/* ═══════════════════════════════════════════════════════════════
   QRCraft — Premium QR Code Generator
   Style System: CSS Variables + Glassmorphism + 6 Themes
   ═══════════════════════════════════════════════════════════════ */

/* ── RESET ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; line-height: 1.6; min-height: 100vh; overflow-x: hidden; transition: background 0.4s ease, color 0.4s ease; }
img, canvas, svg { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea, select { font-family: inherit; }
a { text-decoration: none; color: inherit; }
[hidden] { display: none !important; }

/* ── THEME: MIDNIGHT BLACK (default) ───────────────────────────── */
[data-theme="midnight"] {
  --bg-base:        #08080f;
  --bg-elevated:    #0e0e1a;
  --bg-card:        rgba(255,255,255,0.04);
  --bg-card-hover:  rgba(255,255,255,0.07);
  --glass-bg:       rgba(14,14,26,0.7);
  --glass-border:   rgba(255,255,255,0.08);
  --glass-shine:    rgba(255,255,255,0.04);
  --accent:         #7c3aed;
  --accent-2:       #a855f7;
  --accent-glow:    rgba(124,58,237,0.35);
  --accent-soft:    rgba(124,58,237,0.12);
  --text-primary:   #f1f0ff;
  --text-secondary: #a09ec0;
  --text-muted:     #5c5a7a;
  --border:         rgba(255,255,255,0.08);
  --border-focus:   rgba(124,58,237,0.6);
  --shadow-sm:      0 2px 8px rgba(0,0,0,0.4);
  --shadow-md:      0 8px 32px rgba(0,0,0,0.5);
  --shadow-lg:      0 24px 64px rgba(0,0,0,0.6);
  --orb-1:          rgba(124,58,237,0.2);
  --orb-2:          rgba(168,85,247,0.12);
  --orb-3:          rgba(59,130,246,0.1);
  --gradient:       linear-gradient(135deg, #7c3aed, #a855f7);
  --gradient-hero:  radial-gradient(ellipse at 50% 0%, rgba(124,58,237,0.15) 0%, transparent 70%);
  --input-bg:       rgba(255,255,255,0.05);
  --input-border:   rgba(255,255,255,0.1);
  --range-track:    rgba(255,255,255,0.1);
  --scrollbar:      rgba(255,255,255,0.1);
  --skeleton-base:  rgba(255,255,255,0.05);
  --skeleton-shine: rgba(255,255,255,0.1);
}

/* ── THEME: OCEAN BLUE ─────────────────────────────────────────── */
[data-theme="ocean"] {
  --bg-base:        #040d1a;
  --bg-elevated:    #071628;
  --bg-card:        rgba(255,255,255,0.04);
  --bg-card-hover:  rgba(255,255,255,0.07);
  --glass-bg:       rgba(7,22,40,0.75);
  --glass-border:   rgba(14,165,233,0.15);
  --glass-shine:    rgba(255,255,255,0.04);
  --accent:         #0ea5e9;
  --accent-2:       #38bdf8;
  --accent-glow:    rgba(14,165,233,0.35);
  --accent-soft:    rgba(14,165,233,0.12);
  --text-primary:   #e0f2fe;
  --text-secondary: #7ecae4;
  --text-muted:     #3d6e85;
  --border:         rgba(14,165,233,0.12);
  --border-focus:   rgba(14,165,233,0.5);
  --shadow-sm:      0 2px 8px rgba(0,0,0,0.4);
  --shadow-md:      0 8px 32px rgba(0,0,0,0.5);
  --shadow-lg:      0 24px 64px rgba(0,0,0,0.6);
  --orb-1:          rgba(14,165,233,0.18);
  --orb-2:          rgba(56,189,248,0.1);
  --orb-3:          rgba(30,64,175,0.15);
  --gradient:       linear-gradient(135deg, #0ea5e9, #38bdf8);
  --gradient-hero:  radial-gradient(ellipse at 50% 0%, rgba(14,165,233,0.15) 0%, transparent 70%);
  --input-bg:       rgba(255,255,255,0.05);
  --input-border:   rgba(14,165,233,0.15);
  --range-track:    rgba(255,255,255,0.1);
  --scrollbar:      rgba(14,165,233,0.2);
  --skeleton-base:  rgba(255,255,255,0.05);
  --skeleton-shine: rgba(14,165,233,0.08);
}

