:root {
  --background: #eef7fb;
  --surface: #ffffff;
  --text: #06334d;
  --muted: #637889;
  --border: #d3e8f4;
  --accent: #5ec8ee;
  --accent-dark: #126f9b;
  --accent-deep: #0b557c;
  --accent-soft: #e3f6fd;
  --shadow: 0 24px 70px rgba(7, 72, 108, 0.16);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  color: var(--text);
  background: linear-gradient(135deg, #ffffff 0%, var(--background) 100%);
}

button,
input {
  font: inherit;
}

.login-page {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(20rem, 0.9fr) minmax(20rem, 1.1fr);
  align-items: stretch;
}

.brand-panel {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: clamp(2rem, 5vw, 4.5rem);
  overflow: hidden;
  color: var(--text);
  background:
    linear-gradient(150deg, rgba(255, 255, 255, 0.96) 0%, rgba(227, 246, 253, 0.94) 48%, rgba(18, 111, 155, 0.92) 100%),
    #e9f7fd;
}

.brand-panel::after {
  content: "";
  position: absolute;
  inset: 1.5rem;
  border: 1px solid rgba(94, 200, 238, 0.42);
  border-radius: 8px;
  pointer-events: none;
}

.logo-showcase {
  position: relative;
  z-index: 1;
  width: min(100%, 34rem);
  align-self: center;
}

.brand-logo {
  display: block;
  width: 100%;
  max-height: 24rem;
  object-fit: contain;
  filter: drop-shadow(0 24px 42px rgba(7, 72, 108, 0.16));
}

.login-panel {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: clamp(1.25rem, 4vw, 4rem);
}

.login-form {
  width: min(100%, 27rem);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid rgba(211, 232, 244, 0.95);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

.login-form__header {
  margin-bottom: 2rem;
}

.login-form h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1;
  letter-spacing: 0;
}

.field {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 1rem;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 700;
}

.field input {
  width: 100%;
  min-height: 3.25rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 1rem;
  background: #fbfcfe;
  color: var(--text);
  outline: none;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    background-color 160ms ease;
}

.password-control {
  position: relative;
  display: block;
}

.password-control input {
  padding-right: 3.35rem;
}

.password-toggle {
  position: absolute;
  top: 50%;
  right: 0.65rem;
  display: inline-grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--accent-deep);
  cursor: pointer;
  touch-action: manipulation;
  user-select: none;
  transform: translateY(-50%);
}

.password-toggle:hover {
  background: var(--accent-soft);
}

.password-toggle:focus-visible {
  outline: 3px solid var(--accent-soft);
  outline-offset: 2px;
}

.password-toggle svg {
  width: 1.15rem;
  height: 1.15rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.field input::placeholder {
  color: #9aa6b5;
}

.field input:focus {
  border-color: var(--accent);
  background: #ffffff;
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.login-form.is-invalid .field input {
  border-color: #d84a4a;
}

.login-form.is-invalid .field input:focus {
  box-shadow: 0 0 0 4px rgba(216, 74, 74, 0.14);
}

.login-button {
  width: 100%;
  min-height: 3.25rem;
  border: 0;
  border-radius: 8px;
  margin-top: 0.75rem;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #ffffff;
  cursor: pointer;
  font-weight: 800;
  transition:
    background-color 160ms ease,
    transform 160ms ease,
    box-shadow 160ms ease;
}

.login-button:hover {
  background: linear-gradient(135deg, #4dbce5 0%, var(--accent-deep) 100%);
  box-shadow: 0 14px 30px rgba(18, 111, 155, 0.24);
  transform: translateY(-1px);
}

.login-button:focus-visible,
.forgot-password:focus-visible,
.link-button:focus-visible,
.reset-link:focus-visible,
.google-fallback-button:focus-visible {
  outline: 3px solid var(--accent-soft);
  outline-offset: 3px;
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 1.25rem 0;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  height: 1px;
  flex: 1;
  background: var(--border);
}

.google-signin-area {
  display: grid;
  justify-items: center;
  min-height: 2.75rem;
}

