/* ============================================================
   NATURIZE — styles.css
   1. Variables  2. Reset  3. Typography  4. Layout
   + Light Theme  + Theme Toggle  + Humanity Score Meter
   5. Components 6. Animations 7. Responsive
   ============================================================ */

/* 1. VARIABLES */
:root {
  --bg: #0e0e10;
  --surface: #1a1a1e;
  --surface2: #222228;
  --accent: #00e5c0;
  --accent-dim: rgba(0,229,192,0.12);
  --accent-glow: rgba(0,229,192,0.35);
  --text: #f0f0f0;
  --muted: #9ca3af;
  --border: rgba(255,255,255,0.08);
  --danger: #ff5c7a;
  --danger-dim: rgba(255,92,122,0.15);
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 8px 40px rgba(0,0,0,0.5);
  --transition: 0.22s cubic-bezier(0.4,0,0.2,1);
  --font-head: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
}

/* 2. RESET */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:16px;line-height:1.65;overflow-x:hidden;min-height:100vh}
img{display:block;max-width:100%}
button{cursor:pointer;border:none;background:none;font-family:inherit}
a{color:inherit;text-decoration:none}
textarea{font-family:inherit;resize:vertical}
ul{list-style:none}

/* 3. TYPOGRAPHY */
h1,h2,h3,h4{font-family:var(--font-head);font-weight:700;line-height:1.2;letter-spacing:-0.02em}
h1{font-size:clamp(2.4rem,5.5vw,4.2rem)}
h2{font-size:clamp(1.8rem,3.5vw,2.8rem)}
h3{font-size:1.3rem}
p{color:var(--muted);line-height:1.7}

/* NOISE OVERLAY */
body::before{content:'';position:fixed;inset:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");pointer-events:none;z-index:0;opacity:0.35}

/* RADIAL GLOW */
.glow-orb{position:absolute;border-radius:50%;filter:blur(120px);pointer-events:none;z-index:0}
.glow-orb--teal{width:600px;height:600px;background:radial-gradient(circle,rgba(0,229,192,0.08) 0%,transparent 70%);top:-100px;left:50%;transform:translateX(-50%)}

/* 4. LAYOUT */
.container{max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
section{position:relative}

/* 5. COMPONENTS */

/* ── NAVBAR ── */
.navbar{position:sticky;top:0;z-index:100;padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between;background:rgba(14,14,16,0.7);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--border)}
.nav-logo{display:flex;align-items:center;gap:8px;font-family:var(--font-head);font-weight:700;font-size:1.2rem;letter-spacing:-0.02em}
.nav-logo span{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{font-size:.9rem;font-weight:500;color:var(--muted);transition:color var(--transition);position:relative;padding-bottom:4px}
.nav-links a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:1.5px;background:var(--accent);transition:width var(--transition)}
.nav-links a:hover{color:var(--text)}
.nav-links a:hover::after{width:100%}
.hamburger{display:none;flex-direction:column;gap:5px;padding:4px;cursor:pointer}
.hamburger span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:var(--transition)}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{display:none;flex-direction:column;gap:0;background:var(--surface);border-bottom:1px solid var(--border)}
.mobile-menu a{padding:14px 24px;font-size:1rem;font-weight:500;color:var(--muted);border-bottom:1px solid var(--border);transition:color var(--transition)}
.mobile-menu a:hover{color:var(--text)}
.mobile-menu.open{display:flex}

/* ── HERO ── */
.hero{padding:120px 24px 80px;text-align:center;overflow:hidden}
.hero__badge{display:inline-flex;align-items:center;gap:8px;background:var(--accent-dim);border:1px solid rgba(0,229,192,0.25);border-radius:100px;padding:6px 16px;font-size:.8rem;font-weight:600;color:var(--accent);letter-spacing:.05em;text-transform:uppercase;margin-bottom:28px}
.hero__headline{margin-bottom:20px}
.hero__typewriter{display:inline-block;color:var(--accent);min-width:200px}
.hero__sub{max-width:560px;margin:0 auto 40px;font-size:1.1rem;color:var(--muted)}
.hero__ctas{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ── BUTTONS ── */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:var(--radius-sm);font-size:.95rem;font-weight:600;transition:var(--transition);cursor:pointer;border:none;font-family:inherit}
.btn--primary{background:var(--accent);color:#0e0e10}
.btn--primary:hover{background:#00ffd4;transform:translateY(-2px);box-shadow:0 0 30px var(--accent-glow)}
.btn--ghost{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn--ghost:hover{border-color:rgba(255,255,255,0.2);background:var(--surface);transform:translateY(-2px)}
.btn--danger{background:var(--danger);color:#fff}
.btn--danger:hover{opacity:.9;transform:translateY(-1px)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none !important;box-shadow:none !important}
.btn--sm{padding:9px 18px;font-size:.85rem}

