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

:root {
  --bg:        #07080f;
  --surface:   #0e1120;
  --surface2:  #141828;
  --border:    rgba(255,255,255,0.07);
  --border2:   rgba(255,255,255,0.12);
  --accent1:   #7c6ef2;   /* purple */
  --accent2:   #4fc8eb;   /* cyan   */
  --accent3:   #f06faa;   /* pink   */
  --text:      #e8eaf6;
  --muted:     #6b7194;
  --radius:    16px;
  --radius-sm: 10px;
  --shadow:    0 24px 60px rgba(0,0,0,0.5);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Background Blobs ─────────────────────────────────────── */
.bg-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.18;
  pointer-events: none;
  z-index: 0;
  animation: drift 18s ease-in-out infinite alternate;
}
.blob-1 { width: 600px; height: 600px; background: var(--accent1); top: -200px; left: -200px; }
.blob-2 { width: 500px; height: 500px; background: var(--accent2); bottom: -150px; right: -150px; animation-delay: -6s; }
.blob-3 { width: 350px; height: 350px; background: var(--accent3); top: 40%; left: 50%; animation-delay: -12s; }

@keyframes drift {
  from { transform: translate(0,0) scale(1); }
  to   { transform: translate(40px, 30px) scale(1.08); }
}

/* ── Layout Wrapper ───────────────────────────────────────── */
.wrapper {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* ── Header ───────────────────────────────────────────────── */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0 20px;
  flex-wrap: wrap;
  gap: 14px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}
.logo-icon { font-size: 20px; color: var(--accent1); filter: drop-shadow(0 0 8px var(--accent1)); }
.logo-text  { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; }
.logo-badge {
  font-size: 10px; font-weight: 700; letter-spacing: 0.08em;
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  padding: 2px 7px; border-radius: 20px; color: #fff;
}

.nav-pills { display: flex; gap: 4px; }
.nav-pill {
  padding: 7px 16px; border-radius: 20px;
  font-size: 0.82rem; font-weight: 500;
  color: var(--muted); text-decoration: none;
  border: 1px solid transparent;
  transition: all 0.2s;
}
.nav-pill:hover, .nav-pill.active {
  color: var(--text);
  background: var(--surface2);
  border-color: var(--border2);
}

/* ── Hero ─────────────────────────────────────────────────── */
.hero { text-align: center; padding: 48px 0 44px; }

.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.8rem; font-weight: 500; color: var(--accent2);
  background: rgba(79,200,235,0.08);
  border: 1px solid rgba(79,200,235,0.2);
  padding: 6px 16px; border-radius: 20px;
  margin-bottom: 24px;
  letter-spacing: 0.04em;
}

.pulse-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent2);
  animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(79,200,235,0.5); }
  50%      { box-shadow: 0 0 0 6px rgba(79,200,235,0); }
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent1) 0%, var(--accent2) 50%, var(--accent3) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub { font-size: 1.05rem; color: var(--muted); max-width: 440px; margin: 0 auto; line-height: 1.6; }

/* ── Main Card ────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 24px;
  padding: 32px;
  box-shadow: var(--shadow);
}

/* ── Type Tabs ────────────────────────────────────────────── */
.type-tabs {
  display: flex; gap: 6px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 5px;
  margin-bottom: 24px;
  border: 1px solid var(--border);
}
.type-tab {
  flex: 1; padding: 9px 12px;
  font-size: 0.83rem; font-weight: 500;
  border: none; border-radius: 7px;
  background: transparent; color: var(--muted);
  cursor: pointer; transition: all 0.2s;
}
.type-tab:hover { color: var(--text); }
.type-tab.active {
  background: var(--surface2);
  color: var(--text);
  box-shadow: 0 1px 6px rgba(0,0,0,0.4);
}

/* ── Input Row ────────────────────────────────────────────── */
.input-row {
  display: flex; gap: 12px;
  margin-bottom: 16px;
}
.input-wrap {
  flex: 1; position: relative;
  display: flex; align-items: center;
}
.input-icon {
  position: absolute; left: 16px;
  color: var(--accent1); font-size: 14px;
  pointer-events: none;
  filter: drop-shadow(0 0 6px var(--accent1));
}
.topic-input {
  width: 100%;
  padding: 15px 44px 15px 42px;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.topic-input::placeholder { color: var(--muted); }
.topic-input:focus {
  border-color: var(--accent1);
  box-shadow: 0 0 0 3px rgba(124,110,242,0.15);
}
.clear-btn {
  position: absolute; right: 14px;
  background: none; border: none;
  color: var(--muted); font-size: 13px;
  cursor: pointer; padding: 4px; border-radius: 4px;
  opacity: 0; pointer-events: none;
  transition: opacity 0.2s, color 0.2s;
}
.clear-btn.visible { opacity: 1; pointer-events: auto; }
.clear-btn:hover { color: var(--text); }

.generate-btn {
  display: flex; align-items: center; gap: 8px;
  padding: 15px 28px;
  background: linear-gradient(135deg, var(--accent1), #5e4fd6);
  border: none; border-radius: var(--radius-sm);
  color: #fff; font-size: 0.95rem; font-weight: 600;
  cursor: pointer; white-space: nowrap;
  transition: transform 0.15s, box-shadow 0.2s, opacity 0.2s;
  box-shadow: 0 4px 20px rgba(124,110,242,0.4);
}
.generate-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(124,110,242,0.55); }
.generate-btn:active { transform: translateY(0); }
.generate-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.btn-icon { font-size: 1.1rem; transition: transform 0.2s; }
.generate-btn:hover .btn-icon { transform: translateX(3px); }

