@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --bg: #0f1117;
  --bg-subtle: #161822;
  --surface: rgba(255,255,255,.05);
  --surface-hover: rgba(255,255,255,.08);
  --surface-border: rgba(255,255,255,.08);
  --glass: rgba(22,24,34,.72);
  --glass-border: rgba(255,255,255,.1);
  --ink: #e8eaed;
  --ink-secondary: #9ca3af;
  --ink-muted: #6b7280;
  --accent: #2dd4bf;
  --accent-dim: rgba(45,212,191,.15);
  --accent-glow: rgba(45,212,191,.25);
  --accent-dark: #14b8a6;
  --danger: #f87171;
  --danger-dim: rgba(248,113,113,.12);
  --danger-border: rgba(248,113,113,.25);
  --success: #34d399;
  --success-dim: rgba(52,211,153,.12);
  --success-border: rgba(52,211,153,.3);
  --warning: #fbbf24;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: .2s cubic-bezier(.4,0,.2,1);
}

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

body {
  min-height: 100vh;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(45,212,191,.08), transparent),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(99,102,241,.06), transparent);
  pointer-events: none;
  z-index: 0;
}

main {
  position: relative;
  z-index: 1;
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
  padding: 40px 0 60px;
}

/* Header */
.header { margin-bottom: 32px; }

.header-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 8px;
}

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

.logo-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), #6366f1);
  display: grid;
  place-items: center;
  font-size: 1.3rem;
  box-shadow: 0 0 24px rgba(45,212,191,.2);
}

h1 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -.02em;
  background: linear-gradient(135deg, #fff 30%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--ink-muted);
  font-size: .9rem;
  margin-top: 2px;
}

/* Status toast */
.status-toast {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 100;
  max-width: 400px;
  padding: 14px 20px;
  border-radius: var(--radius);
  font-size: .9rem;
  font-weight: 500;
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  background: var(--glass);
  color: var(--ink);
  transform: translateX(calc(100% + 40px));
  opacity: 0;
  transition: transform .35s cubic-bezier(.4,0,.2,1), opacity .35s ease;
  pointer-events: none;
}

.status-toast.visible {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}

.status-toast.error {
  border-color: var(--danger-border);
  background: rgba(248,113,113,.1);
  color: var(--danger);
}

.status-toast.ok {
  border-color: var(--success-border);
  background: var(--success-dim);
  color: var(--success);
}

/* Steps indicator */
.steps {
  display: flex;
  gap: 8px;
  margin-bottom: 28px;
}

.step-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 99px;
  font-size: .82rem;
  font-weight: 600;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  color: var(--ink-muted);
  transition: all var(--transition);
  cursor: default;
}

.step-pill .num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: .75rem;
  font-weight: 700;
  background: var(--surface-hover);
  color: var(--ink-secondary);
}

.step-pill.active {
  background: var(--accent-dim);
  border-color: rgba(45,212,191,.2);
  color: var(--accent);
}

.step-pill.active .num {
  background: var(--accent);
  color: var(--bg);
}

.step-connector {
  display: flex;
  align-items: center;
  color: var(--ink-muted);
  font-size: .7rem;
}

/* Layout */
.layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 20px;
  align-items: start;
}

/* Glass card */
.card {
  background: var(--glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color var(--transition);
}

.card:hover { border-color: rgba(255,255,255,.14); }

.card + .card { margin-top: 20px; }

.card-title {
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title .icon { font-size: 1.1rem; }

.card-divider {
  height: 1px;
  background: var(--surface-border);
  margin: 20px 0;
}

/* Form elements */
label {
  display: block;
  margin-bottom: 6px;
  font-size: .78rem;
  font-weight: 600;
  color: var(--ink-secondary);
  text-transform: uppercase;
  letter-spacing: .04em;
}

label + label { margin-top: 14px; }

input[type="text"],
input[type="password"],
select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: .9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

input[type="text"]:focus,
input[type="password"]:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

input[type="text"]::placeholder { color: var(--ink-muted); }
input[type="password"]::placeholder { color: var(--ink-muted); }

.hidden { display: none !important; }

/* Login */
.login-screen {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-panel {
  width: min(420px, 100%);
  padding: 28px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  background: var(--glass);
  backdrop-filter: blur(20px);
}

