:root {
  --pwa-primary: #155aa6;
  --pwa-primary-deep: #0f3d73;
  --pwa-bg: #fffaf4;
  --pwa-text: #172033;
  --pwa-muted: #667085;
  --pwa-shadow: 0 18px 44px rgba(15, 61, 115, 0.22);
}

html {
  min-height: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100%;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
  -webkit-tap-highlight-color: rgba(21, 90, 166, 0.16);
  touch-action: manipulation;
}

button,
a,
input,
select,
textarea {
  -webkit-tap-highlight-color: rgba(21, 90, 166, 0.16);
}

@media (display-mode: standalone) {
  html {
    height: 100%;
    overscroll-behavior-y: none;
  }

  body {
    min-height: 100dvh;
    overscroll-behavior-y: none;
    user-select: none;
  }

  input,
  textarea,
  [contenteditable="true"] {
    user-select: text;
  }

  .student-app,
  .container {
    min-height: 100dvh;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
  }

  .student-topbar,
  .admin-topbar {
    top: max(6px, env(safe-area-inset-top));
  }
}

.pwa-standalone .student-section,
.pwa-standalone .admin-section,
.pwa-standalone .section {
  animation: pwaPanelIn 180ms ease-out !important;
}

.pwa-login body,
body.pwa-login-body {
  min-height: 100dvh;
  background: radial-gradient(circle at top, rgba(21, 90, 166, 0.14), transparent 36%), var(--pwa-bg);
}

body.pwa-login-body .site-wrap {
  min-height: 100dvh;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
}

body.pwa-login-body .header,
body.pwa-login-body .footer {
  display: none !important;
}

body.pwa-login-body main {
  min-height: 100dvh;
  display: grid;
  align-items: center;
}

body.pwa-login-body .login-section {
  width: min(calc(100% - 28px), 480px);
  padding: 24px 0;
}

body.pwa-login-body .login-card {
  padding: 22px;
  border-radius: 22px;
  box-shadow: 0 18px 44px rgba(15, 61, 115, 0.14);
}

body.pwa-login-body .section-title {
  text-align: center;
}

body.pwa-login-body .section-title::before {
  content: "";
  display: block;
  width: 76px;
  height: 76px;
  margin: 0 auto 14px;
  border-radius: 22px;
  background: url("/images/logo-160.jpg") center / cover no-repeat;
  box-shadow: 0 12px 28px rgba(15, 61, 115, 0.18);
}

body.pwa-login-body .section-title h1 {
  font-size: clamp(1.8rem, 8vw, 2.35rem);
}

body.pwa-login-body .login-form input,
body.pwa-login-body .login-form button {
  min-height: 50px;
}

@keyframes pwaPanelIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .pwa-standalone .student-section,
  .pwa-standalone .admin-section,
  .pwa-standalone .section {
    animation: none !important;
  }
}

.pwa-install-card {
  display: none;
  align-items: center;
  gap: 14px;
  width: min(100%, 560px);
  margin-top: 18px;
  padding: 14px;
  border: 1px solid rgba(21, 90, 166, 0.14);
  border-radius: 22px;
  color: var(--pwa-text);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 244, 231, 0.9)),
    #ffffff;
  box-shadow: 0 16px 38px rgba(15, 61, 115, 0.12);
}

.pwa-install-card:has(.pwa-install.is-visible) {
  display: flex;
}

.pwa-install-card strong,
.pwa-install-card span {
  display: block;
}

.pwa-install-card strong {
  font: 900 1rem/1.2 "Outfit", "Poppins", system-ui, sans-serif;
}

.pwa-install-card > span {
  flex: 1 1 auto;
  min-width: 0;
  color: var(--pwa-muted);
  font: 700 0.9rem/1.45 "Inter", "Poppins", system-ui, sans-serif;
}

.pwa-whatsapp-fab {
  position: fixed;
  right: max(14px, env(safe-area-inset-right));
  bottom: max(14px, env(safe-area-inset-bottom));
  z-index: 1200;
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  color: #ffffff;
  background: linear-gradient(135deg, #1fae62, #0d8d4d);
  box-shadow: 0 16px 34px rgba(13, 141, 77, 0.28);
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.pwa-whatsapp-fab:hover,
.pwa-whatsapp-fab:focus-visible {
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 20px 42px rgba(13, 141, 77, 0.34);
}

.pwa-whatsapp-fab svg {
  width: 31px;
  height: 31px;
}

.auth-checking .pwa-whatsapp-fab {
  display: none;
}

.pwa-install {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  width: 100%;
  padding: 12px 14px;
  border: 0;
  border-radius: 16px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--pwa-primary), var(--pwa-primary-deep));
  font: 700 0.95rem/1.2 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  cursor: pointer;
  text-decoration: none;
}