/* ── Options Row ──────────────────────────────────────────── */
.options-row {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.options-label { font-size: 0.82rem; color: var(--muted); font-weight: 500; }
.tone-group { display: flex; gap: 6px; flex-wrap: wrap; }
.tone-btn {
  padding: 6px 14px;
  font-size: 0.8rem; font-weight: 500;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--muted);
  cursor: pointer; transition: all 0.2s;
}
.tone-btn:hover { border-color: var(--border2); color: var(--text); }
.tone-btn.active {
  background: rgba(124,110,242,0.12);
  border-color: rgba(124,110,242,0.4);
  color: var(--accent1);
}

/* ── Output Area ──────────────────────────────────────────── */
.output-area {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-height: 220px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  position: relative;
}

/* Empty State */
.empty-state {
  text-align: center; padding: 40px 20px;
  animation: fadeIn 0.4s ease;
}
.empty-icon {
  font-size: 2.5rem; color: var(--accent1);
  margin-bottom: 16px;
  filter: drop-shadow(0 0 16px var(--accent1));
  animation: float 3s ease-in-out infinite;
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}
.empty-state p { font-size: 0.95rem; color: var(--text); margin-bottom: 6px; }
.empty-state span { font-size: 0.82rem; color: var(--muted); }

/* Loader */
.loader {
  display: flex; flex-direction: column;
  align-items: center; gap: 16px;
  padding: 40px;
  animation: fadeIn 0.3s ease;
}
.loader-ring {
  width: 52px; height: 52px;
  position: relative;
}
.ring-segment {
  position: absolute; inset: 0;
  border-radius: 50%;
  border: 3px solid transparent;
}
.ring-segment:nth-child(1) {
  border-top-color: var(--accent1);
  animation: spin 1.2s linear infinite;
}
.ring-segment:nth-child(2) {
  border-right-color: var(--accent2);
  animation: spin 1.2s linear infinite 0.15s;
  inset: 6px;
}
.ring-segment:nth-child(3) {
  border-bottom-color: var(--accent3);
  animation: spin 1.2s linear infinite 0.3s;
  inset: 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loader-dots { display: flex; gap: 6px; }
.typing-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent1);
  animation: bounce 1.2s ease-in-out infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; background: var(--accent2); }
.typing-dot:nth-child(3) { animation-delay: 0.4s; background: var(--accent3); }
@keyframes bounce {
  0%,60%,100% { transform: translateY(0); opacity: 0.5; }
  30%          { transform: translateY(-8px); opacity: 1; }
}
.loader-text { font-size: 0.85rem; color: var(--muted); animation: fadeText 2s ease infinite; }
@keyframes fadeText { 0%,100% { opacity: 0.5; } 50% { opacity: 1; } }

/* Result */
.result-block {
  width: 100%; align-self: stretch;
  display: flex; flex-direction: column;
  animation: fadeIn 0.5s ease;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.result-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px 14px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap; gap: 10px;
}
.result-meta { display: flex; align-items: center; gap: 10px; }
.result-type-badge {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.04em;
  background: linear-gradient(135deg, rgba(124,110,242,0.2), rgba(79,200,235,0.2));
  border: 1px solid rgba(124,110,242,0.3);
  color: var(--accent2); padding: 4px 12px; border-radius: 20px;
}
.result-word-count { font-size: 0.78rem; color: var(--muted); }

.result-actions { display: flex; gap: 8px; }
.action-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px;
  font-size: 0.8rem; font-weight: 500;
  background: var(--bg); border: 1px solid var(--border2);
  border-radius: var(--radius-sm); color: var(--muted);
  cursor: pointer; transition: all 0.2s;
}
.action-btn:hover { color: var(--text); border-color: var(--border2); background: var(--surface); }
.copy-btn.copied {
  color: #4ade80;
  border-color: rgba(74,222,128,0.3);
  background: rgba(74,222,128,0.05);
}

.result-text {
  padding: 24px;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text);
  white-space: pre-wrap;
  overflow-y: auto;
  max-height: 420px;
}
.result-text h2 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.result-text strong { color: #c4b5fd; }

/* Typing cursor effect */
.typing-cursor::after {
  content: '|';
  color: var(--accent1);
  animation: blink 0.8s step-end infinite;
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

/* ── Stats Bar ────────────────────────────────────────────── */
.stats-bar {
  display: flex; align-items: center; justify-content: center;
  gap: 32px; margin: 36px 0 8px;
  padding: 22px 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num { display: block; font-size: 1.35rem; font-weight: 800; background: linear-gradient(135deg, var(--accent1), var(--accent2)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { font-size: 0.75rem; color: var(--muted); margin-top: 2px; }
.stat-divider { width: 1px; height: 36px; background: var(--border); }

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
  text-align: center; padding: 20px 0 0;
  font-size: 0.8rem; color: var(--muted);
  display: flex; align-items: center; justify-content: center; gap: 12px;
}
.footer-dots { display: flex; gap: 5px; }
.footer-dots span { width: 4px; height: 4px; border-radius: 50%; background: var(--muted); opacity: 0.4; }

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 600px) {
  .card { padding: 20px 16px; }
  .input-row { flex-direction: column; }
  .generate-btn { width: 100%; justify-content: center; }
  .type-tabs { flex-wrap: wrap; }
  .stats-bar { gap: 20px; }
  .stat-divider { display: none; }
  .result-header { flex-direction: column; align-items: flex-start; }
}