/* EDU — Unified button system (platform-wide) */

:root {
  --edu-btn-h: 44px;
  --edu-btn-h-sm: 36px;
  --edu-btn-h-lg: 48px;
  --edu-btn-px: 18px;
  --edu-btn-radius: 12px;
  --edu-btn-font: 14px;
  --edu-btn-weight: 800;
  --edu-btn-primary-bg: var(--brand, #0B1426);
  --edu-btn-primary-hover: var(--brand-dark, #152238);
  --edu-btn-primary-fg: #fff;
  --edu-btn-secondary-bg: #f8fafc;
  --edu-btn-secondary-fg: #1e293b;
  --edu-btn-secondary-border: #e2e8f0;
  --edu-btn-shadow: 0 4px 14px rgba(11, 20, 38, 0.16);
  --edu-btn-transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease, transform 0.12s ease;
}

.edu-parent-mode {
  --edu-btn-primary-bg: #0B1426;
  --edu-btn-primary-hover: #152238;
  --edu-btn-shadow: 0 4px 14px rgba(11, 20, 38, 0.18);
}

.edu-trainer-mode {
  --edu-btn-primary-bg: #152238;
  --edu-btn-primary-hover: #152238;
  --edu-btn-shadow: 0 4px 14px rgba(11, 20, 38, 0.2);
}

.edu-child-mode {
  --edu-btn-primary-bg: #0ea5e9;
  --edu-btn-primary-hover: #0284c7;
  --edu-btn-shadow: 0 4px 14px rgba(14, 165, 233, 0.2);
}

.edu-student-mode {
  --edu-btn-primary-bg: #0B1426;
  --edu-btn-primary-hover: #152238;
}

.edu-company-mode {
  --edu-btn-primary-bg: #0B1426;
  --edu-btn-primary-hover: #152238;
}

/* —— Base —— */

.edu-btn,
button.edu-btn,
a.edu-btn,
input.edu-btn[type="submit"],
input.edu-btn[type="button"] {
  min-height: var(--edu-btn-h);
  padding: 0 var(--edu-btn-px);
  border-radius: var(--edu-btn-radius);
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  font-weight: var(--edu-btn-weight);
  font-size: var(--edu-btn-font);
  font-family: inherit;
  line-height: 1.25;
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  box-sizing: border-box;
  transition: var(--edu-btn-transition);
  -webkit-tap-highlight-color: transparent;
}

.edu-btn--sm {
  min-height: var(--edu-btn-h-sm);
  padding: 0 14px;
  font-size: 12px;
  border-radius: 10px;
}

.edu-btn--lg {
  min-height: var(--edu-btn-h-lg);
  padding: 0 22px;
  font-size: 15px;
}

.edu-btn--block {
  width: 100%;
}

.edu-btn i,
.edu-btn svg {
  flex-shrink: 0;
  font-size: 1em;
}

/* —— Primary (panels, forms, light surfaces) —— */

.edu-btn.primary,
button.edu-btn.primary,
a.edu-btn.primary {
  background: var(--edu-btn-primary-bg);
  color: var(--edu-btn-primary-fg);
  border-color: var(--edu-btn-primary-bg);
  box-shadow: var(--edu-btn-shadow);
}

.edu-btn.primary:hover,
button.edu-btn.primary:hover,
a.edu-btn.primary:hover {
  background: var(--edu-btn-primary-hover);
  border-color: var(--edu-btn-primary-hover);
  color: #fff;
}

.edu-btn.primary:focus-visible,
.edu-btn.secondary:focus-visible,
.edu-lang-switch-btn:focus-visible,
.auth-submit-pro:focus-visible {
  outline: 2px solid var(--edu-btn-primary-bg);
  outline-offset: 2px;
}

.edu-btn.primary:active,
.edu-btn.secondary:active {
  transform: scale(0.98);
}

.edu-btn:disabled,
.edu-btn[disabled],
.edu-btn.is-disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
  transform: none;
  box-shadow: none;
}

/* —— Secondary (panels, forms) —— */

.edu-btn.secondary,
button.edu-btn.secondary,
a.edu-btn.secondary {
  background: var(--edu-btn-secondary-bg);
  color: var(--edu-btn-secondary-fg);
  border: 1px solid var(--edu-btn-secondary-border);
  box-shadow: none;
}

.edu-btn.secondary:hover,
button.edu-btn.secondary:hover,
a.edu-btn.secondary:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: #0f172a;
}

