/* ================================================================
   D.A.R.S. Web Flasher — Stylesheet
   Theme: #020101 black + white + #00FF41 green accent
   ================================================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #020101;
  --bg-card:     #0d0d0d;
  --bg-input:    #141414;
  --bg-hover:    #1a1a1a;
  --border:      #2a2a2a;
  --border-hi:   #3a3a3a;
  --green:       #00FF41;
  --green-dim:   #00cc33;
  --green-glow:  rgba(0, 255, 65, 0.15);
  --white:       #ffffff;
  --muted:       #888888;
  --muted-hi:    #aaaaaa;
  --error:       #ff4444;
  --error-bg:    rgba(255, 68, 68, 0.08);
  --success-bg:  rgba(0, 255, 65, 0.07);
  --radius:      8px;
  --radius-lg:   12px;
  --font:        'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono:   'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --transition:  0.2s ease;
}

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg);
  color: var(--white);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--green); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--green-dim); text-decoration: underline; }

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--bg-input);
  color: var(--green);
  padding: 1px 6px;
  border-radius: 4px;
}

/* ---------- Browser Warning ---------- */
.browser-warning {
  background: #1a1000;
  border-bottom: 1px solid #aa6600;
  color: #ffcc44;
  text-align: center;
  padding: 10px 20px;
  font-size: 14px;
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}

.header-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.logo {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  flex-shrink: 0;
  display: block;
}

.header-text h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--white);
}

.subtitle {
  font-size: 0.88rem;
  color: var(--muted);
  margin-top: 2px;
}

/* ---------- Container ---------- */
.container {
  max-width: 720px;
  margin: 36px auto;
  padding: 0 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ---------- Card base ---------- */
.instructions-card,
.flasher-card,
.log-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* ---------- Instructions Toggle ---------- */
.instructions-toggle {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--muted-hi);
  padding: 16px 20px;
  text-align: left;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: color var(--transition), background var(--transition);
  font-family: var(--font);
}

.instructions-toggle:hover { color: var(--white); background: var(--bg-hover); }

.toggle-icon {
  font-size: 0.7rem;
  transition: transform var(--transition);
  color: var(--green);
}

.instructions-toggle[aria-expanded="true"] .toggle-icon { transform: rotate(0deg); }
.instructions-toggle[aria-expanded="false"] .toggle-icon { transform: rotate(-90deg); }

/* ---------- Instructions Body ---------- */
.instructions-body {
  padding: 8px 20px 20px;
  border-top: 1px solid var(--border);
}

.steps-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 4px;
}

.steps-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.step-num {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--green-glow);
  border: 1px solid var(--green-dim);
  color: var(--green);
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.steps-list li div { font-size: 0.9rem; color: var(--muted-hi); }
.steps-list li strong { color: var(--white); }

.info-box {
  margin-top: 16px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
  font-size: 0.875rem;
  color: var(--muted-hi);
}

/* ---------- Flasher Card ---------- */
.flasher-card { padding: 28px; }

/* Step Indicators */
.step-indicators {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 32px;
}

.step-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  opacity: 0.35;
  transition: opacity var(--transition);
}

.step-indicator.active { opacity: 1; }
.step-indicator.done { opacity: 0.7; }

.step-circle {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid var(--border-hi);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--muted);
  transition: all var(--transition);
  background: var(--bg);
}

.step-indicator.active .step-circle {
  border-color: var(--green);
  color: var(--green);
  box-shadow: 0 0 12px var(--green-glow);
}

.step-indicator.done .step-circle {
  border-color: var(--green-dim);
  background: var(--green-dim);
  color: var(--bg);
}

.step-indicator.done .step-circle::before { content: '✓'; }
.step-indicator.done .step-circle > * { display: none; }

.step-indicator span {
  font-size: 0.75rem;
  color: var(--muted);
  font-weight: 500;
}
.step-indicator.active span { color: var(--green); }

.step-divider {
  flex: 1;
  height: 2px;
  background: var(--border);
  max-width: 80px;
  margin: 0 4px;
  margin-bottom: 22px;
}

/* ---------- Step Sections ---------- */
.step-section {
  transition: opacity var(--transition);
}

.step-section.locked {
  opacity: 0.4;
  pointer-events: none;
  user-select: none;
}

