/* ── Keyframes ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.4; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes popIn {
  0%   { transform: scale(0.6); opacity: 0; }
  70%  { transform: scale(1.08); }
  100% { transform: scale(1); opacity: 1; }
}
@keyframes panelEnter {
  from { opacity: 0; transform: translateX(10px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes slideAlert {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes successPop {
  0%   { transform: scale(0); opacity: 0; }
  60%  { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(255,255,255,0.22), 0 0 40px rgba(255,255,255,0.10); }
  50%      { box-shadow: 0 0 30px rgba(255,255,255,0.35), 0 0 60px rgba(255,255,255,0.18); }
}

/* ── Steps ── */
.steps {
  display: flex;
  align-items: flex-start;
  margin-bottom: 22px;
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.step-num-wrap {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--glass-bg-2);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.step-num-label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  color: var(--ink-muted);
  transition: color 0.2s ease;
}

.step-name {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 11px;
  color: var(--ink-muted);
  transition: color 0.2s ease;
}

/* Active */
.step-item.active .step-num-wrap {
  background: var(--accent-grad);
  border-color: transparent;
  animation: glowPulse 1.6s ease infinite;
}
.step-item.active .step-num-label { color: #0A0A0C; }
.step-item.active .step-name { color: var(--ink); font-weight: 600; }

/* Done */
.step-item.done .step-num-wrap {
  background: linear-gradient(135deg, #FFFFFF, #C7C7D1);
  border-color: transparent;
  box-shadow: 0 0 20px rgba(255,255,255,0.28);
}
.step-item.done .step-num-label {
  color: transparent;
  font-size: 0;
}
.step-item.done .step-num-wrap::after {
  content: '✓';
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: #0A0A0C;
  animation: popIn 0.35s ease both;
}
.step-item.done .step-name { color: var(--ink-2); }

/* Connector */
.step-connector {
  flex: 1;
  height: 3px;
  border-radius: 999px;
  background: rgba(255,255,255,0.1);
  margin: 0 8px;
  margin-top: 18px;
  position: relative;
  overflow: hidden;
}
.step-connector::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent-grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s ease;
}
.step-connector.done::after { transform: scaleX(1); }

/* ── Panel ── */
.step-panel { display: none; }
.step-panel.active {
  display: block;
  animation: panelEnter 0.3s ease both;
}

/* ── Tombol utama — liquid glass gradient silver→abu→putih, teks gelap
       untuk kontras di atas permukaan terang, bertekstur (bukan flat) ── */
.btn-glass {
  position: relative;
  width: 100%;
  padding: 16px 20px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14.5px;
  color: #0A0A0C;
  cursor: pointer;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: var(--r-md);
  background: var(--accent-grad);
  background-size: 200% 200%;
  box-shadow: var(--glow-magenta);
  letter-spacing: 0.01em;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-position 0.4s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  overflow: hidden;
}

.btn-glass::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.35), rgba(255,255,255,0) 55%);
  pointer-events: none;
}

.btn-glass:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--glow-magenta), var(--glow-aqua);
  background-position: 100% 50%;
}

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

.btn-glass:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Spinner */
.btn-glass .btn-spinner {
  display: none;
  width: 15px;
  height: 15px;
  border: 2px solid rgba(10,10,12,0.25);
  border-top-color: #0A0A0C;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.btn-glass.loading .btn-spinner { display: inline-block; }
.btn-glass.loading .btn-label { opacity: 0.75; }

/* ── Alert (dark glass chip) ── */
.alert { display: none; margin-bottom: 16px; }
.alert.show {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 13px 15px;
  font-size: 12.5px;
  line-height: 1.5;
  border-radius: var(--r-md);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  animation: slideAlert 0.25s ease both;
}
.alert-error {
  background: rgba(255,77,109,0.14);
  border-color: rgba(255,77,109,0.35);
  color: #FF9FB4;
}
.alert-ok {
  background: rgba(46,230,168,0.12);
  border-color: rgba(46,230,168,0.35);
  color: var(--green);
}
.alert-icon { font-size: 15px; flex-shrink: 0; line-height: 1; }

/* ── Result ── */
.result-mark {
  width: 68px;
  height: 68px;
  margin: 0 auto 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  color: #0A0A0C;
  background: linear-gradient(135deg, #FFFFFF, #C7C7D1);
  box-shadow: 0 0 40px rgba(255,255,255,0.35);
  animation: successPop 0.5s ease 0.1s both;
}
.result-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  text-align: center;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.result-sub {
  font-size: 13px;
  color: var(--ink-muted);
  text-align: center;
  margin-bottom: 26px;
}

/* ── Restart button — dark glass outline ── */
.btn-ghost {
  width: 100%;
  margin-top: 12px;
  padding: 13px;
  border: 1px solid var(--glass-border);
  border-radius: var(--r-md);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 12.5px;
  color: var(--ink-muted);
  background: var(--glass-bg-2);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}
.btn-ghost:hover {
  color: var(--accent-2);
  border-color: var(--accent-2);
  box-shadow: var(--glow-aqua);
  transform: translateY(-1px);
}
.btn-ghost:active { transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}