:root {
  --navy-900: #07354f;
  --navy-700: #155076;
  --accent: #d0f89c;
  --gray: #526f7c;
  --ink: #08090a;
  --muted: #697881;
  --line: #dde3e6;
  --surface: #ffffff;
  --canvas: #f5f7f8;
  --danger: #b23a3a;
  --danger-soft: #fae7e7;
  --warning: #9a6a00;
  --warning-soft: #fff4d8;
  --success: #246743;
  --success-soft: #eaf6ee;
  --shadow: 0 20px 55px rgba(7, 53, 79, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  letter-spacing: 0;
}

button,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.login-screen {
  align-items: center;
  background:
    linear-gradient(135deg, rgba(7, 53, 79, 0.96), rgba(21, 80, 118, 0.88)),
    var(--navy-900);
  display: flex;
  min-height: 100vh;
  padding: 28px;
}

.login-screen.is-hidden {
  display: none;
}

.login-panel {
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(260px, 0.9fr) minmax(320px, 420px);
  margin: 0 auto;
  max-width: 980px;
  width: 100%;
}

.login-brand {
  align-items: center;
  border-left: 4px solid var(--accent);
  display: flex;
  padding-left: 28px;
}

.login-brand img {
  display: block;
  max-width: 360px;
  width: 100%;
}

.login-card {
  background: white;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 16px;
  padding: 28px;
}

.login-card h1 {
  font-size: 36px;
}

.login-copy {
  color: var(--muted);
  margin-bottom: 6px;
}

.login-card label {
  color: var(--navy-900);
  display: grid;
  font-size: 13px;
  font-weight: 850;
  gap: 7px;
}

.login-card input {
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  font: inherit;
  min-height: 44px;
  padding: 0 12px;
}

.login-card input:focus {
  border-color: var(--navy-700);
  outline: 3px solid rgba(21, 80, 118, 0.14);
}

.login-error {
  color: var(--danger);
  font-size: 13px;
  font-weight: 800;
  min-height: 18px;
}

.app-shell {
  display: grid;
  grid-template-columns: 268px 1fr;
  min-height: 100vh;
}

.app-shell.is-locked {
  display: none;
}

.sidebar {
  background: var(--navy-900);
  color: white;
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 28px 18px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand-lockup {
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  padding: 10px 8px 24px;
}

.brand-lockup img {
  display: block;
  width: 198px;
  height: auto;
}

.role-nav {
  display: grid;
  gap: 8px;
}

.role-tab {
  align-items: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.78);
  display: flex;
  gap: 10px;
  min-height: 46px;
  padding: 0 12px;
  text-align: left;
}

.role-tab.is-active,
.role-tab:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(208, 248, 156, 0.35);
  color: white;
}

.icon {
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 7px;
  display: inline-flex;
  height: 28px;
  justify-content: center;
  width: 28px;
}

.sidebar-status {
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.7);
  display: flex;
  font-size: 13px;
  gap: 10px;
  margin-top: auto;
  padding: 18px 8px 4px;
}

.pulse-dot {
  background: var(--accent);
  border-radius: 999px;
  box-shadow: 0 0 0 4px rgba(208, 248, 156, 0.16);
  display: inline-block;
  height: 8px;
  width: 8px;
}

.content {
  min-width: 0;
  padding: 28px;
}

.topbar {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-bottom: 28px;
  gap: 20px;
}

.eyebrow,
.section-heading p,
.panel-header p,
.mobile-header p {
  color: var(--muted);
  margin: 0;
}

.eyebrow {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1;
  margin: 6px 0 0;
}

h2 {
  font-size: 24px;
  margin-bottom: 6px;
}

h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.topbar-actions,
.parent-actions {
  display: flex;
  gap: 10px;
}

.primary-button,
.ghost-button,
.text-button {
  border-radius: 8px;
  min-height: 42px;
  padding: 0 16px;
}

.primary-button {
  background: var(--navy-900);
  border: 1px solid var(--navy-900);
  color: white;
  font-weight: 750;
}

.primary-button:hover {
  background: var(--navy-700);
}

.ghost-button {
  background: white;
  border: 1px solid var(--line);
  color: var(--navy-900);
  font-weight: 700;
}

