/* ══════════════════════════════════════════
   Chat Widget Generator — Premium Dark UI
   ══════════════════════════════════════════ */

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

:root {
  --bg:        #F5F7FA;
  --bg-card:   #FFFFFF;
  --bg-input:  #F8F9FB;
  --border:    #E2E8F0;
  --border-focus: #21A5DE;
  --text:      #1E293B;
  --text-muted:#64748B;
  --accent:    #F25C3B;
  --accent-2:  #21A5DE;
  --danger:    #FF5C7A;
  --radius:    16px;
  --shadow:    0 10px 40px rgba(0,0,0,0.06);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

/* ── HEADER ── */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 780px; margin: 0 auto;
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon { font-size: 22px; }
.logo-text { font-size: 18px; font-weight: 400; color: var(--text-muted); }
.logo-text strong { color: var(--text); font-weight: 700; }
.header-badge {
  font-size: 11px; font-weight: 600; letter-spacing: 0.05em;
  background: rgba(33, 165, 222, 0.1);
  border: 1px solid rgba(33, 165, 222, 0.3);
  color: var(--accent);
  padding: 4px 12px; border-radius: 50px;
}

/* ── HERO ── */
.hero {
  padding: 64px 24px 32px;
  text-align: center;
  background: radial-gradient(ellipse 60% 40% at 50% 0%, rgba(242, 92, 59, 0.08) 0%, transparent 70%);
}
.hero-inner { max-width: 600px; margin: 0 auto; }
.hero-pill {
  display: inline-block;
  font-size: 12px; font-weight: 600; letter-spacing: 0.06em;
  background: rgba(242, 92, 59, 0.1); border: 1px solid rgba(242, 92, 59, 0.2);
  color: var(--accent); padding: 6px 16px; border-radius: 50px;
  margin-bottom: 24px;
}
.hero-title {
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 800; line-height: 1.2;
  color: var(--text); margin-bottom: 16px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 15px; color: var(--text-muted); max-width: 480px; margin: 0 auto;
}

/* ── APP CONTAINER ── */
.app-container {
  max-width: 780px; margin: 0 auto;
  padding: 16px 24px 80px;
  display: flex; flex-direction: column; gap: 20px;
}

/* ── CARDS ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  position: relative;
  box-shadow: var(--shadow);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.card:hover { border-color: var(--accent-2); box-shadow: 0 12px 48px rgba(0,0,0,0.08); }

.card-step {
  position: absolute; top: -14px; left: 28px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; font-size: 11px; font-weight: 800; letter-spacing: 0.08em;
  padding: 4px 14px; border-radius: 50px;
}
.card-title {
  font-size: 20px; font-weight: 700; margin-bottom: 6px;
  color: var(--text);
}
.card-desc { font-size: 14px; color: var(--text-muted); margin-bottom: 24px; }

/* ── DROP ZONE ── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--accent);
  background: rgba(242, 92, 59, 0.04);
}
.drop-icon { font-size: 40px; margin-bottom: 12px; }
.drop-text { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.drop-sub { font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
.btn-upload {
  display: inline-block; cursor: pointer;
  background: var(--accent); color: #fff;
  font-size: 14px; font-weight: 600;
  padding: 10px 24px; border-radius: 8px;
  transition: opacity 0.2s;
}
.btn-upload:hover { opacity: 0.85; }

/* ── PREVIEW ── */
.preview-box {
  position: relative; border-radius: 12px; overflow: hidden;
  border: 2px solid var(--accent);
}
.preview-box img {
  width: 100%; display: block; max-height: 320px; object-fit: cover;
}
.btn-clear {
  position: absolute; top: 10px; right: 10px;
  background: rgba(0,0,0,0.7); color: #fff;
  border: none; border-radius: 8px; padding: 6px 12px;
  font-size: 12px; cursor: pointer;
  transition: background 0.2s;
}
.btn-clear:hover { background: var(--danger); }

/* ── INPUTS ── */
.input-group { margin-bottom: 18px; }
.input-label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--text-muted); margin-bottom: 6px; letter-spacing: 0.02em;
}
.input-field {
  width: 100%;
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 14px; font-family: 'Inter', sans-serif;
  padding: 11px 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
  resize: none;
}
.input-field:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(33, 165, 222, 0.15);
}
.textarea { resize: vertical; min-height: 60px; }
.input-hint { font-size: 11px; color: var(--text-muted); margin-top: 4px; display: block; }