.pwa-install.is-visible {
  display: inline-flex;
}

.pwa-install-card .pwa-install {
  flex: 0 0 auto;
  width: auto;
  padding-inline: 18px;
}

.pwa-install svg {
  flex: 0 0 auto;
}

.pwa-splash {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  place-items: center;
  padding: 24px;
  background: radial-gradient(circle at top, rgba(21, 90, 166, 0.14), transparent 38%), var(--pwa-bg);
  color: var(--pwa-text);
}

.pwa-splash.is-visible {
  display: grid;
}

.pwa-splash-card {
  display: grid;
  justify-items: center;
  gap: 14px;
  text-align: center;
}

.pwa-splash-card img {
  width: 96px;
  height: 96px;
  border-radius: 24px;
  box-shadow: 0 14px 34px rgba(15, 61, 115, 0.2);
}

.pwa-splash-card strong {
  font: 800 1.25rem/1.2 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.pwa-update-prompt {
  position: fixed;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  z-index: 2700;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  width: min(520px, calc(100vw - 32px));
  padding: 14px;
  border: 1px solid rgba(21, 90, 166, 0.14);
  border-radius: 22px;
  color: var(--pwa-text);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 24px 70px rgba(15, 61, 115, 0.24);
  opacity: 0;
  pointer-events: none;
  transform: translateY(16px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.pwa-update-prompt.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.pwa-update-copy {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.pwa-update-copy strong {
  font: 900 1rem/1.25 "Outfit", "Poppins", system-ui, sans-serif;
}

.pwa-update-copy span {
  color: var(--pwa-muted);
  font: 700 0.88rem/1.35 "Inter", "Poppins", system-ui, sans-serif;
}

.pwa-update-actions {
  display: flex;
  gap: 9px;
}

.pwa-update-actions button {
  min-height: 42px;
  padding: 0 14px;
  border: 0;
  border-radius: 14px;
  font-weight: 900;
  cursor: pointer;
}

.pwa-update-dismiss {
  color: var(--pwa-primary-deep);
  background: rgba(21, 90, 166, 0.1);
}

.pwa-update-now {
  color: #ffffff;
  background: linear-gradient(135deg, var(--pwa-primary), var(--pwa-primary-deep));
}

.pwa-update-now:disabled {
  opacity: 0.75;
  cursor: wait;
}

.pwa-splash-loader {
  width: 138px;
  height: 4px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(21, 90, 166, 0.14);
}

.pwa-splash-loader::before {
  content: "";
  display: block;
  width: 44%;
  height: 100%;
  border-radius: inherit;
  background: var(--pwa-primary);
  animation: pwaLoading 900ms ease-in-out infinite;
}

.vcc-app-loader {
  position: fixed;
  inset: 0;
  z-index: 2500;
  display: grid;
  place-items: center;
  padding: max(18px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(18px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
  color: var(--pwa-text);
  background:
    radial-gradient(circle at 50% 42%, rgba(21, 90, 166, 0.1), transparent 34%),
    radial-gradient(circle at 50% 58%, rgba(240, 120, 45, 0.1), transparent 36%),
    #fffaf4;
  opacity: 0;
  visibility: hidden;
  transition: opacity 260ms ease, visibility 260ms ease;
}

.vcc-app-loader.is-visible,
.auth-checking .vcc-app-loader {
  opacity: 1;
  visibility: visible;
}

.auth-checking .site-wrap,
.auth-checking .student-app,
.auth-checking .container {
  opacity: 0;
  pointer-events: none;
}

.vcc-app-loader-card {
  display: grid;
  justify-items: center;
  gap: 14px;
  width: min(100%, 280px);
  padding: 8px;
  text-align: center;
  background: transparent;
  box-shadow: none;
}

.vcc-loader-logo {
  position: relative;
  display: grid;
  place-items: center;
  width: 128px;
  height: 128px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 20px 54px rgba(15, 61, 115, 0.18);
}

.vcc-loader-ring {
  position: absolute;
  display: block;
  inset: -10px;
  border-radius: 50%;
  border: 4px solid transparent;
  pointer-events: none;
  transform-origin: 50% 50%;
  animation: spin 1.5s linear infinite !important;
  animation-play-state: running !important;
  will-change: transform;
}

.vcc-loader-ring-primary {
  border-top-color: var(--pwa-primary);
  border-right-color: var(--pwa-primary);
}

.vcc-loader-ring-secondary {
  inset: -18px;
  border-top-color: rgba(240, 120, 45, 0.72);
}

.vcc-loader-logo img {
  width: 92px;
  height: 92px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 8px rgba(255, 255, 255, 0.92);
}

