/* ============================================================
   HUMANIZE — TikTok Design System v2
   Layout fiel ao modelo original
   ============================================================ */

/* --- TOKENS --- */
:root {
  --bg:            #0f0f13;
  --surface:       #1a1a24;
  --card:          #1e1e2a;
  --card-hover:    #252534;
  --border:        rgba(255,255,255,0.07);
  --border-md:     rgba(255,255,255,0.12);
  --border-hi:     rgba(255,255,255,0.18);

  --red:           #FE2C55;
  --red-soft:      rgba(254,44,85,0.12);
  --red-glow:      rgba(254,44,85,0.28);
  --cyan:          #25F4EE;
  --cyan-soft:     rgba(37,244,238,0.1);
  --cyan-glow:     rgba(37,244,238,0.22);
  --amber:         #F59E0B;

  --text:          #FFFFFF;
  --text-2:        rgba(255,255,255,0.6);
  --text-3:        rgba(255,255,255,0.3);
  --text-4:        rgba(255,255,255,0.18);

  --radius-sm:     6px;
  --radius:        10px;
  --radius-lg:     14px;
  --radius-xl:     18px;

  --header-h:      60px;
  --t:             0.18s ease;
}

/* --- RESET --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 13px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

img { user-select: none; -webkit-user-drag: none; display: block; }
button { cursor: pointer; font-family: inherit; border: none; }
textarea { font-family: inherit; }

/* Scrollbar */
::-webkit-scrollbar { width: 3px; height: 3px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 99px; }

/* ============================================================
   HEADER
   ============================================================ */
.header {
  height: auto;
  min-height: 72px;
  background: rgba(15,15,19,0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 28px;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  gap: 24px;
  flex-wrap: nowrap;
}

/* Logo group */
.header-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 1;
  min-width: 0;
}

.logo-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
  border: 1px solid var(--border-md);
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 13px;
  display: block;
}

.logo-fallback {
  display: none;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #2a0a12, #0a1a2a);
}

.logo-text-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

/* Big headline */
.logo-headline {
  font-size: 26px;
  font-weight: 900;
  letter-spacing: -0.8px;
  line-height: 1.1;
  color: var(--text);
  white-space: nowrap;
}

.headline-humanize {
  background: linear-gradient(90deg,
    #FE2C55 0%,
    #ff7c9c 35%,
    #25F4EE 65%,
    #FE2C55 100%
  );
  background-size: 250% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: headline-shift 4s linear infinite;
}

@keyframes headline-shift {
  0%   { background-position: 0% center; }
  100% { background-position: 250% center; }
}

.logo-sub {
  font-size: 11px;
  color: var(--text-3);
  font-weight: 400;
  white-space: nowrap;
}

/* Tabs */
.header-tabs {
  display: flex;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 4px;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-2);
  font-size: 13px;
  font-weight: 600;
  transition: all var(--t);
  border: none;
}

.tab-btn:hover { color: var(--text); background: rgba(255,255,255,0.05); }

.tab-btn.active {
  background: var(--red);
  color: #fff;
  box-shadow: 0 0 18px var(--red-glow);
}

/* ============================================================
   MAIN GRID — fixed columns, stable on tab switch
   ============================================================ */
.main-grid {
  flex: 1;
  display: grid;
  /* Fixed left column width prevents layout shift between tabs */
  grid-template-columns: 480px 1fr;
  gap: 16px;
  padding: 16px 24px;
  max-width: 1300px;
  width: 100%;
  margin: 0 auto;
  align-items: start;
}

@media (max-width: 1060px) {
  .main-grid { grid-template-columns: 1fr; padding: 12px; }
}

.col-left,
.col-right {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ============================================================
   PANELS (cards)
   ============================================================ */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 18px;
  transition: border-color var(--t);
}

.panel:hover { border-color: var(--border-md); }

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.panel-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.2px;
}

.arrow-icon { color: var(--red); margin-left: 4px; }

/* ============================================================
   COMPARATOR
   ============================================================ */
.comparator-panel {
  padding: 14px;
  /* Fixed height - never changes between tabs */
  height: 460px;
}

.comparator {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: col-resize;
  user-select: none;
  background: #0a0a0f;
}

.comp-after,
.comp-before {
  position: absolute;
  inset: 0;
}

.comp-after img,
.comp-before img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.comp-after { z-index: 0; }

.comp-before {
  z-index: 1;
  clip-path: inset(0 50% 0 0);
  will-change: clip-path;
}