/* ── AD PLACEHOLDERS ── */
.ad-banner{margin:0 auto;display:flex;align-items:center;justify-content:center;border:1px dashed rgba(255,255,255,0.1);border-radius:var(--radius-sm);color:var(--muted);font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;background:rgba(255,255,255,0.02)}
.ad-banner--728{width:100%;max-width:728px;height:90px;margin:32px auto}
.ad-banner--300{width:300px;height:250px;flex-shrink:0}

/* ── TOOL SECTION ── */
.tool-section{padding:60px 24px 80px}
.tool-section .container{display:flex;gap:24px;align-items:flex-start}
.tool-main{flex:1;min-width:0}
.tool-sidebar{display:flex;flex-direction:column;gap:16px}

/* ── TABS ── */
.tabs{display:flex;gap:4px;background:var(--surface);border-radius:var(--radius);padding:5px;margin-bottom:24px;border:1px solid var(--border);position:relative}
.tab-btn{flex:1;padding:12px;border-radius:10px;font-size:.9rem;font-weight:600;color:var(--muted);transition:var(--transition);position:relative;z-index:1;border:none;background:none;cursor:pointer;font-family:inherit;display:inline-flex;align-items:center;justify-content:center;gap:7px}
.tab-btn.active{color:var(--text);background:var(--surface2);box-shadow:0 0 0 1px var(--border);color:var(--accent)}
.tab-indicator{position:absolute;bottom:0;left:0;height:2px;background:var(--accent);border-radius:2px;transition:var(--transition)}

/* ── CARD ── */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:var(--transition)}
.card:hover{border-color:rgba(255,255,255,0.13)}
.card--glow:focus-within{border-color:rgba(0,229,192,0.3);box-shadow:0 0 30px rgba(0,229,192,0.06)}

/* ── PANELS ── */
.panels{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.panel-label{font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-bottom:10px;display:flex;align-items:center;justify-content:space-between}
.panel-counter{font-size:.75rem;color:var(--muted)}

/* TEXTAREA */
.tool-textarea{width:100%;background:transparent;color:var(--text);border:none;outline:none;font-size:.95rem;line-height:1.7;min-height:240px;resize:none;font-family:var(--font-body)}
.tool-textarea::placeholder{color:rgba(156,163,175,0.5)}
.tool-textarea:focus{outline:none}

.panel-actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}

/* OUTPUT CARD */
.output-card{min-height:240px;display:flex;flex-direction:column}
.output-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:var(--muted);opacity:.5}
.output-empty svg{opacity:.4}
.output-text{flex:1;font-size:.95rem;line-height:1.8;color:var(--text);white-space:pre-wrap;word-break:break-word}
.output-actions{display:flex;gap:8px;margin-top:16px;padding-top:14px;border-top:1px solid var(--border)}