.login-logo {
  margin-bottom: 24px;
}

.login-submit {
  width: 100%;
  justify-content: center;
  margin-top: 20px;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236b7280' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
  cursor: pointer;
}

select option {
  background: var(--bg-subtle);
  color: var(--ink);
}

input[type="color"] {
  -webkit-appearance: none;
  appearance: none;
  width: 40px;
  height: 40px;
  border: 2px solid var(--surface-border);
  border-radius: var(--radius-sm);
  padding: 2px;
  background: transparent;
  cursor: pointer;
  transition: border-color var(--transition);
}

input[type="color"]:hover { border-color: var(--accent); }
input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
input[type="color"]::-webkit-color-swatch { border: none; border-radius: 4px; }

/* Buttons */
button {
  font: inherit;
  font-size: .85rem;
  font-weight: 600;
  padding: 9px 16px;
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  transition: all var(--transition);
  outline: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

button:hover {
  background: var(--surface-hover);
  border-color: rgba(255,255,255,.15);
  transform: translateY(-1px);
}

button:focus-visible {
  box-shadow: 0 0 0 3px var(--accent-dim);
}

button:active { transform: translateY(0); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  border-color: var(--accent);
  color: var(--bg);
  font-weight: 700;
  box-shadow: 0 0 20px rgba(45,212,191,.15);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent), #5eead4);
  box-shadow: 0 0 28px rgba(45,212,191,.25);
  border-color: var(--accent);
}

.btn-primary:disabled {
  opacity: .5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-danger {
  color: var(--danger);
  border-color: var(--danger-border);
  background: var(--danger-dim);
}

.btn-danger:hover {
  background: rgba(248,113,113,.2);
  border-color: rgba(248,113,113,.4);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  border-radius: var(--radius-sm);
}

.btn-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}

/* Color rows */
.color-row {
  display: grid;
  grid-template-columns: 1fr 40px minmax(90px, 110px) 36px;
  gap: 8px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  margin-bottom: 8px;
  animation: slideIn .25s ease;
}

.fallback-grid {
  grid-template-columns: 40px minmax(90px, 110px) 36px;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.color-row input[type="text"] {
  background: rgba(255,255,255,.04);
}

/* Panel header */
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.panel-head .card-title { margin-bottom: 0; }

.hint {
  color: var(--ink-muted);
  font-size: .82rem;
  margin: -8px 0 14px;
}

.empty-state {
  text-align: center;
  padding: 20px 12px;
  color: var(--ink-muted);
  font-size: .85rem;
}

/* Dropzone */
.dropzone {
  border: 2px dashed var(--surface-border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.dropzone:hover,
.dropzone.dragover {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.dropzone-icon {
  font-size: 2rem;
  margin-bottom: 8px;
  opacity: .6;
}

.dropzone-text {
  color: var(--ink-secondary);
  font-size: .88rem;
}

.dropzone-text strong {
  color: var(--accent);
}

.dropzone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.file-info {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-sm);
  margin-top: 10px;
  font-size: .88rem;
  color: var(--accent);
  animation: slideIn .25s ease;
}

.file-info .file-icon { font-size: 1.2rem; }
.file-info .file-name { flex: 1; font-weight: 500; }

.file-info .file-remove {
  background: none;
  border: none;
  color: var(--ink-muted);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 0;
  width: auto;
  height: auto;
}

.file-info .file-remove:hover { color: var(--danger); }

/* Spinner */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin .6s linear infinite;
}

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

/* Confirm overlay */
.confirm-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  animation: fadeIn .2s ease;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.confirm-box {
  background: var(--bg-subtle);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 28px;
  max-width: 380px;
  width: calc(100% - 40px);
  text-align: center;
  animation: popIn .25s ease;
}

@keyframes popIn {
  from { opacity: 0; transform: scale(.95); }
  to { opacity: 1; transform: scale(1); }
}

.confirm-box p {
  margin-bottom: 20px;
  color: var(--ink-secondary);
  font-size: .95rem;
}

.confirm-box .btn-row { justify-content: center; margin-top: 0; }

/* Right column stack */
.stack { display: grid; gap: 20px; }

/* Responsive */
@media (max-width: 840px) {
  main { width: calc(100% - 24px); padding-top: 24px; }
  .layout { grid-template-columns: 1fr; }
  .header-top { flex-direction: column; }
  h1 { font-size: 1.5rem; }
  .steps { flex-wrap: wrap; }
  .step-connector { display: none; }
  .status-toast { left: 16px; right: 16px; max-width: none; top: 12px; }
}