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

:root {
  --bg:           #0a0a12;
  --surface:      rgba(255,255,255,.05);
  --surface-2:    rgba(255,255,255,.08);
  --border:       rgba(255,255,255,.1);
  --border-2:     rgba(255,255,255,.15);
  --text:         #f0f0f8;
  --text-muted:   rgba(240,240,248,.55);
  --purple:       #a78bfa;
  --blue:         #38bdf8;
  --green:        #34d399;
  --red:          #f87171;
  --gold:         #fbbf24;
  --radius:       1.25rem;
  --radius-sm:    .75rem;
  --shadow:       0 8px 32px rgba(0,0,0,.4);
  --glow:         0 0 40px rgba(167,139,250,.15);
}

html { font-size: 16px; -webkit-tap-highlight-color: transparent; }

body {
  font-family: 'Outfit', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  overflow-x: hidden;
  position: relative;
}

/* ── Background Orbs ─────────────────────────────────────────────── */
.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
  animation: orbFloat 8s ease-in-out infinite;
}
.orb1 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(167,139,250,.25) 0%, transparent 70%);
  top: -100px; left: -100px;
  animation-delay: 0s;
}
.orb2 {
  width: 350px; height: 350px;
  background: radial-gradient(circle, rgba(56,189,248,.2) 0%, transparent 70%);
  bottom: -80px; right: -80px;
  animation-delay: -3s;
}
.orb3 {
  width: 250px; height: 250px;
  background: radial-gradient(circle, rgba(52,211,153,.15) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  animation-delay: -6s;
}
@keyframes orbFloat {
  0%,100% { transform: translate(0,0); }
  50%      { transform: translate(20px, -20px); }
}
.orb3 { animation-name: orbFloat3; }
@keyframes orbFloat3 {
  0%,100% { transform: translate(-50%,-50%) scale(1); }
  50%      { transform: translate(-50%,-50%) scale(1.15); }
}

/* ── Layout ──────────────────────────────────────────────────────── */
.app-wrapper {
  position: relative;
  z-index: 1;
  max-width: 500px;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ── Header ──────────────────────────────────────────────────────── */
.app-header {
  display: flex;
  align-items: center;
  gap: .875rem;
  padding: 1rem 0 .5rem;
}
.logo-ring {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--glow);
}
.app-title {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.app-subtitle {
  font-size: .8rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: .15rem;
}

/* ── Steps ───────────────────────────────────────────────────────── */
.steps-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: .75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(16px);
}
.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .3rem;
  opacity: .45;
  transition: opacity .3s;
  min-width: 64px;
}
.step.active  { opacity: 1; }
.step.done    { opacity: .75; }
.step-dot {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--surface-2);
  border: 2px solid var(--border-2);
  display: flex; align-items: center; justify-content: center;
  font-size: .8rem;
  font-weight: 700;
  transition: all .3s;
}
.step.active .step-dot {
  background: linear-gradient(135deg, var(--purple), var(--blue));
  border-color: transparent;
  box-shadow: 0 0 16px rgba(167,139,250,.5);
}
.step.done .step-dot {
  background: var(--green);
  border-color: transparent;
}
.step span {
  font-size: .7rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
}
.step.active span { color: var(--text); }
.step-line {
  flex: 1;
  height: 2px;
  background: var(--border);
  margin: 0 .5rem;
  border-radius: 1px;
}

/* ── Card ────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
  transition: box-shadow .3s;
}
.card:hover { box-shadow: var(--shadow), var(--glow); }

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: .4rem;
}
.card-desc {
  font-size: .875rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 1.25rem;
}

/* ── Preview Area ────────────────────────────────────────────────── */
.preview-area {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  border: 2px dashed var(--border-2);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: border-color .3s, background .3s;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.02);
  margin-bottom: 1rem;
}
.preview-area:hover, .preview-area:active {
  border-color: var(--purple);
  background: rgba(167,139,250,.06);
}
.preview-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .6rem;
  padding: 1.5rem;
  text-align: center;
}
.upload-icon-wrap { animation: pulse 2s ease-in-out infinite; }
@keyframes pulse {
  0%,100% { transform: scale(1); opacity: .8; }
  50%      { transform: scale(1.08); opacity: 1; }
}
.upload-hint  { font-size: .95rem; font-weight: 600; color: var(--text); }
.upload-sub   { font-size: .78rem; color: var(--text-muted); }

.preview-img {
  display: block;
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: calc(var(--radius) - 2px);
}
.preview-img.hidden { display: none !important; }

