:root {
  --ink: #0b0b0d;
  --paper: #fbf9f5;
  --gold: #d4b15f;
  --gold-dark: #a1782c;
  --silver: #bfc7d0;
  --silver-dark: #8b939c;
  --bronze: #c07a3e;
  --bronze-dark: #8d5426;
  --blue: #5068b8;
  --blue-dark: #2d3f7d;
  --shadow: rgba(8, 10, 12, 0.2);
  --muted: #5c626a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Manrope", "Inter", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: #0b0e12;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 24px 0;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand-title {
  font-family: "Cinzel", serif;
  font-size: 16px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #f6f2e9;
}

.brand-subtitle {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(246, 242, 233, 0.6);
}

.site-logo {
  height: 60px;
  width: auto;
}

.site-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.site-nav a {
  color: #f6f2e9;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.header-actions a {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(246, 242, 233, 0.75);
}

.site-nav .nav-btn {
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid rgba(214, 201, 168, 0.4);
  background: rgba(16, 20, 27, 0.6);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.25);
  font-weight: 600;
  letter-spacing: 0.14em;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.site-nav .nav-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.35);
}

.site-nav .nav-btn.primary {
  background: linear-gradient(135deg, #e2c87a, #b58834);
  color: #111;
  border-color: transparent;
}

.site-footer {
  margin-top: 40px;
  padding: 32px 24px 20px;
  background: #0f131a;
  color: #c1b7a3;
  font-size: 13px;
  letter-spacing: 0.06em;
  border-top: 1px solid rgba(212, 175, 95, 0.2);
}

.site-footer .footer-logo {
  height: 36px;
  margin-bottom: 12px;
  display: block;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-title {
  font-family: "Cinzel", serif;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #f6f2e9;
  margin-bottom: 6px;
}

.footer-link {
  color: rgba(246, 242, 233, 0.7);
  font-size: 12px;
}

.footer-bottom {
  margin-top: 24px;
  text-align: center;
  color: rgba(246, 242, 233, 0.55);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

@media (max-width: 960px) {
  .site-header {
    flex-wrap: wrap;
  }

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

@media (max-width: 640px) {
  .site-header {
    padding: 18px 16px 0;
  }

  .header-brand {
    width: 100%;
    justify-content: center;
    text-align: center;
    flex-direction: column;
  }

  .site-nav {
    justify-content: center;
  }

  .header-actions {
    justify-content: center;
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

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

img {
  max-width: 100%;
  display: block;
}

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

.page-shell {
  min-height: 100vh;
  padding: 32px 24px 64px;
}

.page-title {
  font-family: "Cinzel", "Cormorant Garamond", serif;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #f6f2e9;
  margin: 0 0 8px;
}

.page-subtitle {
  color: #c8c0b3;
  margin: 0 0 24px;
}

.admin-grid {
  display: grid;
  grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
  gap: 24px;
}

.card {
  background: #f7f5f0;
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.3);
}

.card.dark {
  background: #10141b;
  color: #f4efe6;
}

.card h3 {
  margin: 0 0 16px;
  font-size: 18px;
  letter-spacing: 0.02em;
}

.form-grid {
  display: grid;
  gap: 14px;
}

.field label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #5c6067;
  margin-bottom: 6px;
}

.card.dark .field label {
  color: #bdb7a8;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #d7d1c6;
  background: #fff;
  color: var(--ink);
  font-size: 14px;
}

.card.dark .field input,
.card.dark .field select,
.card.dark .field textarea {
  background: #141925;
  border-color: #2b313a;
  color: #f6f2e9;
}

.field textarea {
  min-height: 80px;
  resize: vertical;
}

.inline-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.inline-row .field {
  flex: 1 1 140px;
}

.btn {
  padding: 10px 16px;
  border-radius: 10px;
  border: none;
  background: linear-gradient(135deg, #e2c87a, #b58834);
  color: #111;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn.secondary {
  background: #1b212b;
  color: #f1ede3;
  box-shadow: none;
}

