:root {
  --color-bg: #102a43;
  --color-soft-bg: #f4f7fa;
  --color-card: #ffffff;
  --color-accent: #00c853;
  --color-premium: #ffb400;
  --color-alert: #d72638;
  --color-text: #102a43;
  --color-muted: #535a70;
  --color-border: #d9e2ec;
  --color-info: #1f7aec;
  --shadow-soft: 0 18px 50px rgba(16, 42, 67, 0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --sidebar-width: 280px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--color-text);
  background: var(--color-soft-bg);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 26px;
  padding: 24px 18px;
  color: #fff;
  background: var(--color-bg);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 10px;
  color: var(--color-bg);
  background: var(--color-accent);
  font-weight: 900;
}

.brand strong {
  display: block;
  line-height: 1.1;
  font-size: 1.08rem;
}

.brand span {
  display: block;
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.82rem;
}

.side-nav {
  display: grid;
  gap: 6px;
}

.side-nav a,
.sidebar-logout {
  border-radius: 8px;
  padding: 12px 14px;
  color: rgba(255, 255, 255, 0.78);
  transition: background 0.18s ease, color 0.18s ease;
}

.side-nav a:hover,
.side-nav a.is-active {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.sidebar-logout {
  margin-top: auto;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: transparent;
  text-align: left;
}

.main-panel {
  min-width: 0;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 82px;
  padding: 18px 28px;
  background: rgba(244, 247, 250, 0.92);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(16px);
}

.topbar h1 {
  margin: 0;
  font-size: 1.55rem;
  letter-spacing: 0;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--color-muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.session-pill {
  display: inline-flex;
  max-width: 320px;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-muted);
  background: #fff;
  font-size: 0.86rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.content-area {
  padding: 28px;
}

.icon-button,
.ghost-button,
.primary-button,
.secondary-button,
.danger-button {
  border: 0;
  border-radius: 8px;
  min-height: 40px;
  padding: 0 14px;
  font-weight: 700;
}

.icon-button {
  display: none;
  width: 42px;
  padding: 0;
  color: var(--color-text);
  background: #fff;
  border: 1px solid var(--color-border);
}

.primary-button {
  color: var(--color-bg);
  background: var(--color-accent);
}

.google-button {
  border: 1px solid var(--color-border);
  background: #fff;
}

.secondary-button {
  color: var(--color-text);
  background: #eaf0f5;
}

.danger-button {
  color: #fff;
  background: var(--color-alert);
}

.ghost-button {
  color: var(--color-text);
  background: transparent;
  border: 1px solid var(--color-border);
}

.topbar-logout {
  background: #fff;
}

.loading-card,
.empty-state,
.panel-card {
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-card);
  box-shadow: var(--shadow-soft);
}

.empty-state {
  color: var(--color-muted);
  text-align: center;
}

.login-page {
  display: grid;
  min-height: 100vh;
  place-items: center;
  background: var(--color-bg);
}

.login-shell {
  width: min(94vw, 430px);
}

.login-card {
  padding: 30px;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.24);
}

.login-brand {
  margin-bottom: 26px;
  color: var(--color-text);
}

.login-brand span {
  color: var(--color-muted);
}

.form-grid {
  display: grid;
  gap: 16px;
}

.form-grid label {
  display: grid;
  gap: 7px;
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.form-grid label small,
.plan-form label small,
.template-form label small,
.config-form label small {
  color: #758195;
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.35;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  min-height: 44px;
  padding: 11px 12px;
  color: var(--color-text);
  background: #fff;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

textarea {
  min-height: 110px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: 0;
  box-shadow: 0 0 0 3px rgba(0, 200, 83, 0.16);
  border-color: var(--color-accent);
}

input:invalid:not(:placeholder-shown),
textarea:invalid:not(:placeholder-shown) {
  border-color: rgba(215, 38, 56, 0.72);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.form-message,
.security-note {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.form-message.is-error {
  color: var(--color-alert);
}

.form-message.is-success {
  color: #087f3c;
}

.toast-stack {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 50;
  display: grid;
  gap: 10px;
  width: min(360px, calc(100vw - 36px));
}

.toast {
  padding: 14px 16px;
  border-radius: 10px;
  color: #fff;
  background: var(--color-bg);
  box-shadow: var(--shadow-soft);
}

.toast.success {
  color: var(--color-bg);
  background: var(--color-accent);
}

.toast.error {
  background: var(--color-alert);
}