/* ── Button Group ────────────────────────────────────────────────── */
.btn-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
  margin-bottom: 1rem;
}

/* ── Buttons ─────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .85rem 1.25rem;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: .9rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all .2s;
  -webkit-tap-highlight-color: transparent;
  white-space: nowrap;
  user-select: none;
}
.btn:active { transform: scale(.96); }

.btn-primary {
  background: linear-gradient(135deg, var(--purple), var(--blue));
  color: #fff;
  box-shadow: 0 4px 20px rgba(167,139,250,.35);
}
.btn-primary:hover { box-shadow: 0 6px 28px rgba(167,139,250,.5); }
.btn-primary:disabled {
  opacity: .45;
  cursor: not-allowed;
  box-shadow: none;
  transform: none !important;
}

.btn-secondary {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border-2);
}
.btn-secondary:hover { background: rgba(255,255,255,.12); }

.btn-outline {
  background: transparent;
  color: var(--purple);
  border: 1px solid var(--purple);
}
.btn-outline:hover { background: rgba(167,139,250,.1); }

.btn-danger {
  background: rgba(248,113,113,.15);
  color: var(--red);
  border: 1px solid rgba(248,113,113,.3);
}
.btn-danger:hover { background: rgba(248,113,113,.25); }

.btn-primary { width: 100%; }

/* ── Progress ────────────────────────────────────────────────────── */
.progress-wrap { margin-top: 1rem; }
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--surface-2);
  border-radius: 3px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--purple), var(--blue));
  border-radius: 3px;
  transition: width .3s ease;
  animation: shimmer 1.5s infinite;
  background-size: 200% 100%;
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.progress-text {
  font-size: .8rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: .5rem;
}
.hidden { display: none !important; }

/* ── Frame Preview Card ──────────────────────────────────────────── */
.frame-preview-card {
  padding: 1.25rem;
}
.frame-preview-title {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: .875rem;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.frame-thumb-wrap {
  position: relative;
  display: inline-block;
  width: 100%;
}
.frame-thumb {
  width: 100%;
  max-height: 180px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: repeating-conic-gradient(rgba(255,255,255,.04) 0% 25%, transparent 0% 50%) 0 0 / 16px 16px;
}
.frame-badge {
  position: absolute;
  top: .5rem; right: .5rem;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  color: #fff;
  font-size: .7rem;
  font-weight: 700;
  padding: .25rem .6rem;
  border-radius: 20px;
}

/* ── Adjust Card ─────────────────────────────────────────────────── */
.adjust-card {}

.adjust-wrap {
  width: 100%;
  margin-bottom: 1rem;
}

.adjust-container {
  position: relative;
  width: 100%;
  /* height set dynamically by JS based on frame ratio */
  overflow: hidden;
  border-radius: var(--radius);
  background: #111;
  cursor: grab;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  border: 2px solid var(--border-2);
}
.adjust-container:active { cursor: grabbing; }

.adjust-photo {
  position: absolute;
  top: 50%;
  left: 50%;
  /* transform applied by JS: translate(-50%+offsetX, -50%+offsetY) */
  transform: translate(-50%, -50%);
  transform-origin: center center;
  pointer-events: none;
  display: block;
  max-width: none; /* allow photo to exceed container */
}

.adjust-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: fill;
  pointer-events: none;
  z-index: 2;
  display: block;
}

.drag-hint {
  position: absolute;
  bottom: .75rem;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,.65);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: .78rem;
  font-weight: 600;
  padding: .4rem .9rem;
  border-radius: 2rem;
  display: flex;
  align-items: center;
  gap: .4rem;
  z-index: 3;
  pointer-events: none;
  transition: opacity .4s ease;
  white-space: nowrap;
  border: 1px solid rgba(255,255,255,.15);
}

/* ── Zoom Row ─────────────────────────────────────────────────────── */
.zoom-row {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1rem;
  padding: .75rem 1rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.zoom-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--border-2);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
.zoom-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(167,139,250,.5);
}
.zoom-slider::-moz-range-thumb {
  width: 20px; height: 20px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--purple), var(--blue));
  cursor: pointer;
}

.zoom-val {
  font-size: .82rem;
  font-weight: 700;
  color: var(--purple);
  min-width: 36px;
  text-align: right;
}

/* ── 2-button row ────────────────────────────────────────────────── */
.btn-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
  margin-bottom: .875rem;
}
.btn-row-2 .btn { font-size: .83rem; }

/* ── 3-button row ────────────────────────────────────────────────── */
.btn-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: .5rem;
  margin-bottom: .875rem;
}
.btn-row-3 .btn {
  font-size: .8rem;
  padding: .7rem .3rem;
}