.text-button {
  background: transparent;
  border: 0;
  color: var(--navy-700);
  font-weight: 800;
  padding: 0;
}

.full-width {
  width: 100%;
}

.view {
  display: none;
}

.view.is-active {
  display: block;
}

.section-heading {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-bottom: 18px;
  gap: 16px;
}

.month-pill {
  background: white;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--navy-900);
  font-weight: 800;
  padding: 10px 14px;
}

.kpi-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 16px;
}

.kpi-card,
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 1px 0 rgba(7, 53, 79, 0.02);
}

.kpi-card {
  padding: 18px;
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  background: var(--accent);
  content: "";
  height: 3px;
  left: 18px;
  position: absolute;
  top: 0;
  width: 34px;
}

.kpi-card span {
  color: var(--muted);
  display: block;
  font-size: 13px;
  font-weight: 750;
  margin-bottom: 12px;
}

.kpi-card strong {
  color: var(--navy-900);
  display: block;
  font-size: 30px;
  line-height: 1;
}

.kpi-card p {
  color: var(--muted);
  font-size: 13px;
  margin: 12px 0 0;
}

.workspace-grid,
.lower-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 2fr) minmax(300px, 0.9fr);
}

.lower-grid {
  grid-template-columns: minmax(300px, 0.9fr) minmax(0, 2fr);
  margin-top: 16px;
}

.panel {
  min-width: 0;
  padding: 18px;
}

.panel-header {
  align-items: flex-start;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
}

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

table {
  border-collapse: collapse;
  min-width: 760px;
  width: 100%;
}

th {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  padding: 0 12px 12px 0;
  text-align: left;
  text-transform: uppercase;
}

td {
  border-top: 1px solid var(--line);
  padding: 14px 12px 14px 0;
  vertical-align: middle;
}

.student-cell strong {
  display: block;
}

.student-cell span,
.agenda-item p,
.message-item p,
.task-item p {
  color: var(--muted);
  font-size: 13px;
}

.status-chip {
  border-radius: 999px;
  display: inline-flex;
  font-size: 12px;
  font-weight: 850;
  padding: 6px 9px;
  white-space: nowrap;
}

.status-chip.paid {
  background: var(--success-soft);
  color: var(--success);
}

.status-chip.pending {
  background: var(--warning-soft);
  color: var(--warning);
}

.status-chip.overdue {
  background: var(--danger-soft);
  color: var(--danger);
}

.row-button {
  background: var(--navy-900);
  border: 0;
  border-radius: 7px;
  color: white;
  min-height: 34px;
  padding: 0 12px;
}

.row-button[disabled] {
  background: #e8ecee;
  color: var(--muted);
  cursor: default;
}

.agenda-list,
.message-list,
.task-grid,
.attendance-list {
  display: grid;
  gap: 10px;
}

.agenda-item,
.message-item,
.task-item,
.attendance-row {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
}

.agenda-item {
  display: grid;
  gap: 8px;
}

.agenda-time {
  color: var(--navy-700);
  font-size: 13px;
  font-weight: 850;
}

.teacher-layout,
.parent-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: 360px minmax(0, 1fr);
}

.phone-preview {
  display: flex;
  justify-content: center;
}

.phone-shell {
  background: #fdfefe;
  border: 10px solid #111;
  border-radius: 34px;
  box-shadow: var(--shadow);
  min-height: 650px;
  overflow: hidden;
  padding: 18px;
  width: 320px;
}

.mobile-header {
  align-items: center;
  display: flex;
  gap: 12px;
  margin-bottom: 18px;
}

.mobile-header img {
  height: 44px;
  object-fit: contain;
  width: 44px;
}

.mobile-header strong {
  color: var(--navy-900);
  display: block;
  font-size: 20px;
}

.segmented {
  background: #edf2f4;
  border-radius: 8px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-bottom: 16px;
  padding: 4px;
}

.segmented button {
  background: transparent;
  border: 0;
  border-radius: 7px;
  color: var(--muted);
  min-height: 34px;
}

.segmented .is-selected {
  background: white;
  color: var(--navy-900);
  font-weight: 850;
}

.mobile-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-bottom: 10px;
  padding: 14px;
}