/* ── THEME: EMERALD GREEN ──────────────────────────────────────── */
[data-theme="emerald"] {
  --bg-base:        #020f0a;
  --bg-elevated:    #041a10;
  --bg-card:        rgba(255,255,255,0.04);
  --bg-card-hover:  rgba(255,255,255,0.07);
  --glass-bg:       rgba(4,26,16,0.75);
  --glass-border:   rgba(16,185,129,0.15);
  --glass-shine:    rgba(255,255,255,0.04);
  --accent:         #10b981;
  --accent-2:       #34d399;
  --accent-glow:    rgba(16,185,129,0.35);
  --accent-soft:    rgba(16,185,129,0.12);
  --text-primary:   #d1fae5;
  --text-secondary: #6ee7b7;
  --text-muted:     #2d5c40;
  --border:         rgba(16,185,129,0.12);
  --border-focus:   rgba(16,185,129,0.5);
  --shadow-sm:      0 2px 8px rgba(0,0,0,0.4);
  --shadow-md:      0 8px 32px rgba(0,0,0,0.5);
  --shadow-lg:      0 24px 64px rgba(0,0,0,0.6);
  --orb-1:          rgba(16,185,129,0.18);
  --orb-2:          rgba(52,211,153,0.1);
  --orb-3:          rgba(6,95,70,0.2);
  --gradient:       linear-gradient(135deg, #10b981, #34d399);
  --gradient-hero:  radial-gradient(ellipse at 50% 0%, rgba(16,185,129,0.15) 0%, transparent 70%);
  --input-bg:       rgba(255,255,255,0.05);
  --input-border:   rgba(16,185,129,0.15);
  --range-track:    rgba(255,255,255,0.1);
  --scrollbar:      rgba(16,185,129,0.2);
  --skeleton-base:  rgba(255,255,255,0.05);
  --skeleton-shine: rgba(16,185,129,0.08);
}

/* ── THEME: SUNSET ORANGE ──────────────────────────────────────── */
[data-theme="sunset"] {
  --bg-base:        #0f0602;
  --bg-elevated:    #1a0c04;
  --bg-card:        rgba(255,255,255,0.04);
  --bg-card-hover:  rgba(255,255,255,0.07);
  --glass-bg:       rgba(26,12,4,0.75);
  --glass-border:   rgba(249,115,22,0.15);
  --glass-shine:    rgba(255,255,255,0.04);
  --accent:         #f97316;
  --accent-2:       #fb923c;
  --accent-glow:    rgba(249,115,22,0.35);
  --accent-soft:    rgba(249,115,22,0.12);
  --text-primary:   #fff7ed;
  --text-secondary: #fdba74;
  --text-muted:     #7c3d13;
  --border:         rgba(249,115,22,0.12);
  --border-focus:   rgba(249,115,22,0.5);
  --shadow-sm:      0 2px 8px rgba(0,0,0,0.4);
  --shadow-md:      0 8px 32px rgba(0,0,0,0.5);
  --shadow-lg:      0 24px 64px rgba(0,0,0,0.6);
  --orb-1:          rgba(249,115,22,0.18);
  --orb-2:          rgba(220,38,38,0.12);
  --orb-3:          rgba(251,146,60,0.1);
  --gradient:       linear-gradient(135deg, #f97316, #ef4444);
  --gradient-hero:  radial-gradient(ellipse at 50% 0%, rgba(249,115,22,0.15) 0%, transparent 70%);
  --input-bg:       rgba(255,255,255,0.05);
  --input-border:   rgba(249,115,22,0.15);
  --range-track:    rgba(255,255,255,0.1);
  --scrollbar:      rgba(249,115,22,0.2);
  --skeleton-base:  rgba(255,255,255,0.05);
  --skeleton-shine: rgba(249,115,22,0.08);
}

/* ── THEME: PURPLE NEON ────────────────────────────────────────── */
[data-theme="neon"] {
  --bg-base:        #06000f;
  --bg-elevated:    #0d0018;
  --bg-card:        rgba(255,255,255,0.04);
  --bg-card-hover:  rgba(255,255,255,0.07);
  --glass-bg:       rgba(13,0,24,0.8);
  --glass-border:   rgba(168,85,247,0.2);
  --glass-shine:    rgba(255,255,255,0.04);
  --accent:         #a855f7;
  --accent-2:       #ec4899;
  --accent-glow:    rgba(168,85,247,0.4);
  --accent-soft:    rgba(168,85,247,0.12);
  --text-primary:   #fdf4ff;
  --text-secondary: #d8b4fe;
  --text-muted:     #6b21a8;
  --border:         rgba(168,85,247,0.15);
  --border-focus:   rgba(168,85,247,0.6);
  --shadow-sm:      0 2px 8px rgba(0,0,0,0.5);
  --shadow-md:      0 8px 32px rgba(168,85,247,0.15);
  --shadow-lg:      0 24px 64px rgba(168,85,247,0.2);
  --orb-1:          rgba(168,85,247,0.25);
  --orb-2:          rgba(236,72,153,0.15);
  --orb-3:          rgba(99,102,241,0.15);
  --gradient:       linear-gradient(135deg, #a855f7, #ec4899);
  --gradient-hero:  radial-gradient(ellipse at 50% 0%, rgba(168,85,247,0.2) 0%, transparent 70%);
  --input-bg:       rgba(255,255,255,0.04);
  --input-border:   rgba(168,85,247,0.2);
  --range-track:    rgba(255,255,255,0.1);
  --scrollbar:      rgba(168,85,247,0.25);
  --skeleton-base:  rgba(168,85,247,0.05);
  --skeleton-shine: rgba(168,85,247,0.1);
}