.vcc-app-loader-card strong {
  margin-top: 12px;
  color: var(--pwa-primary-deep);
  font: 900 1.05rem/1.2 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.vcc-app-loader-card span {
  color: var(--pwa-muted);
  font: 600 0.92rem/1.4 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.vcc-loader-track {
  display: none;
}

.vcc-loader-track span {
  display: block;
  width: 44%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--pwa-primary), #f0782d);
  animation: pwaLoading 900ms ease-in-out infinite;
}

.vcc-toast-stack {
  position: fixed;
  top: max(16px, env(safe-area-inset-top));
  right: max(16px, env(safe-area-inset-right));
  z-index: 2600;
  display: grid;
  gap: 10px;
  width: min(360px, calc(100vw - 32px));
  pointer-events: none;
}

.vcc-toast {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 14px;
  border: 1px solid rgba(21, 90, 166, 0.12);
  border-radius: 18px;
  color: var(--pwa-text);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 18px 38px rgba(15, 61, 115, 0.16);
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 180ms ease, transform 180ms ease, border-color 180ms ease;
  pointer-events: auto;
}

.vcc-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.vcc-toast-error {
  border-color: rgba(209, 67, 67, 0.24);
}

.vcc-toast-success {
  border-color: rgba(31, 157, 98, 0.24);
}

.vcc-toast-warning {
  border-color: rgba(240, 120, 45, 0.3);
}

.vcc-toast-loading {
  border-color: rgba(21, 90, 166, 0.26);
}

.vcc-toast-loading::before {
  content: "";
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  margin-top: 2px;
  border: 2px solid rgba(21, 90, 166, 0.18);
  border-top-color: var(--pwa-primary);
  border-radius: 50%;
  animation: vccToastSpin 780ms linear infinite;
}

.vcc-toast span {
  min-width: 0;
  font-weight: 700;
  line-height: 1.45;
}

.vcc-toast button,
.vcc-modal-close {
  border: 0;
  cursor: pointer;
}

.vcc-toast button {
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  border-radius: 999px;
  color: var(--pwa-primary-deep);
  background: rgba(21, 90, 166, 0.08);
  font-weight: 900;
}

.vcc-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2550;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(16, 24, 39, 0.48);
  opacity: 0;
  visibility: hidden;
  transition: opacity 180ms ease, visibility 180ms ease;
}

.vcc-modal-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

.vcc-modal {
  position: relative;
  display: grid;
  gap: 16px;
  width: min(100%, 480px);
  max-height: min(760px, calc(100dvh - 36px));
  overflow: auto;
  padding: 22px;
  border-radius: 22px;
  color: var(--pwa-text);
  background: #ffffff;
  box-shadow: 0 24px 70px rgba(15, 61, 115, 0.22);
  transform: translateY(10px) scale(0.98);
  transition: transform 180ms ease;
}

.vcc-modal-overlay.is-visible .vcc-modal {
  transform: translateY(0) scale(1);
}

.vcc-modal h2 {
  margin: 0;
  padding-right: 34px;
  color: var(--pwa-text);
  font: 800 1.22rem/1.25 "Outfit", "Poppins", system-ui, sans-serif;
}

.vcc-modal-body {
  display: grid;
  gap: 12px;
  color: var(--pwa-muted);
  line-height: 1.6;
}

.vcc-modal-body p {
  margin: 0;
}

.vcc-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  color: var(--pwa-primary-deep);
  background: rgba(21, 90, 166, 0.08);
  font-weight: 900;
}

.vcc-modal-field {
  display: grid;
  gap: 8px;
  color: var(--pwa-text);
  font-weight: 800;
}

.vcc-modal-field input,
.vcc-modal-field textarea,
.vcc-modal-select {
  width: 100%;
  min-height: 46px;
  padding: 11px 12px;
  border: 1px solid rgba(16, 24, 39, 0.14);
  border-radius: 14px;
  color: var(--pwa-text);
  font: inherit;
  outline: none;
}

.vcc-modal-field textarea {
  min-height: 124px;
  resize: vertical;
}

.vcc-modal-field input:focus,
.vcc-modal-field textarea:focus,
.vcc-modal-select:focus {
  border-color: rgba(21, 90, 166, 0.46);
  box-shadow: 0 0 0 4px rgba(21, 90, 166, 0.1);
}

.vcc-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.vcc-modal-actions button {
  min-height: 44px;
  padding: 0 16px;
  border: 0;
  border-radius: 14px;
  cursor: pointer;
  font-weight: 900;
}

.vcc-modal-primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--pwa-primary), var(--pwa-primary-deep));
}

