/* ==========================================================================
   Authenticated application shell (student portal + instructor dashboard).

   Deliberately denser and plainer than the public showcase: this surface is for
   getting work done, and the master plan asks for obvious status over
   decorative UI.
   ========================================================================== */

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--surface-muted);
}

.app-header {
  background: var(--brand-ink-strong);
  color: var(--text-inverse);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.app-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  padding-block: var(--space-3);
  flex-wrap: wrap;
}

/* Plain links in the dark header use the inverse text colour. Buttons must
   keep their own, so they are excluded here AND restated below: `.app-header a`
   would otherwise out-specify `.btn--secondary` and render a white label on a
   white button. */
.app-header a:not(.btn) {
  color: var(--text-inverse);
}

.app-header .btn--secondary {
  color: var(--brand-ink);
}

.app-header .btn--primary {
  color: var(--text-inverse);
}

.app-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  line-height: 1.2;
}

/* Official Olivet University crest, cropped from the supplied header asset. */
.app-brand__crest {
  height: 2.2rem;
  width: auto;
}

.app-brand__text {
  display: inline-flex;
  flex-direction: column;
}

.app-brand strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
}

.app-brand__text > span {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.7;
}

.app-nav {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

.app-nav a {
  text-decoration: none;
  opacity: 0.8;
  padding-block: var(--space-1);
  border-bottom: 2px solid transparent;
}

.app-nav a:hover,
.app-nav a[aria-current="page"] {
  opacity: 1;
  border-bottom-color: var(--brand-gold);
}

.app-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.85rem;
}

.app-user__name {
  opacity: 0.85;
}

.app-main {
  flex: 1;
  padding-block: var(--space-6) var(--space-8);
}

.app-page-head {
  margin-bottom: var(--space-6);
}

.app-page-head h1 {
  font-size: clamp(1.6rem, 1.3rem + 1vw, 2.1rem);
  margin-bottom: var(--space-2);
}

.app-page-head p {
  color: var(--text-muted);
  margin: 0;
}

.app-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding-block: var(--space-4);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Panels and stats
   -------------------------------------------------------------------------- */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.panel + .panel {
  margin-top: var(--space-5);
}

.panel__head {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  background: var(--surface-muted);
}

.panel__head h2,
.panel__head h3 {
  margin: 0;
  font-size: 1rem;
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0;
}

.panel__body {
  padding: var(--space-5);
}

.panel__body > :last-child {
  margin-bottom: 0;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
}

.stat__value {
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1.1;
  color: var(--brand-ink-strong);
}

.stat__label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-top: var(--space-1);
}

.app-columns {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr);
  align-items: start;
}

@media (max-width: 900px) {
  .app-columns {
    grid-template-columns: 1fr;
  }
}

/* --------------------------------------------------------------------------
   Capability list - "what may I do, and why"
   -------------------------------------------------------------------------- */
.capability-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.capability {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-2) var(--space-3);
  align-items: start;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border);
}

.capability:last-child {
  border-bottom: 0;
}

.capability__name {
  font-weight: 600;
  grid-column: 2;
}

.capability__reason {
  grid-column: 2;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.capability__mark {
  grid-row: 1 / span 2;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  font-weight: 700;
}

.capability__mark--yes {
  background: var(--ok-soft);
  color: var(--ok);
}

.capability__mark--no {
  background: var(--danger-soft);
  color: var(--danger);
}

/* --------------------------------------------------------------------------
   Authentication pages
   -------------------------------------------------------------------------- */
.auth-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: var(--space-6);
  background: var(--surface-muted);
}

.auth-card {
  width: min(100%, 420px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
}

.auth-card__brand {
  text-align: center;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--border);
}

.auth-card__brand strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--brand-ink-strong);
}

.auth-card__brand span {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.auth-card form {
  display: grid;
  gap: var(--space-4);
}

.auth-card .btn {
  justify-content: center;
  width: 100%;
}

.auth-card__foot {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
}

/* --------------------------------------------------------------------------
   Error pages
   -------------------------------------------------------------------------- */
.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: var(--space-8) var(--space-5);
}

.error-page__code {
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--border-strong);
  line-height: 1;
  margin-bottom: var(--space-4);
}

/* --------------------------------------------------------------------------
   Development-only banner
   -------------------------------------------------------------------------- */
.env-banner {
  background: var(--warn-soft);
  color: var(--warn);
  border-bottom: 1px solid rgba(138, 91, 0, 0.25);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-align: center;
  padding: var(--space-2);
}


/* --------------------------------------------------------------------------
   Submission workspace (Phase 3)
   -------------------------------------------------------------------------- */

/* Section list on the project workspace. The left mark repeats the badge in a
   non-colour channel, so status is readable without relying on hue. */
.section-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-2);
}

.section-list__item a {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  background: var(--surface);
}

.section-list__item a:hover {
  border-color: var(--brand-ink);
}

.section-list__mark {
  flex: 0 0 1.5rem;
  height: 1.5rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-size: 0.85rem;
  background: var(--surface-muted);
  color: var(--text-muted);
}

.section-list__item--complete .section-list__mark {
  background: var(--ok-soft, #e6f4ea);
  color: var(--ok, #1e7b34);
}

.section-list__body {
  flex: 1 1 auto;
  display: grid;
  gap: 2px;
  min-width: 0;
}

.section-list__help {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Readiness bar. */
.progress {
  height: 0.6rem;
  border-radius: 999px;
  background: var(--surface-muted);
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  background: var(--brand-ink);
  border-radius: 999px;
  transition: width 0.2s ease;
}

/* Formset rows. The grid keeps a twelve-field row readable without a table,
   which would not wrap on a phone. */
.field-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
}

.field-grid .field + .field {
  margin-top: 0;
}

.field--check {
  align-self: end;
}

.field__check {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 500;
  cursor: pointer;
}

.field__check input {
  width: auto;
  margin: 0;
}

.field__check--danger span {
  color: var(--danger);
}

.formset-row + .formset-row {
  margin-top: var(--space-4);
}

/* Footer navigation between sections. */
.section-jump {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
}

.section-jump span[aria-current="page"] {
  color: var(--text-muted);
  font-weight: 600;
}

/* Responsive YouTube embed. */
.video-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
}

.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

@media (max-width: 640px) {
  .section-list__item a {
    flex-wrap: wrap;
  }
}

/* --------------------------------------------------------------------------
   Runtime secret entry (Phase 4)
   -------------------------------------------------------------------------- */
.secret-list {
  display: grid;
  gap: var(--space-4);
}

.secret-row {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  background: var(--surface);
}

.secret-row__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-2);
}

.secret-row__name {
  font-weight: 600;
  margin-right: var(--space-2);
}

.secret-row__purpose {
  margin: 0 0 var(--space-2);
  color: var(--text-muted);
  font-size: 0.92rem;
}

.secret-row__form {
  display: flex;
  align-items: flex-end;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-3);
}