.comp-track {
  position: absolute;
  inset: 0;
  z-index: 10;
  pointer-events: none;
}

.comp-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: var(--red);
  box-shadow: 0 0 12px var(--red-glow);
  transform: translateX(-50%);
}

.comp-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 36px;
  height: 36px;
  background: var(--red);
  border: 2.5px solid rgba(255,255,255,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 18px var(--red-glow), 0 4px 12px rgba(0,0,0,0.6);
  color: #fff;
}

/* Corner labels */
.comp-label {
  position: absolute;
  top: 10px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.4px;
  padding: 3px 9px;
  border-radius: 999px;
  z-index: 5;
  text-transform: uppercase;
}

.comp-label-left {
  left: 10px;
  background: rgba(0,0,0,0.65);
  color: rgba(255,255,255,0.7);
  backdrop-filter: blur(4px);
}

.comp-label-right {
  right: 10px;
  background: var(--red);
  color: #fff;
  box-shadow: 0 0 12px var(--red-glow);
}

/* ============================================================
   PROMPT BOX
   ============================================================ */
.prompt-panel { padding: 18px; }

.prompt-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  letter-spacing: -0.2px;
}

.prompt-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.prompt-textarea {
  width: 100%;
  min-height: 130px;
  max-height: 220px;
  background: var(--card);
  border: 1px solid var(--border-md);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 12.5px;
  line-height: 1.7;
  padding: 12px 14px;
  resize: vertical;
  transition: border-color var(--t), box-shadow var(--t);
  outline: none;
}

.prompt-textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px var(--cyan-soft);
}

.prompt-textarea::placeholder { color: var(--text-3); }

/* Action buttons row */
.prompt-actions {
  display: flex;
  gap: 7px;
}

.act-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  transition: all var(--t);
  border: 1px solid var(--border-md);
  background: var(--card);
  color: var(--text-2);
}

.act-btn:hover {
  background: var(--card-hover);
  color: var(--text);
  border-color: var(--border-hi);
}

.act-copy {
  background: var(--red);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 3px 14px var(--red-glow);
  flex: 1;
  justify-content: center;
}

.act-copy:hover {
  background: #ff3d6a;
  box-shadow: 0 5px 20px var(--red-glow);
  transform: translateY(-1px);
  color: #fff;
  border-color: transparent;
}

.act-copy.copied {
  background: #16a34a !important;
  box-shadow: 0 3px 14px rgba(22,163,74,0.4) !important;
}

/* Prompt footer note */
.prompt-footer {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  font-size: 11px;
  color: var(--text-3);
  line-height: 1.5;
  padding-top: 4px;
}

.prompt-footer svg { flex-shrink: 0; margin-top: 1px; }
.prompt-footer strong { color: var(--text-2); font-weight: 600; }

/* ============================================================
   PRESETS PANEL
   ============================================================ */
.presets-panel { padding: 18px 18px 14px; }

/* Nav arrows */
.presets-nav { display: flex; gap: 6px; }

.nav-arrow {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--card);
  border: 1px solid var(--border-md);
  color: var(--text-2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--t);
}

.nav-arrow:hover {
  background: var(--card-hover);
  color: var(--text);
  border-color: var(--border-hi);
}

/* Preset cards track */
.presets-track {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scroll-behavior: smooth;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

/* Visible thin scrollbar for presets */
.presets-track::-webkit-scrollbar {
  display: block;
  height: 5px;
}
.presets-track::-webkit-scrollbar-track {
  background: var(--border);
  border-radius: 999px;
}
.presets-track::-webkit-scrollbar-thumb {
  background: var(--red);
  border-radius: 999px;
  box-shadow: 0 0 8px var(--red-glow);
}
.presets-track {
  scrollbar-width: thin;
  scrollbar-color: var(--red) rgba(255,255,255,0.07);
}

/* Individual preset card */
.preset-card {
  flex-shrink: 0;
  width: 148px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid var(--border);
  background: var(--card);
  cursor: pointer;
  transition: all var(--t);
  position: relative;
}

.preset-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.4);
}

.preset-card.active {
  border-color: var(--red);
  box-shadow: 0 0 0 1px var(--red), 0 8px 24px var(--red-glow);
}

.preset-card.active .preset-check { opacity: 1; transform: scale(1); }

.preset-thumb-wrap {
  width: 100%;
  aspect-ratio: 1 / 1;
  position: relative;
  overflow: hidden;
  background: var(--card-hover);
}

.preset-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.preset-card:hover .preset-thumb { transform: scale(1.04); }