.btn.ghost {
  background: transparent;
  color: #d6c9a8;
  border: 1px solid rgba(214, 201, 168, 0.4);
  box-shadow: none;
}

.btn.small {
  padding: 6px 10px;
  font-size: 12px;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid #2a2f38;
  font-size: 13px;
}

.table th {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 11px;
  color: #bfb7a6;
}

.table td {
  color: #f1ede3;
}

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

.preview-thumb {
  width: 72px;
  height: 72px;
  border-radius: 10px;
  background: #e7e1d6;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px dashed #cbbf9c;
}

.preview-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.notice {
  font-size: 12px;
  color: #b0a48e;
}

.auth-overlay {
  position: fixed;
  inset: 0;
  background: rgba(9, 12, 16, 0.94);
  display: grid;
  place-items: center;
  z-index: 999;
}

.auth-card {
  background: #10141b;
  padding: 28px;
  border-radius: 18px;
  border: 1px solid rgba(214, 201, 168, 0.25);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  width: min(420px, 90vw);
  text-align: center;
}

.auth-card h2 {
  margin: 0 0 8px;
  font-family: "Cinzel", serif;
  letter-spacing: 0.1em;
  color: #f6f1e6;
}

.auth-card p {
  margin: 0 0 16px;
  color: #c1b7a3;
}

.auth-card input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #2c3441;
  background: #0e1218;
  color: #f1ede3;
  margin-bottom: 12px;
}

.auth-card .error {
  color: #d8a06f;
  font-size: 12px;
  margin-top: 8px;
}

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(216, 185, 114, 0.6), transparent);
  margin: 14px 0;
}

/* Certificate styles */

.certificate-page {
  background: #111317;
  padding: 24px;
  min-height: 100vh;
}

.certificate-shell {
  margin: 0 auto;
  width: 297mm;
  max-width: 1100px;
}

.certificate {
  position: relative;
  width: 297mm;
  height: 210mm;
  background: var(--paper);
  color: var(--ink);
  padding: 18mm 20mm 16mm;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  box-shadow: 0 30px 60px var(--shadow);
  backdrop-filter: blur(6px);
}

.certificate::before {
  content: "";
  position: absolute;
  inset: 7mm;
  border: 1.5mm solid rgba(12, 12, 14, 0.9);
  border-radius: 12px;
  pointer-events: none;
}

.certificate::after {
  content: "";
  position: absolute;
  inset: 11mm;
  border: 0.5mm solid rgba(197, 166, 91, 0.8);
  border-radius: 10px;
  pointer-events: none;
}

.texture {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
    linear-gradient(120deg, rgba(12, 12, 14, 0.05), transparent 60%);
  background-size: 16px 16px, 100% 100%;
  opacity: 0.45;
  pointer-events: none;
}

.watermark {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: "Cinzel", serif;
  font-size: 84px;
  letter-spacing: 0.2em;
  color: rgba(12, 12, 14, 0.04);
  transform: rotate(-15deg) scale(1.2);
  text-transform: uppercase;
  pointer-events: none;
  animation: watermarkFloat 14s ease-in-out infinite;
}

.cert-top {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  align-items: center;
  gap: 12px;
  z-index: 2;
}

.cert-title {
  font-family: "Cinzel", serif;
  font-size: 28px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-align: left;
}

@keyframes watermarkFloat {
  0% {
    transform: rotate(-15deg) scale(1.2);
  }
  50% {
    transform: rotate(-13deg) scale(1.22);
  }
  100% {
    transform: rotate(-15deg) scale(1.2);
  }
}

.cert-title span {
  display: block;
  font-size: 12px;
  letter-spacing: 0.4em;
  color: var(--muted);
  margin-top: 6px;
}

.logo-wrap {
  text-align: center;
}

.logo-wrap .logo-mark {
  width: 68px;
  height: 68px;
  margin: 0 auto 6px;
  object-fit: contain;
}

.logo-wrap .academy-name {
  font-family: "Cinzel", serif;
  letter-spacing: 0.14em;
  font-size: 15px;
  text-transform: uppercase;
}