/* ── SKELETON ── */
.skeleton{background:linear-gradient(90deg,var(--surface) 25%,var(--surface2) 50%,var(--surface) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:6px}
.skel-line{height:14px;margin-bottom:10px;border-radius:6px}
.skel-line:last-child{width:65%}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* ── DETECTOR UI ── */
.detector-result{display:flex;flex-direction:column;align-items:center;gap:24px;padding:16px}
.meter-wrap{position:relative;width:160px;height:160px}
.meter-wrap svg{transform:rotate(-90deg)}
.meter-track{fill:none;stroke:var(--surface2);stroke-width:12}
.meter-fill{fill:none;stroke-width:12;stroke-linecap:round;stroke-dasharray:408;stroke-dashoffset:408;transition:stroke-dashoffset 1.2s cubic-bezier(.4,0,.2,1),stroke .5s}
.meter-label{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.meter-score{font-family:var(--font-head);font-size:2.2rem;font-weight:700;line-height:1}
.meter-unit{font-size:.75rem;color:var(--muted);margin-top:2px}
.verdict-badge{padding:8px 22px;border-radius:100px;font-size:.85rem;font-weight:700;letter-spacing:.05em}
.verdict-badge--human{background:rgba(0,229,100,0.15);color:#00e564;border:1px solid rgba(0,229,100,0.25)}
.verdict-badge--likely-human{background:rgba(100,229,0,0.12);color:#88e500;border:1px solid rgba(100,229,0,0.2)}
.verdict-badge--mixed{background:rgba(255,200,0,0.12);color:#ffc800;border:1px solid rgba(255,200,0,0.2)}
.verdict-badge--likely-ai{background:rgba(255,120,0,0.12);color:#ff7800;border:1px solid rgba(255,120,0,0.2)}
.verdict-badge--ai{background:var(--danger-dim);color:var(--danger);border:1px solid rgba(255,92,122,0.2)}
.reasons-list{width:100%;display:flex;flex-direction:column;gap:8px}
.reason-item{display:flex;align-items:flex-start;gap:10px;font-size:.88rem;color:var(--muted);line-height:1.5;opacity:0;transform:translateY(8px);transition:opacity .4s,transform .4s}
.reason-item.revealed{opacity:1;transform:none}
.reason-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:7px;flex-shrink:0}

/* ── FEATURES ── */
.features-section{padding:80px 24px}
.section-label{font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:var(--accent);margin-bottom:12px}
.section-title{margin-bottom:48px}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;transition:var(--transition);cursor:default}
.feature-card:hover{transform:translateY(-5px);border-color:rgba(0,229,192,0.2);box-shadow:0 20px 60px rgba(0,0,0,0.4),0 0 0 1px rgba(0,229,192,0.1)}
.feature-icon{width:52px;height:52px;border-radius:14px;background:var(--accent-dim);border:1px solid rgba(0,229,192,0.2);display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--accent)}
.feature-card h3{font-size:1.05rem;margin-bottom:8px}
.feature-card p{font-size:.9rem;color:var(--muted)}

/* ── PRICING ── */
.pricing-section{padding:80px 24px}
.pricing-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:740px;margin:0 auto}
.pricing-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:32px;transition:var(--transition)}
.pricing-card--premium{border-color:rgba(0,229,192,0.35);box-shadow:0 0 40px rgba(0,229,192,0.07)}
.pricing-badge{display:inline-block;background:var(--accent);color:#0e0e10;font-size:.72rem;font-weight:700;padding:3px 10px;border-radius:100px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:12px}
.pricing-name{font-family:var(--font-head);font-size:1.3rem;font-weight:700;margin-bottom:6px}
.pricing-price{font-family:var(--font-head);font-size:2.4rem;font-weight:700;color:var(--text);margin-bottom:6px}
.pricing-price span{font-size:1rem;color:var(--muted);font-weight:400}
.pricing-desc{font-size:.88rem;color:var(--muted);margin-bottom:24px}
.pricing-features{display:flex;flex-direction:column;gap:12px;margin-bottom:28px}
.pricing-feature{display:flex;align-items:center;gap:10px;font-size:.9rem}
.pricing-feature .check{color:var(--accent);font-size:1rem}
.pricing-feature .cross{color:var(--muted);opacity:.4}

/* ── MODAL ── */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.75);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);z-index:200;display:flex;align-items:center;justify-content:center;padding:24px;opacity:0;pointer-events:none;transition:opacity var(--transition)}
.modal-overlay.open{opacity:1;pointer-events:all}
.modal{background:var(--surface);border:1px solid rgba(0,229,192,0.25);border-radius:20px;padding:40px;max-width:440px;width:100%;text-align:center;transform:scale(.9);transition:transform var(--transition);box-shadow:0 0 80px rgba(0,229,192,0.1),var(--shadow)}
.modal-overlay.open .modal{transform:scale(1)}
.modal-icon{width:64px;height:64px;border-radius:18px;background:var(--accent-dim);border:1px solid rgba(0,229,192,0.25);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;color:var(--accent)}
.modal h2{margin-bottom:12px;font-size:1.6rem}
.modal p{color:var(--muted);margin-bottom:28px;font-size:.95rem}
.modal-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--muted);transition:var(--transition);background:none;cursor:pointer}
.modal-close:hover{color:var(--text);border-color:rgba(255,255,255,0.2)}
.modal{position:relative}
.btn--upgrade{background:var(--accent);color:#0e0e10;font-size:1rem;padding:15px 32px;width:100%;justify-content:center;animation:upgradePulse 2.5s ease-in-out infinite}
@keyframes upgradePulse{0%,100%{box-shadow:0 0 0 0 var(--accent-glow)}50%{box-shadow:0 0 30px 6px var(--accent-glow)}}