/* ── Success Banner ──────────────────────────────────────────────── */
.success-banner {
  display: flex;
  align-items: center;
  gap: .875rem;
  padding: 1rem 1.25rem;
  background: rgba(52,211,153,.12);
  border: 1px solid rgba(52,211,153,.3);
  border-radius: var(--radius);
}
.success-icon { font-size: 1.5rem; }
.success-banner strong { display: block; font-weight: 700; font-size: .95rem; }
.success-banner span   { font-size: .8rem; color: var(--text-muted); }

/* ── Result ──────────────────────────────────────────────────────── */
.result-img-wrap {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 1.25rem;
}
.result-img {
  width: 100%;
  display: block;
  border-radius: var(--radius);
  animation: fadeIn .6s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: scale(.97); }
  to   { opacity: 1; transform: scale(1); }
}
.result-size-badge {
  position: absolute;
  bottom: .75rem; right: .75rem;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: .72rem;
  font-weight: 600;
  padding: .25rem .6rem;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,.15);
}
.result-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .75rem;
  margin-bottom: 1rem;
}
.result-actions .btn-primary { width: auto; }
.result-actions .btn-secondary { min-width: 80px; }

/* ── Back Link ───────────────────────────────────────────────────── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  color: var(--text-muted);
  font-size: .85rem;
  text-decoration: none;
  transition: color .2s;
}
.back-link:hover { color: var(--purple); }

/* ── Warn Card ───────────────────────────────────────────────────── */
.warn-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
}
.warn-icon { font-size: 2.5rem; margin-bottom: .75rem; }
.warn-card h2 { font-size: 1.2rem; font-weight: 700; margin-bottom: .5rem; }
.warn-card p  { color: var(--text-muted); font-size: .9rem; }

/* ── Admin ────────────────────────────────────────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .875rem;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
  backdrop-filter: blur(16px);
}
.stat-icon { font-size: 1.5rem; margin-bottom: .3rem; }
.stat-val   { font-size: 2rem; font-weight: 800; background: linear-gradient(135deg, var(--purple), var(--blue)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { font-size: .75rem; color: var(--text-muted); font-weight: 500; margin-top: .15rem; }

.tip-box {
  background: rgba(167,139,250,.1);
  border: 1px solid rgba(167,139,250,.25);
  border-radius: var(--radius-sm);
  padding: .875rem 1rem;
  font-size: .83rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-top: 1rem;
}

/* ── Drop Zone ───────────────────────────────────────────────────── */
.drop-zone {
  border: 2px dashed var(--border-2);
  border-radius: var(--radius);
  padding: 2.5rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: all .25s;
  background: rgba(255,255,255,.02);
}
.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--purple);
  background: rgba(167,139,250,.07);
}
.drop-icon  { font-size: 2.5rem; margin-bottom: .5rem; }
.drop-text  { font-size: 1rem; font-weight: 600; margin-bottom: .3rem; }
.drop-sub   { font-size: .8rem; color: var(--text-muted); }

/* ── Form ────────────────────────────────────────────────────────── */
.form-group  { display: flex; flex-direction: column; gap: .5rem; }
.form-label  { font-size: .85rem; font-weight: 600; color: var(--text-muted); }
.form-input  {
  padding: .85rem 1rem;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: .9rem;
  outline: none;
  transition: border-color .2s;
}
.form-input:focus { border-color: var(--purple); }

/* ── Alert ───────────────────────────────────────────────────────── */
.alert {
  padding: .875rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 500;
}
.alert-success { background: rgba(52,211,153,.15); border: 1px solid rgba(52,211,153,.35); color: var(--green); }
.alert-error   { background: rgba(248,113,113,.15); border: 1px solid rgba(248,113,113,.35); color: var(--red); }

/* ── Empty State ─────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
}
.empty-icon { font-size: 2rem; margin-bottom: .5rem; }

/* ── Footer ──────────────────────────────────────────────────────── */
.app-footer {
  text-align: center;
  font-size: .78rem;
  color: var(--text-muted);
  padding-top: .5rem;
}
.app-footer a { color: var(--purple); text-decoration: none; }
.app-footer a:hover { text-decoration: underline; }

/* ── Scrollbar ───────────────────────────────────────────────────── */
::-webkit-scrollbar       { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 3px; }

/* ── Responsive adjustments ──────────────────────────────────────── */
@media (max-width: 360px) {
  .app-wrapper { padding: 1rem .875rem 2.5rem; }
  .btn-group   { grid-template-columns: 1fr; }
}