.logo-wrap .academy-tagline {
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--muted);
  text-transform: uppercase;
}

.rank-badge {
  justify-self: end;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff5d6, var(--accent));
  display: grid;
  place-items: center;
  color: #111;
  font-family: "Cinzel", serif;
  font-weight: 700;
  text-align: center;
  border: 6px solid rgba(255, 255, 255, 0.7);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.25);
}

.rank-badge span {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.rank-badge strong {
  display: block;
  font-size: 18px;
}

.cert-body {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 8px 20px;
}

.student-name {
  font-family: "Cormorant Garamond", serif;
  font-size: 48px;
  margin: 8px 0 6px;
  letter-spacing: 0.04em;
}

.cert-statement {
  font-size: 16px;
  line-height: 1.7;
  max-width: 820px;
  margin: 0 auto;
  color: #2b2f35;
}

.cert-statement strong {
  color: var(--ink);
}

.achievement-line {
  margin-top: 16px;
  font-size: 18px;
  font-style: italic;
  color: var(--accent-dark);
  letter-spacing: 0.02em;
}

.trust-line {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.details-row {
  margin-top: 16px;
  display: flex;
  justify-content: center;
  gap: 20px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.student-photo {
  position: absolute;
  left: 20mm;
  top: 64mm;
  width: 90px;
  height: 110px;
  border-radius: 10px;
  overflow: hidden;
  border: 2px solid rgba(0, 0, 0, 0.2);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
  background: #f0ece5;
}

.student-photo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.cert-footer {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.2fr 0.8fr;
  align-items: end;
  gap: 16px;
}

.signature-block {
  text-align: center;
}

.signature-line {
  height: 70px;
  margin-bottom: 6px;
  display: grid;
  place-items: center;
}

.signature-line img {
  width: 100%;
  height: 100%;
  max-width: 180px;
  max-height: 70px;
  object-fit: contain;
}

.signature-placeholder {
  width: 160px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.5);
  height: 1px;
}

.signature-name {
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.signature-title {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cert-meta {
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.qr-block {
  justify-self: end;
  text-align: right;
}

.qr-code {
  width: 90px;
  height: 90px;
  margin-left: auto;
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.2);
  display: grid;
  place-items: center;
}

.qr-code canvas,
.qr-code img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.qr-caption {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
  margin-top: 6px;
}

.theme-gold {
  --accent: var(--gold);
  --accent-dark: var(--gold-dark);
}

.theme-silver {
  --accent: var(--silver);
  --accent-dark: var(--silver-dark);
}

.theme-bronze {
  --accent: var(--bronze);
  --accent-dark: var(--bronze-dark);
}

.theme-blue {
  --accent: var(--blue);
  --accent-dark: var(--blue-dark);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 16px auto 0;
  max-width: 1100px;
}

.controls .btn {
  flex: 1 1 160px;
  text-align: center;
}

.verify-shell {
  max-width: 780px;
  margin: 0 auto;
  padding: 40px 0;
}

.verify-card {
  background: #f7f5f0;
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.verify-result {
  margin-top: 18px;
  padding: 16px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid #d8d2c6;
}

.verify-qr {
  display: grid;
  place-items: center;
  gap: 8px;
}

@media (max-width: 1200px) {
  .certificate-shell,
  .certificate {
    width: 100%;
  }

  .certificate {
    height: auto;
    min-height: 70vh;
  }
}

@media (max-width: 960px) {
  .admin-grid {
    grid-template-columns: 1fr;
  }

  .cert-top {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .cert-title {
    text-align: center;
  }

  .rank-badge {
    justify-self: center;
  }

  .student-photo {
    position: static;
    margin: 18px auto 0;
  }

  .cert-footer {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .qr-block {
    justify-self: center;
  }
}

@media print {
  body {
    background: #fff;
  }

  .no-print,
  .controls {
    display: none !important;
  }

  .certificate-page {
    padding: 0;
  }

  .certificate {
    box-shadow: none;
  }

  @page {
    size: A4 landscape;
    margin: 0;
  }
}