/* ── TOAST ── */
.toast-container{position:fixed;bottom:28px;right:28px;z-index:300;display:flex;flex-direction:column;gap:10px;pointer-events:none}
.toast{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:13px 18px;font-size:.88rem;color:var(--text);box-shadow:var(--shadow);opacity:0;transform:translateY(14px);transition:opacity .3s,transform .3s;pointer-events:none;max-width:320px;display:flex;align-items:center;gap:10px}
.toast.show{opacity:1;transform:none;pointer-events:all}
.toast--success{border-color:rgba(0,229,192,0.25)}
.toast--error{border-color:rgba(255,92,122,0.25)}
.toast-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.toast--success .toast-dot{background:var(--accent)}
.toast--error .toast-dot{background:var(--danger)}

/* ── FOOTER ── */
.footer{padding:40px 24px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.footer-links{display:flex;gap:24px}
.footer-links a{font-size:.85rem;color:var(--muted);transition:color var(--transition)}
.footer-links a:hover{color:var(--text)}
.footer-powered{font-size:.82rem;color:var(--muted)}
.footer-powered span{color:var(--accent)}

/* ── SCROLL REVEAL ── */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}

/* 6. KEYFRAMES */
@keyframes fadeIn{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}
.cursor{display:inline-block;width:2px;height:1em;background:var(--accent);margin-left:3px;vertical-align:text-bottom;animation:blink 1s step-end infinite}

/* 7. RESPONSIVE */
@media(max-width:1024px){
  .panels{grid-template-columns:1fr}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .tool-sidebar{display:none}
}
@media(max-width:768px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .hero{padding:80px 24px 60px}
  .panels{grid-template-columns:1fr}
  .pricing-grid{grid-template-columns:1fr}
  .features-grid{grid-template-columns:1fr}
  .tool-section .container{flex-direction:column}
  .footer{flex-direction:column;text-align:center}
  .footer-links{justify-content:center}
}
@media(max-width:480px){
  .hero__ctas{flex-direction:column;align-items:stretch}
  .btn{justify-content:center}
  .panel-actions{flex-direction:column}
  .panel-actions .btn{width:100%;justify-content:center}
}

/* ── LIGHT THEME ── */
html.light {
  --bg: #f5f5f7;
  --surface: #ffffff;
  --surface2: #ebebef;
  --text: #111114;
  --muted: #6b7280;
  --border: rgba(0,0,0,0.09);
  --shadow: 0 8px 40px rgba(0,0,0,0.1);
}
html.light body::before { opacity: 0.1; }
html.light .navbar { background: rgba(245,245,247,0.75); }
html.light .mobile-menu { background: #fff; }
html.light .glow-orb--teal { background: radial-gradient(circle, rgba(0,229,192,0.12) 0%, transparent 70%); }
html.light .tool-textarea { color: var(--text); }
html.light .ad-banner { border-color: rgba(0,0,0,0.1); background: rgba(0,0,0,0.02); }
html.light .pricing-card--premium { box-shadow: 0 0 40px rgba(0,229,192,0.1); }
html.light .toast { background: #fff; }
html.light .skeleton { background: linear-gradient(90deg,#e5e5ea 25%,#f0f0f5 50%,#e5e5ea 75%); background-size:200% 100%; }
html.light .meter-track { stroke: #e5e5ea; }

/* ── NAV RIGHT (theme toggle + hamburger wrapper) ── */
.nav-right { display: flex; align-items: center; gap: 8px; }

