/* ============================================================
   GLOBAL RESET & BASE
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --white:        #ffffff;
  --bg:           #f7f8fc;
  --text-primary: #1a1d2e;
  --text-secondary:#6b7280;
  --text-muted:   #9ca3af;

  --grad-start:   #6366f1;
  --grad-mid:     #8b5cf6;
  --grad-end:     #ec4899;
  --grad-btn:     linear-gradient(135deg, #6366f1, #8b5cf6, #ec4899);
  --grad-accent:  linear-gradient(135deg, #a5f3fc, #c4b5fd, #fbcfe8);

  --card-shadow:  0 4px 32px rgba(99, 102, 241, 0.10), 0 1px 4px rgba(0,0,0,0.06);
  --card-shadow-hover: 0 8px 48px rgba(99, 102, 241, 0.18), 0 2px 8px rgba(0,0,0,0.08);

  --radius-lg:    20px;
  --radius-md:    14px;
  --radius-sm:    10px;

  --transition:   0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  background-color: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  position: relative;
  overflow-x: hidden;
}

/* ============================================================
   BACKGROUND DECORATION (Gradient blur blobs)
   ============================================================ */
body::before,
body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}
body::before {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #a5b4fc, #c4b5fd);
  top: -140px;
  left: -140px;
}
body::after {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, #fbcfe8, #a5f3fc);
  bottom: -120px;
  right: -120px;
}

.blob-mid {
  position: fixed;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, #c4b5fd55, #6ee7b755);
  filter: blur(70px);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.25;
  pointer-events: none;
  z-index: 0;
}

/* ============================================================
   LAYOUT WRAPPER
   ============================================================ */
.app-wrapper {
  width: 100%;
  max-width: 480px;
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ============================================================
   HEADER / BRANDING
   ============================================================ */
.app-header {
  text-align: center;
  margin-bottom: 4px;
}

.app-header .badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, #ede9fe, #fce7f3);
  border: 1px solid #e9d5ff;
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 12px;
  font-weight: 600;
  color: #7c3aed;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
  text-transform: uppercase;
}

.app-header .badge svg {
  width: 14px;
  height: 14px;
}

.app-header h1 {
  font-size: clamp(24px, 6vw, 32px);
  font-weight: 800;
  line-height: 1.2;
  background: var(--grad-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.app-header p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   CARD BASE
   ============================================================ */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  padding: 32px 28px;
  border: 1px solid rgba(99, 102, 241, 0.08);
  transition: box-shadow var(--transition);
}

/* ============================================================
   SEARCH FORM CARD
   ============================================================ */
.search-card .card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--grad-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

.search-card .card-icon svg {
  width: 26px;
  height: 26px;
  color: white;
}

.search-card h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.search-card .subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ============================================================
   FORM ELEMENTS
   ============================================================ */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.form-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.2px;
}

.form-label span {
  color: #ec4899;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 14px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  pointer-events: none;
  transition: color var(--transition);
}

.input-icon svg {
  width: 18px;
  height: 18px;
}

#nisn-input {
  width: 100%;
  padding: 14px 14px 14px 44px;
  border: 2px solid #e5e7eb;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  background: #f9fafb;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  letter-spacing: 1px;
}

#nisn-input::placeholder {
  color: var(--text-muted);
  letter-spacing: 0;
  font-weight: 400;
}

#nisn-input:focus {
  border-color: #8b5cf6;
  background: var(--white);
  box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.12);
}

#nisn-input:focus ~ .input-icon,
.input-wrapper:focus-within .input-icon {
  color: #8b5cf6;
}

#nisn-input.input-error {
  border-color: #f87171;
  background: #fff7f7;
  box-shadow: 0 0 0 4px rgba(248, 113, 113, 0.10);
}

.error-msg {
  font-size: 12px;
  color: #ef4444;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 5px;
  min-height: 16px;
  transition: opacity var(--transition);
}

.error-msg svg {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
}

.error-msg:empty { opacity: 0; }

/* ============================================================
   BUTTON
   ============================================================ */
.btn-primary {
  width: 100%;
  padding: 15px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--grad-btn);
  color: white;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.40);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  letter-spacing: 0.2px;
  margin-top: 4px;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--transition);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(99, 102, 241, 0.50);
}

