/* ===== BurnNote - Styles ===== */

:root {
  --bg: #0a0a1a;
  --bg-card: rgba(20, 20, 42, 0.75);
  --bg-card-hover: rgba(28, 28, 56, 0.85);
  --border: rgba(100, 100, 180, 0.15);
  --border-focus: rgba(124, 91, 254, 0.5);
  --text: #e8e8f0;
  --text-muted: #8888aa;
  --text-dim: #666688;
  --primary: #7c5bfe;
  --primary-glow: rgba(124, 91, 254, 0.3);
  --primary-hover: #6a4ae8;
  --success: #4ade80;
  --success-bg: rgba(74, 222, 128, 0.1);
  --error: #f87171;
  --error-bg: rgba(248, 113, 113, 0.1);
  --warning: #fbbf24;
  --warning-bg: rgba(251, 191, 36, 0.1);
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ===== Stars Background ===== */
.stars {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 30% 50%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1.5px 1.5px at 50% 10%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 70% 70%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1.5px 1.5px at 85% 30%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 20% 80%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 60% 90%, rgba(255,255,255,0.2), transparent),
    radial-gradient(1.5px 1.5px at 90% 60%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 40% 35%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 5% 60%, rgba(255,255,255,0.2), transparent),
    radial-gradient(1px 1px at 95% 10%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 55% 45%, rgba(255,255,255,0.15), transparent),
    radial-gradient(1.5px 1.5px at 75% 15%, rgba(255,255,255,0.35), transparent),
    radial-gradient(1px 1px at 15% 95%, rgba(255,255,255,0.25), transparent);
  animation: twinkle 4s ease-in-out infinite alternate;
}

@keyframes twinkle {
  0% { opacity: 0.6; }
  100% { opacity: 1; }
}

/* ===== Container ===== */
.container {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

/* ===== Header ===== */
.header {
  text-align: center;
  margin-bottom: 36px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.5px;
}

.logo-icon {
  font-size: 32px;
}

.subtitle {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 6px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* ===== Card ===== */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.card-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  text-align: center;
}

.card-desc {
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
  margin-bottom: 24px;
}

/* ===== Forms ===== */
.burn-form {
  margin-top: 20px;
}

.form-group {
  margin-bottom: 20px;
  position: relative;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.required { color: var(--error); }
.optional { color: var(--text-dim); font-weight: 400; font-size: 12px; }

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  font-family: inherit;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--primary-glow);
  background: rgba(255, 255, 255, 0.06);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238888aa' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}

.char-count {
  position: absolute;
  right: 12px;
  bottom: 10px;
  font-size: 11px;
  color: var(--text-dim);
}

.field-hint {
  display: block;
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 520px) {
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .card {
    padding: 24px 20px;
  }
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(100, 100, 180, 0.3);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #5a3ee6);
  border-color: var(--primary);
  color: #fff;
  font-weight: 600;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover), #4c32d6);
  box-shadow: 0 4px 20px var(--primary-glow);
  transform: translateY(-1px);
}

.btn-block {
  width: 100%;
  text-align: center;
  padding: 14px 24px;
  font-size: 15px;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
}

/* ===== Alerts ===== */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 16px;
  border: 1px solid transparent;
}

.alert-error {
  background: var(--error-bg);
  border-color: rgba(248, 113, 113, 0.2);
  color: var(--error);
}

.alert-warning {
  background: var(--warning-bg);
  border-color: rgba(251, 191, 36, 0.2);
  color: var(--warning);
}

/* ===== Result Boxes ===== */
.result-box {
  text-align: center;
  padding: 24px;
}

.result-box.success {
  color: var(--success);
}

.result-box.destroyed {
  color: var(--text-muted);
}

.url-box {
  display: flex;
  gap: 10px;
  margin: 16px 0;
  align-items: stretch;
}

.url-box input {
  flex: 1;
  padding: 10px 14px;
  font-size: 13px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: text;
}

.tip {
  color: var(--text-dim);
  font-size: 12px;
  margin-top: 8px;
}

/* ===== View Page ===== */
.view-header {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.view-badge {
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
}

.view-badge.danger {
  background: var(--error-bg);
  border-color: rgba(248, 113, 113, 0.3);
  color: var(--error);
}

.view-badge.warning {
  background: var(--warning-bg);
  border-color: rgba(251, 191, 36, 0.3);
  color: var(--warning);
}

.content-box {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin-top: 16px;
  overflow-x: auto;
}

.content-box pre {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 14px;
  line-height: 1.7;
  white-space: pre-wrap;
  word-wrap: break-word;
  color: var(--text);
}

.burn-icon {
  font-size: 56px;
  margin-bottom: 12px;
}

.destroy-msg {
  font-size: 15px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ===== Progress Bar (Install) ===== */
.progress-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 36px;
  padding: 0 20px;
}

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.step-num {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
  border: 2px solid var(--border);
  color: var(--text-dim);
  transition: var(--transition);
}

.progress-step.active .step-num {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 0 16px var(--primary-glow);
}

.progress-step.done .step-num {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}

.step-label {
  font-size: 11px;
  color: var(--text-dim);
  white-space: nowrap;
}

.progress-step.active .step-label {
  color: var(--text);
}

.progress-step.done .step-label {
  color: var(--success);
}

.progress-line {
  width: 50px;
  height: 2px;
  background: var(--border);
  margin: 0 8px;
  margin-bottom: 24px;
  transition: var(--transition);
}

.progress-line.done {
  background: var(--success);
}

@media (max-width: 480px) {
  .progress-line {
    width: 30px;
  }
  .step-label {
    font-size: 10px;
  }
}

/* ===== Check List (Install) ===== */
.check-list {
  margin: 20px 0;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.check-item.pass {
  border-color: rgba(74, 222, 128, 0.2);
}

.check-item.fail {
  border-color: rgba(248, 113, 113, 0.2);
  background: var(--error-bg);
}

.check-icon {
  font-size: 18px;
  flex-shrink: 0;
}

.check-label {
  flex: 1;
  font-size: 14px;
}

.check-hint {
  font-size: 12px;
  color: var(--error);
}

/* ===== Footer / Hitokoto ===== */
.footer {
  text-align: center;
  margin-top: 48px;
}

.hitokoto-box {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 20px;
  transition: var(--transition);
  cursor: pointer;
}

.hitokoto-box:hover {
  border-color: rgba(100, 100, 180, 0.3);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.hitokoto-text {
  font-size: 15px;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.7;
  transition: opacity 0.4s;
}

.hitokoto-from {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 8px;
}

.footer-meta {
  font-size: 12px;
  color: var(--text-dim);
}

.footer-meta a {
  color: var(--primary);
  text-decoration: none;
}

.footer-meta a:hover {
  text-decoration: underline;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(100, 100, 180, 0.3);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(100, 100, 180, 0.5);
}

/* ===== Selection ===== */
::selection {
  background: var(--primary);
  color: #fff;
}

/* ===== Animations ===== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.card {
  animation: fadeIn 0.4s ease-out;
}

.hitokoto-text,
.hitokoto-from {
  animation: fadeIn 0.5s ease-out;
}