/* —— Hero surfaces (white primary + glass secondary) —— */

.edu-hero .edu-btn.primary,
.parent-hero .edu-btn.primary,
.trainer-hero .edu-btn.primary,
.child-hero .edu-btn.primary,
.student-hero .edu-btn.primary,
.edu-hero-content .edu-btn.primary {
  background: #fff;
  color: var(--edu-btn-primary-bg);
  border-color: #fff;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.14);
}

.edu-hero .edu-btn.primary:hover,
.parent-hero .edu-btn.primary:hover,
.trainer-hero .edu-btn.primary:hover,
.child-hero .edu-btn.primary:hover,
.student-hero .edu-btn.primary:hover,
.edu-hero-content .edu-btn.primary:hover {
  background: #f8fafc;
  color: var(--edu-btn-primary-hover);
  border-color: #f8fafc;
}

.edu-hero .edu-btn.secondary,
.parent-hero .edu-btn.secondary,
.trainer-hero .edu-btn.secondary,
.child-hero .edu-btn.secondary,
.student-hero .edu-btn.secondary,
.edu-hero-content .edu-btn.secondary {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.32);
  backdrop-filter: blur(8px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.edu-hero .edu-btn.secondary:hover,
.parent-hero .edu-btn.secondary:hover,
.trainer-hero .edu-btn.secondary:hover,
.child-hero .edu-btn.secondary:hover,
.student-hero .edu-btn.secondary:hover,
.edu-hero-content .edu-btn.secondary:hover {
  background: rgba(255, 255, 255, 0.24);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.42);
}

/* Web: keep hero buttons on brand heroes (override role web flat rules) */

html.edu-view-web .edu-parent-mode .parent-hero .edu-btn.primary,
html.edu-view-web .edu-trainer-mode .trainer-hero .edu-btn.primary,
html.edu-view-web .edu-child-mode .child-hero .edu-btn.primary,
html.edu-view-web .edu-student-mode .student-hero .edu-btn.primary,
html.edu-view-web .edu-web-content .edu-hero .edu-btn.primary {
  background: #fff;
  color: var(--edu-btn-primary-bg);
  border-color: #fff;
}

html.edu-view-web .edu-parent-mode .parent-hero .edu-btn.secondary,
html.edu-view-web .edu-trainer-mode .trainer-hero .edu-btn.secondary,
html.edu-view-web .edu-child-mode .child-hero .edu-btn.secondary,
html.edu-view-web .edu-student-mode .student-hero .edu-btn.secondary,
html.edu-view-web .edu-web-content .edu-hero .edu-btn.secondary {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.32);
}

/* —— Action rows —— */

.edu-hero-actions,
.trainer-hero-actions,
.edu-btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.edu-home-app .edu-hero-actions,
.edu-parent-mode .parent-hero .edu-hero-actions,
.trainer-hero-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  width: 100%;
}

/* —— Language switch (matches button system) —— */

.edu-lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0;
  margin: 0;
  max-width: none;
}

.edu-lang-switch-btn {
  min-width: 40px;
  min-height: var(--edu-btn-h-sm);
  height: var(--edu-btn-h-sm);
  padding: 0 12px;
  border-radius: var(--edu-btn-radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 12px;
  font-weight: var(--edu-btn-weight);
  color: var(--edu-btn-secondary-fg);
  background: var(--edu-btn-secondary-bg);
  border: 1px solid var(--edu-btn-secondary-border);
  box-shadow: none;
  transition: var(--edu-btn-transition);
}

.edu-lang-switch-btn:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

.edu-lang-switch-btn.is-active {
  background: var(--edu-btn-primary-bg);
  color: #fff;
  border-color: var(--edu-btn-primary-bg);
  box-shadow: var(--edu-btn-shadow);
}

html.edu-view-web .edu-web-header__actions .edu-lang-switch-btn {
  min-height: 38px;
  height: 38px;
}

/* —— Auth submit —— */

.auth-submit-pro {
  min-height: var(--edu-btn-h-lg);
  padding: 0 var(--edu-btn-px);
  border-radius: var(--edu-btn-radius);
  font-size: 15px;
  font-weight: var(--edu-btn-weight);
  background: var(--edu-btn-primary-bg, var(--brand));
  color: #fff;
  border: 1px solid var(--edu-btn-primary-bg, var(--brand));
  box-shadow: var(--edu-btn-shadow);
  transition: var(--edu-btn-transition);
  cursor: pointer;
}

.auth-submit-pro:hover {
  background: var(--edu-btn-primary-hover, var(--brand-dark));
  border-color: var(--edu-btn-primary-hover, var(--brand-dark));
}

