:root {
  --page-bg: #f5f7fb;
  --page-bg-soft: #fbfcfe;
  --card-bg: #ffffff;
  --card-border: #d9e0ea;
  --text-main: #1d2a38;
  --text-soft: #607181;
  --accent: #18324d;
  --accent-strong: #0d2236;
  --accent-soft: #edf3f9;
  --success-bg: #e8f7ed;
  --success-text: #17603a;
  --error-bg: #fdeceb;
  --error-text: #922626;
  --warning-bg: #fff4db;
  --warning-text: #8a5a00;
  --paused-bg: #f4e7e7;
  --paused-text: #7f2f2f;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --shadow-soft: 0 24px 70px rgba(15, 34, 54, 0.08);
  --font-ui: "Trebuchet MS", "Aptos", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--page-bg);
  color: var(--text-main);
  font-family: var(--font-ui);
}

body {
  min-height: 100vh;
}

a {
  color: inherit;
}

.public-shell {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 2rem;
  background:
    radial-gradient(circle at top, rgba(24, 50, 77, 0.06), transparent 36%),
    linear-gradient(180deg, #fdfefe 0%, #f4f6f9 100%);
}

.brand-logo {
  display: block;
  width: min(76vw, 460px);
  height: auto;
  object-fit: contain;
}

.auth-shell,
.client-screen,
.simple-screen {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 2rem 1.25rem;
  background:
    radial-gradient(circle at top, rgba(24, 50, 77, 0.08), transparent 32%),
    linear-gradient(180deg, #f8fafc 0%, #eef2f6 100%);
}

.auth-card,
.simple-card,
.panel-card {
  width: min(100%, 520px);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 2rem;
}

.auth-title,
.simple-title,
.panel-title {
  margin: 0 0 0.6rem;
  color: var(--accent-strong);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
}

.auth-subtitle,
.simple-text,
.panel-text {
  margin: 0 0 1.6rem;
  color: var(--text-soft);
  line-height: 1.55;
}

.auth-form,
.client-form,
.form-grid {
  display: grid;
  gap: 1rem;
}

.form-grid.two-columns {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field-group {
  display: grid;
  gap: 0.45rem;
}

.field-group.full-width {
  grid-column: 1 / -1;
}

.field-label {
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--accent);
}

.field-input,
.field-select,
.field-textarea {
  width: 100%;
  border: 1px solid #c7d0da;
  border-radius: 14px;
  background: #fcfdff;
  color: var(--text-main);
  padding: 0.9rem 1rem;
  font: inherit;
  transition: border-color 120ms ease, box-shadow 120ms ease;
}

.field-textarea {
  min-height: 112px;
  resize: vertical;
}

.field-input:focus,
.field-select:focus,
.field-textarea:focus {
  outline: none;
  border-color: #587a9d;
  box-shadow: 0 0 0 4px rgba(88, 122, 157, 0.18);
}

.flash-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.1rem;
  display: grid;
  gap: 0.75rem;
}

.flash {
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  line-height: 1.45;
}

.flash-error {
  background: var(--error-bg);
  color: var(--error-text);
}

.flash-success {
  background: var(--success-bg);
  color: var(--success-text);
}

.button,
.button-link,
.ghost-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform 120ms ease, filter 120ms ease;
}

.button:hover,
.button-link:hover,
.ghost-link:hover {
  filter: brightness(1.03);
  transform: translateY(-1px);
}

.button {
  border: 0;
  padding: 0.9rem 1.2rem;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #ffffff;
}

.button.full-width {
  width: 100%;
}

.button-light {
  background: #eef3f8;
  color: var(--accent);
  border: 1px solid #d3dde8;
}

.button-danger {
  background: #8f3131;
  color: #ffffff;
}

.button-warning {
  background: #a06a06;
  color: #ffffff;
}

.button-plain {
  background: transparent;
  color: var(--accent);
  border: 1px solid #d3dde8;
}

.ghost-link {
  color: var(--accent);
}

.admin-shell {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: minmax(240px, 280px) 1fr;
  background: linear-gradient(180deg, #fbfcfe 0%, #f2f5f9 100%);
}

.admin-sidebar {
  background: var(--accent-strong);
  color: #f6f9fc;
  padding: 2rem 1.5rem;
  display: grid;
  align-content: start;
  gap: 1.6rem;
}

.admin-brand-title {
  margin: 0;
  font-size: 1.8rem;
}

.admin-brand-text {
  margin: 0.35rem 0 0;
  color: rgba(246, 249, 252, 0.76);
  line-height: 1.5;
}