/* ── THEME TOGGLE BUTTON ── */
.theme-toggle {
  width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--muted); transition: var(--transition);
  background: transparent; cursor: pointer;
  flex-shrink: 0;
}
.theme-toggle:hover { color: var(--text); border-color: var(--accent); background: var(--accent-dim); }
/* Show moon in dark mode, sun in light mode */
.icon-sun { display: none; }
.icon-moon { display: block; }
html.light .icon-sun { display: block; }
html.light .icon-moon { display: none; }

/* ── HUMANITY SCORE SECTION ── */
.humanity-section {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  margin-top: 4px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.humanity-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.humanity-label {
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.humanity-label::before {
  content: '';
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
}
.humanity-score-num {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 700;
}
/* Circular mini meter for humanity */
.humanity-meter-wrap {
  display: flex;
  align-items: center;
  gap: 20px;
}
.humanity-circle {
  position: relative;
  width: 100px;
  height: 100px;
  flex-shrink: 0;
}
.humanity-circle svg { transform: rotate(-90deg); }
.humanity-circle-track { fill: none; stroke: var(--surface2); stroke-width: 10; }
.humanity-circle-fill {
  fill: none;
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 251;
  stroke-dashoffset: 251;
  transition: stroke-dashoffset 1.4s cubic-bezier(.4,0,.2,1), stroke .5s;
}
.humanity-circle-label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.humanity-circle-pct {
  font-family: var(--font-head);
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1;
}
.humanity-circle-sub {
  font-size: .6rem;
  color: var(--muted);
  margin-top: 2px;
}
/* Progress bar below circle */
.humanity-bar-wrap {
  flex: 1;
}
.humanity-bar-labels {
  display: flex;
  justify-content: space-between;
  font-size: .72rem;
  color: var(--muted);
  margin-bottom: 6px;
}
.humanity-bar-track {
  height: 8px;
  background: var(--surface2);
  border-radius: 100px;
  overflow: hidden;
}
.humanity-bar-fill {
  height: 100%;
  border-radius: 100px;
  width: 0%;
  transition: width 1.4s cubic-bezier(.4,0,.2,1), background .5s;
}
.humanity-verdict {
  font-size: .82rem;
  font-weight: 600;
  margin-top: 4px;
}

/* ── TONE SELECTOR ── */
.tone-selector-wrap {
  margin-top: 14px;
  margin-bottom: 4px;
}
.tone-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--muted);
  margin-bottom: 8px;
}
.tone-premium-badge {
  background: linear-gradient(135deg, #00e5c0, #0099ff);
  color: #0e0e10;
  font-size: .6rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: .06em;
  margin-left: 2px;
}
.tone-select {
  width: 100%;
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: .9rem;
  font-family: var(--font-body);
  font-weight: 500;
  cursor: pointer;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239ca3af' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.tone-select:focus {
  border-color: rgba(0,229,192,0.4);
  box-shadow: 0 0 0 3px rgba(0,229,192,0.08);
}
.tone-select:hover { border-color: rgba(255,255,255,0.2); }
.tone-select option { background: var(--surface2); color: var(--text); }
html.light .tone-select { background-color: #f0f0f5; }
html.light .tone-select option { background: #fff; }

/* ── DOCX EXPORT BUTTON ── */
.btn--docx {
  background: rgba(0,229,192,0.12);
  color: var(--accent);
  border: 1px solid rgba(0,229,192,0.25);
  font-size: .85rem;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  font-family: var(--font-body);
}
.btn--docx:hover {
  background: rgba(0,229,192,0.2);
  border-color: rgba(0,229,192,0.5);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0,229,192,0.15);
}
.btn--docx:disabled { opacity: .45; cursor: not-allowed; transform: none; }

/* ── BUY ME A COFFEE BUTTON ── */
.btn--bmc {
  background: linear-gradient(135deg, #00e5c0, #0099ff);
  color: #0e0e10;
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  border-radius: 50px;
  border: none;
  padding: 12px 28px;
  font-size: 1.05rem;
  box-shadow: 0 4px 15px rgba(0, 229, 192, 0.25);
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-decoration: none;
  cursor: pointer;
}
.btn--bmc:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 229, 192, 0.4);
  filter: brightness(1.1);
}
.btn--bmc svg {
  width: 22px;
  height: 22px;
}