.auth-submit-pro:active {
  transform: scale(0.98);
}

/* —— Web header auth buttons —— */

html.edu-view-web .edu-web-header__auth {
  min-height: 40px;
  padding: 0 16px;
  border-radius: var(--edu-btn-radius);
  font-size: 13px;
  font-weight: var(--edu-btn-weight);
}

/* —— Misc platform controls aligned to buttons —— */

.notification-filter button,
.course-tabs button {
  min-height: var(--edu-btn-h-sm);
  padding: 0 14px;
  border-radius: var(--edu-btn-radius);
  font-size: 12px;
  font-weight: var(--edu-btn-weight);
  font-family: inherit;
  border: 1px solid var(--edu-btn-secondary-border);
  background: var(--edu-btn-secondary-bg);
  color: var(--edu-btn-secondary-fg);
  cursor: pointer;
  transition: var(--edu-btn-transition);
}

.notification-filter button.active,
.course-tabs button.active {
  background: var(--edu-btn-primary-bg);
  color: #fff;
  border-color: var(--edu-btn-primary-bg);
}

.notification-filter button:hover:not(.active),
.course-tabs button:hover:not(.active) {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

.pwa-install-card button {
  min-height: var(--edu-btn-h);
  padding: 0 var(--edu-btn-px);
  border-radius: var(--edu-btn-radius);
  font-size: var(--edu-btn-font);
  font-weight: var(--edu-btn-weight);
  font-family: inherit;
  border: 1px solid var(--edu-btn-primary-bg);
  background: var(--edu-btn-primary-bg);
  color: #fff;
  cursor: pointer;
  transition: var(--edu-btn-transition);
}

.pwa-install-card button:hover {
  background: var(--edu-btn-primary-hover);
  border-color: var(--edu-btn-primary-hover);
}

.edu-child-mode .edu-lang-switch .edu-lang-dropdown__trigger,
.edu-parent-mode .edu-lang-switch .edu-lang-dropdown__trigger,
.edu-trainer-mode .edu-lang-switch .edu-lang-dropdown__trigger,
.edu-student-mode .edu-lang-switch .edu-lang-dropdown__trigger {
  min-height: var(--edu-btn-h-sm);
  height: var(--edu-btn-h-sm);
  border-radius: var(--edu-btn-radius);
  font-weight: var(--edu-btn-weight);
  background: var(--edu-btn-secondary-bg);
  border: 1px solid var(--edu-btn-secondary-border);
  color: var(--edu-btn-secondary-fg);
  box-shadow: none;
}

.edu-child-mode .edu-lang-dropdown.is-open .edu-lang-dropdown__trigger,
.edu-parent-mode .edu-lang-dropdown.is-open .edu-lang-dropdown__trigger,
.edu-trainer-mode .edu-lang-dropdown.is-open .edu-lang-dropdown__trigger,
.edu-student-mode .edu-lang-dropdown.is-open .edu-lang-dropdown__trigger {
  border-color: var(--edu-btn-primary-bg);
  box-shadow: var(--edu-btn-shadow);
}

/* Account settings — platform purple on all roles (overrides company/parent black) */
.settings-app .settings-app__btn--primary,
.edu-company-mode .settings-app .settings-app__btn--primary,
.edu-parent-mode .settings-app .settings-app__btn--primary,
.settings-app .edu-btn.primary,
.edu-company-mode .settings-app .edu-btn.primary,
.edu-parent-mode .settings-app .edu-btn.primary,
.edu-student-mode .settings-app .edu-btn.primary {
  background: #0B1426;
  border-color: #0B1426;
  color: #fff;
  box-shadow: 0 4px 14px rgba(11, 20, 38, 0.16);
}

.settings-app .settings-app__btn--primary:hover,
.edu-company-mode .settings-app .settings-app__btn--primary:hover,
.edu-parent-mode .settings-app .settings-app__btn--primary:hover,
.settings-app .edu-btn.primary:hover,
.edu-company-mode .settings-app .edu-btn.primary:hover,
.edu-parent-mode .settings-app .edu-btn.primary:hover,
.edu-student-mode .settings-app .edu-btn.primary:hover {
  background: #152238;
  border-color: #152238;
  color: #fff;
}

@media (max-width: 720px) {
  .edu-btn,
  button.edu-btn,
  a.edu-btn {
    min-height: 42px;
    font-size: 13px;
  }

  .edu-home-app .edu-hero-actions,
  .edu-parent-mode .parent-hero .edu-hero-actions,
  .trainer-hero-actions {
    grid-template-columns: 1fr;
  }
}