.admin-nav {
  display: grid;
  gap: 0.75rem;
}

.admin-nav-link {
  display: block;
  padding: 0.85rem 1rem;
  border-radius: 16px;
  color: #f6f9fc;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.04);
}

.admin-nav-link.is-active,
.admin-nav-link:hover {
  background: rgba(255, 255, 255, 0.12);
}

.admin-content {
  padding: 2rem;
  display: grid;
  align-content: start;
  gap: 1.4rem;
}

.content-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
}

.content-title {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  color: var(--accent-strong);
}

.content-subtitle {
  margin: 0.45rem 0 0;
  color: var(--text-soft);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 22px;
  padding: 1.3rem 1.4rem;
  box-shadow: var(--shadow-soft);
}

.stat-label {
  display: block;
  font-size: 0.9rem;
  color: var(--text-soft);
}

.stat-value {
  display: block;
  margin-top: 0.35rem;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-strong);
}

.table-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.table-wrap {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 980px;
}

.data-table th,
.data-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid #e6ebf1;
  vertical-align: top;
}

.data-table th {
  background: #f6f9fc;
  color: var(--accent);
  font-size: 0.92rem;
}

.status-badge,
.alert-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  font-size: 0.82rem;
  font-weight: 700;
}

.status-active,
.alert-active {
  background: var(--success-bg);
  color: var(--success-text);
}

.status-paused {
  background: var(--paused-bg);
  color: var(--paused-text);
}

.alert-inactive {
  background: #eef2f6;
  color: var(--text-soft);
}

.action-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.action-stack form {
  margin: 0;
}

.mini-button {
  border: 0;
  border-radius: 999px;
  padding: 0.55rem 0.85rem;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  color: #ffffff;
  background: var(--accent);
}

.mini-button.light {
  background: #eef3f8;
  color: var(--accent);
  border: 1px solid #d3dde8;
}

.mini-button.warning {
  background: #a06a06;
}

.mini-button.danger {
  background: #8f3131;
}

.inline-note {
  font-size: 0.9rem;
  color: var(--text-soft);
}

.credential-grid {
  display: grid;
  gap: 1rem;
}

.credential-item {
  border: 1px solid #d9e0ea;
  border-radius: 18px;
  padding: 1rem 1.1rem;
  background: #f8fbfe;
}

.credential-label {
  display: block;
  color: var(--text-soft);
  font-size: 0.9rem;
}

.credential-value {
  display: block;
  margin-top: 0.35rem;
  word-break: break-word;
  font-weight: 700;
  color: var(--accent-strong);
}

.client-screen.white-screen {
  background: #ffffff;
  position: relative;
}

.client-panel-stack {
  width: min(100%, 520px);
  display: grid;
  gap: 1.25rem;
}

.client-flash-list {
  margin: 0;
}

.client-logout {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  border: 1px solid #d7dde5;
  background: #eef3f8;
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

.client-center-title {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--accent-strong);
  text-align: center;
}

.client-password-card {
  background: #f7fafd;
  border: 1px solid #dce5ef;
  border-radius: 24px;
  padding: 1.4rem;
  box-shadow: 0 18px 42px rgba(15, 34, 54, 0.08);
}

.client-password-header {
  margin-bottom: 1rem;
}

.client-password-title {
  margin: 0 0 0.45rem;
  color: var(--accent-strong);
  font-size: 1.4rem;
}

.client-password-text {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.5;
}

.payment-modal-backdrop {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(13, 34, 54, 0.52);
  z-index: 1000;
}

.payment-modal {
  width: min(100%, 420px);
  background: #ffffff;
  border-radius: 24px;
  padding: 1.5rem;
  border: 1px solid #edd39e;
  box-shadow: 0 20px 70px rgba(13, 34, 54, 0.2);
}

.payment-modal-title {
  margin: 0 0 0.7rem;
  color: #8a5a00;
  font-size: 1.4rem;
}

.payment-modal-text {
  margin: 0 0 1.2rem;
  color: #5d4b1c;
  line-height: 1.55;
}

.payment-modal-actions {
  display: flex;
  justify-content: end;
}

.hidden {
  display: none;
}

@media (max-width: 980px) {
  .admin-shell {
    grid-template-columns: 1fr;
  }

  .admin-sidebar {
    gap: 1rem;
  }

  .admin-content {
    padding: 1.5rem 1rem 2rem;
  }
}

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

  .content-header {
    flex-direction: column;
  }

  .client-logout {
    top: 1rem;
    right: 1rem;
  }
}