius-btn: 8px;
  --pmp-radius-card: 12px;
  --pmp-radius-input: 8px;
  --pmp-radius-modal: 16px;

  --pmp-fast: 150ms;
  --pmp-appear: 200ms;

  /* Bootstrap variables mapped to the tokens */
  --bs-body-font-family: "Inter", system-ui, "Segoe UI", sans-serif;
  --bs-body-font-size: 17px;
  --bs-body-line-height: 28px;
  --bs-body-color: var(--pmp-text);
  --bs-body-bg: var(--pmp-bg);
  --bs-border-color: var(--pmp-border);
  --bs-primary: var(--pmp-primary);
  --bs-primary-rgb: 31, 94, 168;
  --bs-link-color: var(--pmp-primary);
  --bs-link-hover-color: var(--pmp-primary-hover);
  --bs-secondary-color: var(--pmp-text-muted);
}

body {
  background: var(--pmp-bg);
  color: var(--pmp-text);
  font-family: var(--bs-body-font-family);
  font-size: 17px;
  line-height: 28px;
  font-weight: 400;
}

h1, .h1 { font-size: 28px; line-height: 36px; font-weight: 600; }
h2, .h2 { font-size: 22px; line-height: 32px; font-weight: 500; }
h3, .h3 { font-size: 18px; line-height: 26px; font-weight: 600; }
.pmp-label, .form-label { font-size: 14px; line-height: 20px; font-weight: 500; }
.text-muted, .pmp-muted { color: var(--pmp-text-muted) !important; }

/* Layout */
.pmp-header {
  border-bottom: 1px solid var(--pmp-border);
  padding: var(--pmp-space-md) 0;
}
.pmp-brand { font-weight: 600; color: var(--pmp-text); text-decoration: none; }
.pmp-main { padding: var(--pmp-space-xl) 0; }
.pmp-container { max-width: 760px; margin: 0 auto; padding: 0 var(--pmp-space-md); }

/* Cards */
.pmp-card {
  background: var(--pmp-bg);
  border: 1px solid var(--pmp-border);
  border-radius: var(--pmp-radius-card);
  padding: var(--pmp-space-lg);
  box-shadow: none;
}
@media (max-width: 576px) {
  .pmp-card { padding: var(--pmp-space-md); }
  .pmp-main { padding: var(--pmp-space-lg) 0; }
}

/* Buttons: height 48px, one primary per screen */
.btn {
  min-height: 48px;
  font-size: 16px;
  line-height: 24px;
  font-weight: 500;
  border-radius: var(--pmp-radius-btn);
  padding: 11px 20px; /* 11 + 24 + 11 + 1px border each side = 48px */
  box-shadow: none;
  transition: background-color var(--pmp-fast) ease-out, transform var(--pmp-fast) ease-out,
              border-color var(--pmp-fast) ease-out;
}
.btn:focus-visible { box-shadow: var(--pmp-focus-ring); outline: none; }
.btn:disabled, .btn.disabled { --bs-btn-disabled-opacity: .45; opacity: .45; }
.btn-primary {
  --bs-btn-bg: var(--pmp-primary); --bs-btn-border-color: var(--pmp-primary); --bs-btn-color: #FFFFFF;
  --bs-btn-hover-bg: var(--pmp-primary-hover); --bs-btn-hover-border-color: var(--pmp-primary-hover); --bs-btn-hover-color: #FFFFFF;
  --bs-btn-active-bg: var(--pmp-primary-hover); --bs-btn-active-border-color: var(--pmp-primary-hover); --bs-btn-active-color: #FFFFFF;
  --bs-btn-disabled-bg: var(--pmp-primary); --bs-btn-disabled-border-color: var(--pmp-primary); --bs-btn-disabled-color: #FFFFFF;
  --bs-btn-focus-shadow-rgb: 31, 94, 168;
}
.btn-secondary {
  --bs-btn-bg: var(--pmp-bg); --bs-btn-border-color: var(--pmp-secondary-border); --bs-btn-color: var(--pmp-text);
  --bs-btn-hover-bg: var(--pmp-bg-secondary); --bs-btn-hover-border-color: var(--pmp-secondary-border); --bs-btn-hover-color: var(--pmp-text);
  --bs-btn-active-bg: var(--pmp-bg-secondary); --bs-btn-active-border-color: var(--pmp-secondary-border); --bs-btn-active-color: var(--pmp-text);
  --bs-btn-disabled-bg: var(--pmp-bg); --bs-btn-disabled-border-color: var(--pmp-secondary-border); --bs-btn-disabled-color: var(--pmp-text);
}
.btn-ghost {
  --bs-btn-bg: transparent; --bs-btn-border-color: transparent; --bs-btn-color: var(--pmp-primary);
  --bs-btn-hover-bg: var(--pmp-accent-soft); --bs-btn-hover-border-color: transparent; --bs-btn-hover-color: var(--pmp-primary);
  --bs-btn-active-bg: var(--pmp-accent-soft); --bs-btn-active-color: var(--pmp-primary);
  padding: 8px 12px;
}
.btn-danger {
  --bs-btn-bg: var(--pmp-error); --bs-btn-border-color: var(--pmp-error); --bs-btn-color: #FFFFFF;
  --bs-btn-hover-bg: var(--pmp-error); --bs-btn-hover-border-color: var(--pmp-error); --bs-btn-hover-color: #FFFFFF;
}
.btn-primary:hover, .btn-secondary:hover, .btn-ghost:hover { transform: translateY(-1px); }
.btn:disabled:hover, .btn.disabled:hover { transform: none; }