.step-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 6px;
}

.step-desc {
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 16px;
}

.step-separator {
  border-top: 1px solid var(--border);
  margin: 24px 0;
}

/* ---------- Device Info ---------- */
.device-info {
  background: var(--bg-input);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 16px;
}

.device-info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
}

.device-info-row + .device-info-row {
  border-top: 1px solid var(--border);
  margin-top: 6px;
  padding-top: 10px;
}

.device-info-row .label {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.device-info-row .value {
  font-size: 0.9rem;
  color: var(--green);
}

.mono { font-family: var(--font-mono); }

/* ---------- License Input ---------- */
.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.license-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  letter-spacing: 0.06em;
  padding: 12px 44px 12px 16px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
}

.license-input::placeholder { color: var(--border-hi); letter-spacing: 0.04em; }

.license-input:focus {
  border-color: var(--green-dim);
  box-shadow: 0 0 0 2px var(--green-glow);
}

.license-input:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.license-input.valid { border-color: var(--green); }
.license-input.invalid { border-color: var(--error); }

.clear-btn {
  position: absolute;
  right: 12px;
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 4px;
  line-height: 1;
  border-radius: 4px;
  transition: color var(--transition);
}
.clear-btn:hover { color: var(--white); }

.key-hint {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 6px;
  min-height: 1.2em;
}
.key-hint.ok { color: var(--green); }
.key-hint.err { color: var(--error); }

/* ---------- T&C Checkbox ---------- */
.tc-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--muted-hi);
  margin-bottom: 20px;
  line-height: 1.5;
}

.tc-label input[type="checkbox"] {
  flex-shrink: 0;
  margin-top: 2px;
  width: 17px;
  height: 17px;
  accent-color: var(--green);
  cursor: pointer;
}

.tc-label input:disabled { cursor: not-allowed; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--green);
  color: var(--bg);
}
.btn-primary:hover { background: var(--green-dim); box-shadow: 0 0 20px var(--green-glow); }

.btn-flash {
  background: var(--green);
  color: var(--bg);
  width: 100%;
  padding: 14px 24px;
  font-size: 1rem;
}
.btn-flash:hover:not(:disabled) {
  background: var(--green-dim);
  box-shadow: 0 0 24px var(--green-glow);
}
.btn-flash:disabled {
  background: var(--bg-hover);
  color: var(--border-hi);
  cursor: not-allowed;
  box-shadow: none;
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--border-hi);
  margin-top: 12px;
}
.btn-secondary:hover { background: var(--bg-hover); }

/* ---------- Progress Area ---------- */
.progress-area {
  margin-top: 24px;
  padding: 20px;
  background: var(--bg-input);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
}

.progress-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 10px;
}

.progress-bar-track {
  width: 100%;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--green);
  border-radius: 3px;
  transition: width 0.3s ease;
  box-shadow: 0 0 8px var(--green-glow);
}

.progress-detail {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 8px;
  font-family: var(--font-mono);
  min-height: 1.2em;
}

/* ---------- Result Banners ---------- */
.result-banner {
  margin-top: 24px;
  padding: 20px;
  border-radius: var(--radius);
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.result-banner.success {
  background: var(--success-bg);
  border: 1px solid var(--green-dim);
}
.result-banner.error {
  background: var(--error-bg);
  border: 1px solid var(--error);
  flex-direction: column;
}

.result-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.result-banner.success .result-icon { background: var(--green); color: var(--bg); }
.result-banner.error .result-icon { background: var(--error); color: #fff; }

.result-text { font-size: 0.9rem; line-height: 1.6; color: var(--muted-hi); }
.result-text strong { color: var(--white); }

/* ---------- Log ---------- */
.log-body {
  border-top: 1px solid var(--border);
  padding: 12px 16px;
}

.log-output {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  max-height: 220px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.7;
}

.log-output .log-green { color: var(--green); }
.log-output .log-red   { color: var(--error); }
.log-output .log-dim   { color: var(--border-hi); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 16px 24px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
}

.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--green); }

/* ---------- Utilities ---------- */
.hidden { display: none !important; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-hi); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .header-inner { gap: 14px; }
  .logo { width: 48px; height: 48px; }
  .header-text h1 { font-size: 1.2rem; }
  .flasher-card { padding: 20px 16px; }
  .step-divider { max-width: 40px; }
  .license-input { font-size: 0.95rem; }
}