#google-signin-button {
  width: min(100%, 20rem);
}

.google-fallback-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: min(100%, 20rem);
  min-height: 2.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #ffffff;
  color: var(--text);
  cursor: pointer;
  font-weight: 800;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

.google-fallback-button:hover {
  border-color: var(--accent);
  box-shadow: 0 10px 22px rgba(18, 111, 155, 0.12);
  transform: translateY(-1px);
}

.google-logo {
  width: 1.15rem;
  height: 1.15rem;
  flex: 0 0 auto;
}

.forgot-password {
  display: block;
  width: fit-content;
  margin: 1.25rem auto 0;
  color: var(--accent-deep);
  font-size: 0.95rem;
  font-weight: 800;
  text-decoration: none;
}

.forgot-password:hover {
  text-decoration: underline;
}

.link-button {
  display: block;
  width: fit-content;
  border: 0;
  margin: 1rem auto 0;
  padding: 0;
  background: transparent;
  color: var(--accent-deep);
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 800;
}

.link-button:hover {
  text-decoration: underline;
}

.password-rules {
  margin: -0.15rem 0 1.1rem;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.45;
}

.login-error {
  margin: 1.25rem 0 0;
  border: 1px solid rgba(216, 74, 74, 0.34);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  background: #fff2f2;
  color: #a62121;
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1.4;
  text-align: center;
}

.google-error {
  margin: 1rem 0 0;
  border: 1px solid rgba(216, 74, 74, 0.34);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  background: #fff2f2;
  color: #a62121;
  font-size: 0.88rem;
  font-weight: 800;
  line-height: 1.4;
  text-align: center;
}

.reset-email {
  margin-top: 1.25rem;
  border: 1px solid rgba(18, 111, 155, 0.24);
  border-radius: 8px;
  padding: 1rem;
  background: #f4fbfe;
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.45;
}

.reset-email p {
  margin: 0 0 0.85rem;
}

.email-subject {
  color: var(--accent-deep);
}

.reset-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.7rem;
  border-radius: 8px;
  padding: 0 1rem;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #ffffff;
  font-weight: 800;
  text-decoration: none;
}

.reset-link:hover {
  background: linear-gradient(135deg, #4dbce5 0%, var(--accent-deep) 100%);
}

.login-success {
  margin: 1.25rem 0 0;
  border: 1px solid rgba(18, 111, 155, 0.3);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1.4;
  text-align: center;
}

.login-page.is-authenticated {
  display: block;
}

.login-page.is-authenticated .brand-panel,
.login-page.is-authenticated .login-panel {
  display: none;
}

.app-shell[hidden] {
  display: none;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 17rem 1fr;
  background: linear-gradient(135deg, #ffffff 0%, var(--background) 100%);
}

.app-shell.is-collapsed {
  grid-template-columns: 5rem 1fr;
}

.sidebar {
  position: relative;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  background: #ffffff;
}

.sidebar__top {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 7rem;
  padding: 1rem 4rem 1rem 1.1rem;
  border-bottom: 1px solid var(--border);
}

.sidebar__logo {
  display: block;
  width: auto;
  height: 5.25rem;
  max-width: 12.5rem;
  margin: 0 auto;
  object-fit: contain;
}

.sidebar__toggle,
.sidebar__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--accent-deep);
  cursor: pointer;
}

.sidebar__toggle {
  position: absolute;
  top: 2.32rem;
  right: -1.05rem;
  z-index: 2;
  width: 2.35rem;
  height: 2.35rem;
  border: 1px solid rgba(94, 200, 238, 0.64);
  border-radius: 999px;
  background: #ffffff;
  box-shadow: 0 10px 26px rgba(7, 72, 108, 0.16);
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.sidebar__toggle:hover,
.sidebar__item:hover {
  background: var(--accent-soft);
}

.sidebar__toggle:hover {
  border-color: var(--accent);
  box-shadow: 0 14px 30px rgba(18, 111, 155, 0.24);
  transform: translateX(-1px);
}

.sidebar__toggle:focus-visible,
.sidebar__item:focus-visible,
.logout-button:focus-visible,
.tool-card__action:focus-visible {
  outline: 3px solid var(--accent-soft);
  outline-offset: 2px;
}