.btn-primary:hover:not(:disabled)::before {
  background: rgba(255,255,255,0.10);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.btn-primary svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* ============================================================
   SPINNER (Loading State)
   ============================================================ */
.spinner {
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(255,255,255,0.4);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

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

/* ============================================================
   RESULT CARD
   ============================================================ */
.result-card {
  animation: slideUp 0.35s cubic-bezier(0.4, 0, 0.2, 1) both;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Result: header strip */
.result-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid #f3f4f6;
}

.result-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--grad-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.30);
}

.result-avatar svg {
  width: 26px;
  height: 26px;
  color: white;
}

.result-header-text .result-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
}

.result-header-text .result-nisn {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 2px;
}

/* Nilai grid */
.nilai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.nilai-item {
  border-radius: var(--radius-md);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
  overflow: hidden;
}

.nilai-item.bahasa {
  background: linear-gradient(135deg, #eff6ff, #ede9fe);
  border: 1px solid #ddd6fe;
}

.nilai-item.matematika {
  background: linear-gradient(135deg, #fdf4ff, #fce7f3);
  border: 1px solid #f5d0fe;
}

.nilai-item .mata-pelajaran {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
}

.nilai-item.bahasa .mata-pelajaran { color: #6366f1; }
.nilai-item.matematika .mata-pelajaran { color: #a21caf; }

.nilai-item .nilai-angka {
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
}

.nilai-item.bahasa .nilai-angka {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nilai-item.matematika .nilai-angka {
  background: linear-gradient(135deg, #a21caf, #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nilai-item .nilai-label {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Grade badge (lama, dipertahankan) */
.grade-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 50px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.4px;
  margin-top: 2px;
}

/* Kriteria badge (Baik / Memadai / Kurang) */
.kriteria-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 50px;
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.4px;
  margin-top: 4px;
}

.kriteria-baik {
  background: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.kriteria-memadai {
  background: #fef9c3;
  color: #854d0e;
  border: 1px solid #fde68a;
}

.kriteria-kurang {
  background: #ffe4e6;
  color: #9f1239;
  border: 1px solid #fecdd3;
}

.grade-A  { background: #d1fae5; color: #065f46; }
.grade-B  { background: #dbeafe; color: #1e40af; }
.grade-C  { background: #fef9c3; color: #854d0e; }
.grade-D  { background: #ffe4e6; color: #9f1239; }

/* Info row (No. Peserta & TTL) */
.info-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
  background: #f9fafb;
  border: 1px solid #f3f4f6;
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.info-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.info-label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}

.info-label svg {
  width: 14px;
  height: 14px;
  color: #8b5cf6;
  flex-shrink: 0;
}

.info-value {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  text-align: right;
  word-break: break-word;
}

/* Average row */
.rata-rata-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, #f8faff, #fdf4ff);
  border: 1px solid #e9d5ff;
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.rata-rata-row .label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.rata-rata-row .value {
  font-size: 20px;
  font-weight: 800;
  background: var(--grad-btn);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================================
   ERROR CARD
   ============================================================ */
.error-card {
  animation: slideUp 0.35s cubic-bezier(0.4, 0, 0.2, 1) both;
  text-align: center;
  padding: 36px 28px;
}

.error-card .error-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, #fff1f2, #ffe4e6);
  border: 2px solid #fecdd3;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.error-card .error-icon svg {
  width: 28px;
  height: 28px;
  color: #f43f5e;
}

.error-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.error-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.btn-reset {
  margin-top: 20px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border: 2px solid #e9d5ff;
  border-radius: 50px;
  background: white;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  color: #7c3aed;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-reset:hover {
  background: #f5f3ff;
  border-color: #c4b5fd;
}

/* ============================================================
   FOOTER
   ============================================================ */
.app-footer {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ============================================================
   UTILITY — HIDDEN
   ============================================================ */
.hidden {
  display: none !important;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 480px) {
  body { padding: 20px 12px; }

  .card { padding: 24px 20px; }

  .app-header h1 { font-size: 26px; }

  .nilai-grid { grid-template-columns: 1fr 1fr; gap: 10px; }

  .nilai-item .nilai-angka { font-size: 30px; }
}

@media (max-width: 360px) {
  .nilai-grid { grid-template-columns: 1fr; }
}