.vcc-modal-secondary {
  color: var(--pwa-primary-deep);
  background: rgba(21, 90, 166, 0.1);
}

.skeleton-card,
.skeleton-line {
  overflow: hidden;
  border-radius: 14px;
  background: linear-gradient(90deg, rgba(21, 90, 166, 0.08), rgba(255, 255, 255, 0.65), rgba(21, 90, 166, 0.08));
  background-size: 220% 100%;
  animation: vccSkeleton 1100ms ease-in-out infinite;
}

.skeleton-card {
  display: grid;
  gap: 10px;
  padding: 16px;
  min-height: 96px;
}

.skeleton-card span,
.skeleton-line {
  display: block;
  height: 12px;
  border-radius: 999px;
  background: rgba(21, 90, 166, 0.12);
}

.skeleton-card span:nth-child(1) {
  width: 70%;
}

.skeleton-card span:nth-child(2) {
  width: 92%;
}

.skeleton-card span:nth-child(3) {
  width: 48%;
}

.skeleton-line {
  width: 100%;
  height: 18px;
}

@keyframes vccLogoPulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.035);
  }
}

@keyframes vccSkeleton {
  0% {
    background-position: 120% 0;
  }
  100% {
    background-position: -120% 0;
  }
}

@keyframes vccToastSpin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 640px) {
  .vcc-loader-logo {
    width: 112px;
    height: 112px;
  }

  .vcc-loader-ring-primary {
    inset: -8px;
    border-width: 3px;
  }

  .vcc-loader-ring-secondary {
    inset: -15px;
    border-width: 3px;
  }

  .vcc-loader-logo img {
    width: 82px;
    height: 82px;
  }

  .vcc-app-loader-card strong {
    font-size: 1rem;
  }

  .vcc-app-loader-card span {
    font-size: 0.88rem;
  }

  .pwa-install-card {
    align-items: stretch;
    flex-direction: column;
    width: 100%;
    gap: 10px;
    padding: 13px;
    border-radius: 18px;
  }

  .pwa-install-card .pwa-install {
    width: 100%;
    min-height: 46px;
    padding-inline: 10px;
  }

  .pwa-whatsapp-fab {
    right: max(12px, env(safe-area-inset-right));
    bottom: max(12px, env(safe-area-inset-bottom));
    width: 56px;
    height: 56px;
  }

  .vcc-toast-stack {
    top: auto;
    right: max(12px, env(safe-area-inset-right));
    bottom: calc(max(12px, env(safe-area-inset-bottom)) + 82px);
    left: max(12px, env(safe-area-inset-left));
    width: auto;
  }

  .vcc-modal {
    padding: 20px;
    border-radius: 20px;
  }

  .pwa-update-prompt {
    left: max(10px, env(safe-area-inset-left));
    right: max(10px, env(safe-area-inset-right));
    bottom: max(12px, env(safe-area-inset-bottom));
    grid-template-columns: 1fr;
    width: auto;
    border-radius: 18px;
  }

  .pwa-update-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .vcc-modal-actions {
    display: grid;
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .vcc-app-loader,
  .vcc-loader-logo,
  .vcc-loader-ring,
  .vcc-loader-track span,
  .vcc-toast,
  .vcc-modal-overlay,
  .vcc-modal,
  .skeleton-card,
  .skeleton-line {
    animation: none !important;
    transition: none !important;
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@-webkit-keyframes spin {
  from {
    -webkit-transform: rotate(0deg);
  }
  to {
    -webkit-transform: rotate(360deg);
  }
}

@keyframes pwaLoading {
  0% {
    transform: translateX(-110%);
  }
  100% {
    transform: translateX(260%);
  }
}

.pwa-offline-page {
  display: grid;
  min-height: 100dvh;
  place-items: center;
  margin: 0;
  padding: 24px;
  color: var(--pwa-text);
  background: radial-gradient(circle at top, rgba(21, 90, 166, 0.13), transparent 40%), var(--pwa-bg);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.pwa-offline-shell {
  display: grid;
  justify-items: center;
  gap: 14px;
  max-width: 420px;
  text-align: center;
}

.pwa-offline-shell img {
  width: 96px;
  height: 96px;
  border-radius: 24px;
}

.pwa-offline-shell h1 {
  margin: 0;
  font-size: 1.6rem;
  line-height: 1.2;
}

.pwa-offline-shell p {
  margin: 0;
  color: var(--pwa-muted);
  line-height: 1.65;
}

.pwa-offline-shell a {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  margin-top: 6px;
  padding: 0 18px;
  border-radius: 999px;
  color: #ffffff;
  background: var(--pwa-primary);
  font-weight: 800;
  text-decoration: none;
}