.sidebar svg,
.tool-card__icon svg {
  width: 1.2rem;
  height: 1.2rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.sidebar__nav {
  display: grid;
  gap: 0.4rem;
  padding: 1rem;
}

.sidebar__item {
  justify-content: flex-start;
  gap: 0.75rem;
  min-height: 2.85rem;
  padding: 0 0.85rem;
  font-weight: 800;
}

.sidebar__item.is-active {
  background: var(--accent-soft);
}

.app-shell.is-collapsed .sidebar__logo,
.app-shell.is-collapsed .sidebar__item span {
  display: none;
}

.app-shell.is-collapsed .sidebar__top {
  min-height: 5rem;
  justify-content: center;
  padding: 1rem 0.75rem;
}

.app-shell.is-collapsed .sidebar__toggle {
  top: 1.35rem;
  right: -1.05rem;
  transform: rotate(180deg);
}

.app-shell.is-collapsed .sidebar__toggle:hover {
  transform: rotate(180deg) translateX(-1px);
}

.app-shell.is-collapsed .sidebar__item {
  justify-content: center;
  padding: 0;
}

.workspace {
  min-width: 0;
  padding: clamp(1.25rem, 4vw, 3.5rem);
}

.workspace__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}

.workspace__eyebrow {
  margin: 0 0 0.35rem;
  color: var(--accent-deep);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.workspace h1 {
  margin: 0;
  color: var(--text);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: 0;
  line-height: 1;
}

.logout-button {
  min-height: 2.65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 1rem;
  background: #ffffff;
  color: var(--accent-deep);
  cursor: pointer;
  font-weight: 800;
}

.logout-button:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
  gap: 1rem;
}

.tool-card {
  display: grid;
  gap: 1rem;
  min-height: 13rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 18px 48px rgba(7, 72, 108, 0.1);
}

.tool-card__icon {
  display: inline-grid;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-deep);
}

.tool-card h2 {
  margin: 0;
  color: var(--text);
  font-size: 1.2rem;
  line-height: 1.2;
}

.tool-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.tool-card__action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 2.6rem;
  border-radius: 8px;
  padding: 0 1rem;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: #ffffff;
  font-weight: 800;
  text-decoration: none;
}

.tool-card__action:hover {
  background: linear-gradient(135deg, #4dbce5 0%, var(--accent-deep) 100%);
}

.empty-state {
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font-weight: 800;
}

.workspace-section[hidden] {
  display: none;
}

.learning-panel {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: clamp(1.25rem, 3vw, 2rem);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 18px 48px rgba(7, 72, 108, 0.1);
}

.learning-panel h2 {
  margin: 0 0 0.5rem;
  color: var(--text);
  font-size: 1.4rem;
}

.learning-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

@media (max-width: 760px) {
  .login-page {
    grid-template-columns: 1fr;
  }

  .brand-panel {
    min-height: 14rem;
    padding: 1.5rem;
  }

  .brand-panel::after {
    inset: 0.9rem;
  }

  .logo-showcase {
    width: min(100%, 19rem);
    margin-top: 0;
  }

  .brand-logo {
    max-height: 9rem;
  }

  .login-panel {
    min-height: auto;
    padding: 1rem;
  }

  .login-form {
    box-shadow: 0 18px 48px rgba(22, 32, 42, 0.12);
  }

  .app-shell,
  .app-shell.is-collapsed {
    grid-template-columns: 1fr;
  }

  .sidebar {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .sidebar__top {
    min-height: 5rem;
    padding-right: 4rem;
  }

  .sidebar__logo {
    height: 3.4rem;
    max-width: 8.5rem;
  }

  .sidebar__toggle,
  .app-shell.is-collapsed .sidebar__toggle {
    top: 1.32rem;
    right: 1rem;
  }

  .app-shell.is-collapsed .sidebar__logo {
    display: block;
  }

  .app-shell.is-collapsed .sidebar__item span {
    display: inline;
  }

  .sidebar__nav {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    overflow-x: auto;
  }

  .workspace__header {
    align-items: flex-start;
    flex-direction: column;
  }

}