/* Inputs */
.form-control {
  min-height: 48px;
  border: 1px solid var(--pmp-input-border);
  border-radius: var(--pmp-radius-input);
  font-size: 17px;
  color: var(--pmp-text);
}
.form-control::placeholder { color: var(--pmp-text-muted); }
.form-control:focus { border-color: var(--pmp-primary); box-shadow: var(--pmp-input-focus-ring); }
.form-control.is-invalid { border-color: var(--pmp-error); }
.invalid-feedback { color: var(--pmp-error); font-size: 14px; }

/* Sign in pages (prototype screens 1 and 7) */
.pmp-auth { max-width: 400px; margin: 0 auto; padding: 12vh var(--pmp-space-md) var(--pmp-space-xl); }
.pmp-auth-title { font-size: 28px; line-height: 36px; font-weight: 600; margin-bottom: var(--pmp-space-xs); }
.form-check-input { width: 20px; height: 20px; margin-top: 4px; border-color: var(--pmp-input-border); }
.form-check-input:checked { background-color: var(--pmp-primary); border-color: var(--pmp-primary); }
.form-check-input:focus { box-shadow: var(--pmp-input-focus-ring); border-color: var(--pmp-primary); }
.form-check-label { padding-left: var(--pmp-space-xs); }

/* Show / hide password */
.pmp-password { position: relative; }
.pmp-password .form-control { padding-right: 52px; }
.pmp-password-toggle { position: absolute; top: 0; right: 0; width: 48px; height: 48px; display: flex; align-items: center;
  justify-content: center; border: 0; background: transparent; color: var(--pmp-text-muted); border-radius: var(--pmp-radius-input);
  cursor: pointer; transition: color var(--pmp-fast) ease-out; }
.pmp-password-toggle[hidden] { display: none; }
.pmp-password-toggle:hover { color: var(--pmp-primary); }
.pmp-password-toggle:focus-visible { outline: none; box-shadow: var(--pmp-focus-ring); }
.pmp-password-toggle .pmp-eye-hide, .pmp-password-toggle.is-visible .pmp-eye-show { display: none; }
.pmp-password-toggle.is-visible .pmp-eye-hide { display: block; }
.pmp-password .form-control.is-invalid { background-image: none; }

/* Messages */
.pmp-alert { display: flex; gap: var(--pmp-space-sm); align-items: flex-start; border-radius: var(--pmp-radius-input);
  padding: 12px var(--pmp-space-md); font-size: 15px; line-height: 22px; border: 1px solid; }
.pmp-alert .pmp-icon { flex: 0 0 auto; margin-top: 1px; }
.pmp-alert-error { color: var(--pmp-error); background: var(--pmp-error-bg); border-color: var(--pmp-error); }
.pmp-alert-info { color: var(--pmp-primary); background: var(--pmp-accent-soft); border-color: var(--pmp-primary); }

/* Top bar with the student menu */
.pmp-topbar { display: flex; align-items: center; justify-content: space-between; gap: var(--pmp-space-md); flex-wrap: wrap; }
.pmp-nav { display: flex; align-items: center; gap: var(--pmp-space-md); font-size: 15px; }
.pmp-nav a, .pmp-nav-link { color: var(--pmp-text-muted); text-decoration: none; background: none; border: 0; padding: 0;
  font: inherit; cursor: pointer; }
.pmp-nav a:hover, .pmp-nav-link:hover { color: var(--pmp-primary); }
.pmp-nav a.active { color: var(--pmp-text); font-weight: 600; }
.pmp-nav form { margin: 0; }