/* ── GENERATE BUTTON ── */
.card-generate { text-align: center; }
.btn-generate {
  display: inline-flex; align-items: center; gap: 10px;
  background: linear-gradient(135deg, var(--accent), #FF7B5E);
  color: #fff; border: none; cursor: pointer;
  font-size: 17px; font-weight: 700; font-family: 'Inter', sans-serif;
  padding: 16px 48px; border-radius: 50px;
  box-shadow: 0 8px 24px rgba(242, 92, 59, 0.3);
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-generate:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(242, 92, 59, 0.4);
}
.btn-generate:active { transform: translateY(0); }
.btn-generate-icon { font-size: 20px; }

/* ── LOADER ── */
.loader { margin-top: 28px; text-align: center; }
.loader-spinner {
  width: 48px; height: 48px; margin: 0 auto 16px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loader-text { font-size: 15px; font-weight: 600; color: var(--text); }
.loader-sub { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ── PALETTE PREVIEW ── */
.palette-preview {
  display: flex; gap: 10px; flex-wrap: wrap;
  margin-bottom: 24px;
}
.palette-swatch {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
}
.swatch-color {
  width: 48px; height: 48px; border-radius: 10px;
  border: 1px solid var(--border);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.swatch-label { font-size: 10px; color: var(--text-muted); font-weight: 600; }

/* ── CODE TABS ── */
.code-tabs {
  display: flex; gap: 8px; margin-bottom: 16px;
}
.tab-btn {
  flex: 1; padding: 10px;
  background: var(--bg-input); border: 1.5px solid var(--border);
  border-radius: 10px; color: var(--text-muted);
  font-size: 13px; font-weight: 600; font-family: 'Inter', sans-serif;
  cursor: pointer; transition: all 0.2s;
}
.tab-btn.active {
  background: rgba(33, 165, 222, 0.1); border-color: var(--accent-2);
  color: var(--accent-2);
}
.tab-btn:hover:not(.active) { border-color: var(--border-focus); color: var(--text); }

/* ── CODE OUTPUT ── */
.code-panel { margin-bottom: 16px; }
.code-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px;
}
.code-label { font-size: 12px; color: var(--text-muted); font-weight: 500; }
.btn-copy {
  background: var(--bg-input); border: 1.5px solid var(--border);
  color: var(--text); font-size: 12px; font-weight: 600;
  font-family: 'Inter', sans-serif;
  padding: 6px 14px; border-radius: 8px; cursor: pointer;
  transition: all 0.2s;
}
.btn-copy:hover { border-color: var(--accent-2); color: var(--accent-2); }
.code-output {
  width: 100%; min-height: 240px;
  background: #F8F9FB; border: 1.5px solid var(--border);
  border-radius: 10px; color: #1E293B;
  font-family: 'Fira Code', 'Courier New', monospace;
  font-size: 12px; line-height: 1.7;
  padding: 16px; resize: vertical;
}

/* ── BTN NEW ── */
.btn-new {
  display: block; width: 100%;
  margin-top: 8px; padding: 12px;
  background: transparent; border: 1.5px solid var(--border);
  border-radius: 10px; color: var(--text-muted);
  font-size: 14px; font-weight: 600; font-family: 'Inter', sans-serif;
  cursor: pointer; transition: all 0.2s;
}
.btn-new:hover { border-color: var(--accent); color: var(--text); }

/* ── FOOTER ── */
.footer {
  text-align: center; padding: 24px;
  font-size: 12px; color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* ── TOAST ── */
.toast {
  position: fixed; bottom: 32px; left: 50%; transform: translateX(-50%);
  background: var(--accent-2); color: #000;
  font-size: 14px; font-weight: 700;
  padding: 12px 28px; border-radius: 50px;
  box-shadow: 0 8px 32px rgba(0,212,170,0.4);
  z-index: 999;
  animation: fadeInUp 0.3s ease;
}
@keyframes fadeInUp {
  from { opacity:0; transform: translateX(-50%) translateY(12px); }
  to   { opacity:1; transform: translateX(-50%) translateY(0); }
}

/* ── UTILITIES ── */
.hidden { display: none !important; }