:root {
  /* Colors */
  --color-absolute-black: #171618;
  --color-paper-white: #ffffff;
  --color-graphite: #727578;
  --color-light-gray: #f7f7f7;
  --color-silver-mist: #efefef;
  --color-slate-border: #dadada;
  --color-feedback-violet: #38296c;
  --color-agent-blue: #004d60;
  --color-insight-amber: #6c4800;
  --color-pale-lilac: #f5f0ff;
  --color-cloud-blue: #defafe;
  --color-mellow-apricot: #fff6e1;
  --color-soft-lavender: #e7e0fe;
  --color-sky-tint: #cfeff8;
  --color-sun-mist: #feedcc;

  /* Typography — Font Families */
  --font-inter: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-eudoxus-sans: 'Eudoxus Sans', ui-sans-serif, system-ui, -apple-system, sans-serif;

  /* Typography — Scale */
  --text-heading: 21px;
  --leading-heading: 1.4;
  --tracking-heading: -0.63px;
  --text-heading-lg: 23px;
  --leading-heading-lg: 1.2;
  --tracking-heading-lg: -0.67px;
  --text-display: 48px;
  --leading-display: 1.05;
  --tracking-display: -1.39px;

  /* Spacing */
  --spacing-12: 12px;
  --spacing-16: 16px;
  --spacing-24: 24px;
  --spacing-32: 32px;
  --spacing-64: 64px;

  /* Border Radius */
  --radius-cards: 20px;
  --radius-badges: 100px;
  --radius-inputs: 8px;
  --radius-buttons: 10px;

  /* Shadows */
  --shadow-md: rgba(239, 239, 239, 0.55) 0px 2px 15px 0px;
  --shadow-subtle: rgba(0, 0, 0, 0.08) 0px 1px 2px 0px, rgba(0, 0, 0, 0.12) 0px 0.5px 0px 0px;
}

body {
  font-family: var(--font-inter);
  background-color: var(--color-paper-white);
  color: var(--color-absolute-black);
  margin: 0;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .display-text {
  font-family: var(--font-eudoxus-sans);
  font-weight: 700;
  letter-spacing: var(--tracking-heading);
  margin-top: 0;
}

.container {
  max-width: 1100px;
  margin: var(--spacing-32) auto;
  padding: var(--spacing-24);
}

/* Cards */
.card {
  background: var(--color-paper-white);
  border-radius: var(--radius-cards);
  padding: 24px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-silver-mist);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
  transform: translateY(-2px);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: var(--radius-buttons);
  font-family: var(--font-inter);
  font-weight: 500;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid transparent;
  gap: 8px;
}

.btn-primary {
  background: var(--color-absolute-black);
  color: var(--color-paper-white);
}

.btn-primary:hover {
  opacity: 0.9;
  box-shadow: var(--shadow-subtle);
}

.btn-outline {
  background: var(--color-paper-white);
  border-color: rgba(25, 23, 23, 0.16);
  color: var(--color-absolute-black);
}

.btn-outline:hover {
  background: var(--color-light-gray);
}

.btn-ghost {
  background: transparent;
  color: var(--color-graphite);
  padding: 8px 16px;
}

.btn-ghost:hover {
  background: var(--color-light-gray);
  color: var(--color-absolute-black);
}

.btn-danger {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.btn-danger:hover {
  background: #fecaca;
}

/* Inputs */
.input-field {
  width: 100%;
  padding: 12px 16px;
  background: var(--color-silver-mist);
  border: 1px solid var(--color-slate-border);
  border-radius: var(--radius-inputs);
  font-family: var(--font-inter);
  font-size: 15px;
  color: var(--color-absolute-black);
  box-sizing: border-box;
  transition: border-color 0.2s;
}

.input-field:focus {
  outline: none;
  border-color: var(--color-feedback-violet);
  background: var(--color-paper-white);
}

/* Badges */
.badge {
  display: inline-flex;
  padding: 4px 12px;
  border-radius: var(--radius-badges);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-violet { background: var(--color-soft-lavender); color: var(--color-feedback-violet); }
.badge-blue { background: var(--color-sky-tint); color: var(--color-agent-blue); }
.badge-amber { background: var(--color-sun-mist); color: var(--color-insight-amber); }

/* Tables */
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: var(--spacing-16);
}

.data-table th {
  padding: 16px;
  text-align: left;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-graphite);
  border-bottom: 1px solid var(--color-silver-mist);
  background: var(--color-light-gray);
}

.data-table th:first-child { border-top-left-radius: 12px; }
.data-table th:last-child { border-top-right-radius: 12px; }

.data-table td {
  padding: 16px;
  border-bottom: 1px solid var(--color-silver-mist);
  font-size: 15px;
}

.data-table tr:last-child td:first-child { border-bottom-left-radius: 12px; }
.data-table tr:last-child td:last-child { border-bottom-right-radius: 12px; }

.data-table tr:hover td {
  background-color: #fafafa;
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(23, 22, 24, 0.4);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal {
  background: var(--color-paper-white);
  padding: 32px;
  border-radius: var(--radius-cards);
  box-shadow: var(--shadow-subtle-2);
  width: 90%;
  max-width: 480px;
}

/* Nav */
.header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-32);
  padding-bottom: var(--spacing-16);
  border-bottom: 1px solid var(--color-silver-mist);
}

.header-bar h2 {
  font-size: var(--text-heading-lg);
  margin-bottom: 0;
}

/* Auth Page */
.auth-page {
  background-color: var(--color-light-gray);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  background: var(--color-paper-white);
  padding: 48px;
  border-radius: var(--radius-cards);
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 400px;
  text-align: center;
}

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