.mobile-card.is-current {
  border-color: rgba(7, 53, 79, 0.28);
  box-shadow: inset 3px 0 0 var(--accent);
}

.mobile-card span {
  color: var(--navy-700);
  font-size: 13px;
  font-weight: 850;
}

.attendance-panel,
.parent-panel {
  align-self: start;
  box-shadow: var(--shadow);
}

.attendance-row {
  align-items: center;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(140px, 1fr) auto;
}

.attendance-row strong {
  display: block;
}

.attendance-row span {
  color: var(--muted);
  font-size: 13px;
}

.attendance-actions {
  display: flex;
  gap: 6px;
}

.attendance-actions button {
  background: white;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--muted);
  min-height: 34px;
  padding: 0 10px;
}

.attendance-actions button.is-selected {
  border-color: var(--navy-900);
  color: var(--navy-900);
  font-weight: 850;
}

.attendance-actions button[data-status="asistio"].is-selected {
  box-shadow: inset 0 -3px 0 var(--accent);
}

.note-field {
  color: var(--muted);
  display: grid;
  font-size: 13px;
  font-weight: 800;
  gap: 8px;
  margin: 18px 0;
}

textarea {
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  padding: 12px;
  resize: vertical;
}

.parent-phone {
  min-height: 680px;
}

.balance-card {
  background: var(--navy-900);
  border-radius: 8px;
  color: white;
  margin-bottom: 16px;
  padding: 18px;
  position: relative;
}

.balance-card::before {
  background: var(--accent);
  content: "";
  height: 3px;
  left: 18px;
  position: absolute;
  top: 0;
  width: 38px;
}

.balance-card p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 8px;
}

.balance-card strong {
  display: block;
  font-size: 38px;
  line-height: 1;
}

.balance-card span {
  color: rgba(255, 255, 255, 0.74);
  display: block;
  margin: 10px 0 16px;
}

.balance-card button {
  background: white;
  border: 0;
  border-radius: 7px;
  color: var(--navy-900);
  font-weight: 850;
  min-height: 40px;
  width: 100%;
}

.mini-section {
  border-top: 1px solid var(--line);
  padding: 14px 0;
}

.mini-row,
.invoice-card div {
  align-items: center;
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.mini-row {
  min-height: 34px;
}

.ok-text {
  color: var(--success);
}

.late-text {
  color: var(--warning);
}

.invoice-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 14px;
  padding: 16px;
}

.invoice-card span {
  color: var(--muted);
}

.invoice-total {
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.invoice-total strong {
  color: var(--navy-900);
  font-size: 28px;
}

.notification-demo {
  align-items: center;
  background: #f8fbf1;
  border: 1px solid rgba(208, 248, 156, 0.9);
  border-radius: 8px;
  color: var(--navy-900);
  display: flex;
  gap: 10px;
  margin: 16px 0;
  padding: 12px;
}

.toast {
  background: var(--ink);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  bottom: 24px;
  box-shadow: var(--shadow);
  color: white;
  left: 50%;
  max-width: min(460px, calc(100vw - 32px));
  opacity: 0;
  padding: 14px 16px;
  pointer-events: none;
  position: fixed;
  transform: translate(-50%, 20px);
  transition: 180ms ease;
  z-index: 10;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 1080px) {
  .login-panel {
    grid-template-columns: 1fr;
  }

  .login-brand {
    border-left: 0;
    border-top: 4px solid var(--accent);
    padding: 24px 0 0;
  }

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

  .sidebar {
    height: auto;
    position: static;
  }

  .role-nav {
    grid-template-columns: repeat(3, 1fr);
  }

  .workspace-grid,
  .lower-grid,
  .teacher-layout,
  .parent-grid,
  .kpi-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .content {
    padding: 18px;
  }

  .topbar,
  .section-heading,
  .panel-header,
  .topbar-actions,
  .parent-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .role-nav {
    grid-template-columns: 1fr;
  }

  .brand-lockup img {
    width: 180px;
  }

  .phone-shell {
    min-height: auto;
    width: min(320px, 100%);
  }

  .attendance-row {
    grid-template-columns: 1fr;
  }

  .attendance-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }
}