.preset-thumb-empty {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  background: linear-gradient(135deg, #1a1226, #0d1a2a);
  color: var(--text-3);
}

.preset-type-tag {
  position: absolute;
  top: 6px;
  left: 6px;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 999px;
  z-index: 3;
}

.preset-type-tag.tag-foto { background: rgba(254,44,85,0.85); color: #fff; }
.preset-type-tag.tag-video { background: rgba(37,244,238,0.85); color: #000; }

.preset-check {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  background: var(--red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 4;
  opacity: 0;
  transform: scale(0.4);
  transition: all var(--t) cubic-bezier(0.34,1.56,0.64,1);
  box-shadow: 0 0 10px var(--red-glow);
}

.preset-info {
  padding: 8px 10px 10px;
}

.preset-name {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.preset-desc {
  font-size: 10px;
  color: var(--text-3);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Scrollbar indicator - HIDDEN, using native scrollbar instead */
.presets-scrollbar { display: none; }
.presets-scrollbar-thumb { display: none; }

/* ============================================================
   OPTIONS PANEL
   ============================================================ */
/* Options panel — fixed min height to prevent layout shift */
.options-panel { display: flex; flex-direction: column; gap: 12px; min-height: 320px; }


/* Subcategory pills */
.subcategory-pills {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.pill {
  padding: 5px 13px;
  border-radius: 999px;
  border: 1px solid var(--border-md);
  background: transparent;
  color: var(--text-2);
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--t);
  white-space: nowrap;
}

.pill:hover {
  border-color: var(--border-hi);
  color: var(--text);
  background: rgba(255,255,255,0.04);
}

.pill.active {
  background: var(--red-soft);
  border-color: var(--red);
  color: var(--red);
}

/* Options list */
.options-list {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-height: 160px;
}

.option-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--t);
  background: transparent;
  text-align: left;
  width: 100%;
}

.option-row:hover {
  background: rgba(255,255,255,0.03);
  border-color: var(--border-md);
}

.option-row.selected {
  background: var(--red-soft);
  border-color: var(--red);
}

.option-row.selected .opt-check {
  background: var(--red);
  border-color: var(--red);
  box-shadow: 0 0 8px var(--red-glow);
}

.option-row.selected .opt-check svg { display: block; }
.option-row.selected .opt-label { color: var(--text); }

.opt-check {
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--border-md);
  border-radius: 5px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--t);
  margin-top: 1px;
}

.opt-check svg { display: none; color: #fff; }

.opt-content { flex: 1; min-width: 0; }

.opt-label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-2);
  line-height: 1.3;
  font-style: italic;
}

.opt-desc {
  font-size: 10.5px;
  color: var(--text-3);
  margin-top: 2px;
  line-height: 1.4;
}

/* Show more button */
.show-more-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 100%;
  padding: 8px;
  border: 1px dashed var(--border-md);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-3);
  font-size: 11.5px;
  font-weight: 600;
  transition: all var(--t);
  cursor: pointer;
}

.show-more-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-soft);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  text-align: center;
  padding: 14px 24px;
  font-size: 11px;
  color: var(--text-3);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.footer-link { color: var(--red); text-decoration: none; font-weight: 600; }
.footer-link:hover { text-decoration: underline; }

/* ============================================================
   TOAST
   ============================================================ */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: var(--surface);
  border: 1px solid var(--border-hi);
  border-radius: 999px;
  padding: 10px 18px;
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  font-weight: 600;
  color: var(--cyan);
  box-shadow: 0 8px 28px rgba(0,0,0,0.5);
  opacity: 0;
  pointer-events: none;
  transition: all 0.28s cubic-bezier(0.34,1.56,0.64,1);
  z-index: 9999;
  white-space: nowrap;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ============================================================
   EMPTY / LOADING
   ============================================================ */
.empty-msg {
  padding: 24px 12px;
  text-align: center;
  color: var(--text-3);
  font-size: 12px;
}

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

.panel { animation: fadeUp 0.35s ease both; }
.col-left .panel:nth-child(1) { animation-delay: 0.04s; }
.col-left .panel:nth-child(2) { animation-delay: 0.1s; }
.col-right .panel:nth-child(1) { animation-delay: 0.14s; }
.col-right .panel:nth-child(2) { animation-delay: 0.2s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 600px) {
  .header { padding: 8px 14px; }
  .logo-sub { display: none; }
  .logo-headline { font-size: 18px; }
  .tab-btn { padding: 6px 10px; font-size: 12px; }
  .main-grid { gap: 12px; padding: 10px; }
}