/* Practice screen */
.pmp-status { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--pmp-space-md);
  font-size: 15px; }
.pmp-status-position { font-weight: 600; }
.pmp-question { margin-bottom: var(--pmp-space-sm); }
.pmp-hint { color: var(--pmp-text-muted); font-weight: 600; }
.pmp-options { display: grid; gap: var(--pmp-space-sm); border: 0; padding: 0; margin: 0; min-width: 0; }
.pmp-option { display: flex; align-items: flex-start; gap: 12px; padding: 12px var(--pmp-space-md);
  border: 1px solid var(--pmp-border); border-radius: var(--pmp-radius-card); background: var(--pmp-bg);
  cursor: pointer; transition: border-color var(--pmp-fast) ease-out, background-color var(--pmp-fast) ease-out; }
.pmp-option:hover { border-color: var(--pmp-input-border); }
.pmp-option:has(input:checked) { border-color: var(--pmp-primary); background: var(--pmp-accent-soft); }
.pmp-option:has(input:focus-visible) { box-shadow: var(--pmp-focus-ring); }
.pmp-option input { margin-top: 5px; width: 18px; height: 18px; flex: 0 0 auto; accent-color: var(--pmp-primary); }
.pmp-option-letter { font-weight: 600; min-width: 1.2em; }
.pmp-option-text { flex: 1; }
.pmp-option-tag { display: block; font-size: 14px; line-height: 20px; font-weight: 500; margin-top: 2px; }
.pmp-options:disabled .pmp-option { cursor: default; }
.is-answered .pmp-option, .is-answered .pmp-option:hover { cursor: default; border-color: var(--pmp-border); background: var(--pmp-bg); }
.is-answered .pmp-option.is-correct { border-color: var(--pmp-success); background: var(--pmp-success-bg); }
.is-answered .pmp-option.is-correct .pmp-option-tag { color: var(--pmp-success); }
.is-answered .pmp-option.is-wrong { border-color: var(--pmp-error); background: var(--pmp-error-bg); }
.is-answered .pmp-option.is-wrong .pmp-option-tag { color: var(--pmp-error); }
.is-answered input { accent-color: var(--pmp-text-muted); }
.pmp-submit-row { display: flex; align-items: center; gap: var(--pmp-space-md); flex-wrap: wrap; margin-top: var(--pmp-space-md); }
.pmp-checking { display: none; margin-top: var(--pmp-space-md); }
.pmp-checking.htmx-request, .htmx-request .pmp-checking { display: block; }
.pmp-save-error { align-items: center; }
.pmp-save-error[hidden] { display: none; }

.pmp-result { margin: var(--pmp-space-lg) 0 var(--pmp-space-md); padding: 12px var(--pmp-space-md);
  border-radius: var(--pmp-radius-card); border: 1px solid; animation: pmp-appear var(--pmp-appear) ease-out; }
.pmp-result-title { display: flex; align-items: center; gap: var(--pmp-space-sm); font-size: 18px; line-height: 26px; font-weight: 600; }
.pmp-result-correct { color: var(--pmp-success); background: var(--pmp-success-bg); border-color: var(--pmp-success); }
.pmp-result-partial { color: var(--pmp-partial); background: var(--pmp-partial-bg); border-color: var(--pmp-partial); }
.pmp-result-incorrect { color: var(--pmp-error); background: var(--pmp-error-bg); border-color: var(--pmp-error); }
.pmp-explanation { margin-bottom: var(--pmp-space-lg); animation: pmp-appear var(--pmp-appear) ease-out; }
.pmp-pdf-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 500; }
@keyframes pmp-appear { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* Daily goal, round completed, progress */
.pmp-today { font-size: 15px; }
.pmp-goal-bar { height: 4px; background: var(--pmp-bg-secondary); border-radius: 2px; overflow: hidden; margin: -8px 0 var(--pmp-space-lg); }
.pmp-goal-bar > span { display: block; height: 100%; background: var(--pmp-primary); }
.pmp-round { padding: var(--pmp-space-lg) 0; }
.pmp-round form { margin: 0; }
.pmp-progress-head { display: flex; justify-content: space-between; gap: var(--pmp-space-md); flex-wrap: wrap; margin-bottom: 12px; }
.pmp-progress-bar { height: 8px; border-radius: 4px; margin: 0; }
.pmp-stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--pmp-space-md); }
.pmp-stat-value { font-size: 28px; line-height: 36px; font-weight: 600; margin: 2px 0; }
.pmp-stat-date { font-size: 22px; line-height: 36px; }
@media (max-width: 480px) { .pmp-stats { grid-template-columns: minmax(0, 1fr); } }

/* Window over the page (Daily goal completed) */
.pmp-modal { position: fixed; inset: 0; z-index: 1050; display: flex; align-items: center; justify-content: center; padding: var(--pmp-space-md); }
.pmp-modal-backdrop { position: absolute; inset: 0; background: rgba(16, 24, 40, .45); }
.pmp-modal-dialog { position: relative; background: var(--pmp-bg); border-radius: var(--pmp-radius-modal); box-shadow: var(--pmp-modal-shadow);
  padding: var(--pmp-space-lg); max-width: 480px; width: 100%; animation: pmp-appear var(--pmp-appear) ease-out; }
.pmp-modal-icon { color: var(--pmp-success); margin-bottom: var(--pmp-space-sm); }

/* Icons (Lucide style, outline 1.5) */
.pmp-icon { width: 20px; height: 20px; stroke: currentColor; stroke-width: 1.5; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.pmp-icon-lg { width: 48px; height: 48px; }

.pmp-state { text-align: center; padding: var(--pmp-space-xl) var(--pmp-space-md); }
.pmp-state .pmp-icon-lg { color: var(--pmp-text-muted); margin-bottom: var(--pmp-space-md); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .btn:hover { transform: none; }
}