/* ── THEME: PURE WHITE ─────────────────────────────────────────── */
[data-theme="white"] {
  --bg-base:        #f0f4ff;
  --bg-elevated:    #ffffff;
  --bg-card:        rgba(255,255,255,0.92);
  --bg-card-hover:  rgba(255,255,255,1);
  --glass-bg:       rgba(255,255,255,0.82);
  --glass-border:   rgba(99,102,241,0.12);
  --glass-shine:    rgba(255,255,255,0.9);
  --accent:         #6366f1;
  --accent-2:       #818cf8;
  --accent-glow:    rgba(99,102,241,0.25);
  --accent-soft:    rgba(99,102,241,0.08);
  --text-primary:   #0f172a;
  --text-secondary: #374151;
  --text-muted:     #9ca3af;
  --border:         rgba(99,102,241,0.1);
  --border-focus:   rgba(99,102,241,0.55);
  --shadow-sm:      0 2px 10px rgba(99,102,241,0.08);
  --shadow-md:      0 8px 32px rgba(99,102,241,0.12);
  --shadow-lg:      0 24px 64px rgba(99,102,241,0.15);
  --orb-1:          rgba(99,102,241,0.1);
  --orb-2:          rgba(139,92,246,0.08);
  --orb-3:          rgba(59,130,246,0.07);
  --gradient:       linear-gradient(135deg, #6366f1, #818cf8);
  --gradient-hero:  radial-gradient(ellipse at 50% 0%, rgba(99,102,241,0.12) 0%, transparent 70%);
  --input-bg:       rgba(255,255,255,1);
  --input-border:   rgba(99,102,241,0.15);
  --range-track:    rgba(99,102,241,0.12);
  --scrollbar:      rgba(99,102,241,0.15);
  --skeleton-base:  rgba(99,102,241,0.05);
  --skeleton-shine: rgba(99,102,241,0.1);
}

/* ── LIGHT MODE OVERRIDE ────────────────────────────────────────── */
body.light-mode:not([data-theme="white"]) {
  --bg-base:        #f1f5f9;
  --bg-elevated:    #ffffff;
  --bg-card:        rgba(255,255,255,0.9);
  --glass-bg:       rgba(255,255,255,0.8);
  --glass-border:   rgba(0,0,0,0.08);
  --text-primary:   #0f172a;
  --text-secondary: #475569;
  --text-muted:     #94a3b8;
  --border:         rgba(0,0,0,0.08);
  --input-bg:       #ffffff;
  --input-border:   rgba(0,0,0,0.12);
  --range-track:    rgba(0,0,0,0.1);
  --skeleton-base:  rgba(0,0,0,0.05);
  --skeleton-shine: rgba(0,0,0,0.08);
  --shadow-sm:      0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:      0 8px 32px rgba(0,0,0,0.1);
}

/* ── GLOBAL BODY ─────────────────────────────────────────────────── */
body {
  background: var(--bg-base);
  color: var(--text-primary);
}
[data-theme="white"] body {
  background: linear-gradient(160deg, #f0f4ff 0%, #fafbff 50%, #eef2ff 100%);
  min-height: 100vh;
}

/* ── SCROLLBAR ───────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ── PAGE ENTRANCE ───────────────────────────────────────────────── */
body.page-loading * { animation-play-state: paused !important; }
body.page-loaded .animate-in {
  animation: fadeInUp 0.6s ease forwards;
}
body.page-loaded .animate-in-delay-1 { animation-delay: 0.1s; }
body.page-loaded .animate-in-delay-2 { animation-delay: 0.2s; }
body.page-loaded .animate-in-delay-3 { animation-delay: 0.3s; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.92); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow); }
  50%       { box-shadow: 0 0 0 8px transparent; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes orb-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(30px, -20px) scale(1.05); }
  66%       { transform: translate(-20px, 15px) scale(0.97); }
}
@keyframes toast-in {
  from { opacity: 0; transform: translateX(100%) scale(0.95); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}
@keyframes toast-out {
  from { opacity: 1; transform: translateX(0) scale(1); }
  to   { opacity: 0; transform: translateX(100%) scale(0.95); }
}
@keyframes badge-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}
@keyframes history-card-in {
  from { opacity: 0; transform: scale(0.92) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* ── CONTAINER ───────────────────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ═══════════════════════════════════════════════════════════════════
   NAVBAR
   ═══════════════════════════════════════════════════════════════════ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
  transition: background 0.4s ease;
}
.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  border-radius: 10px;
  color: white;
  box-shadow: 0 4px 12px var(--accent-glow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.logo:hover .logo-icon {
  transform: scale(1.05) rotate(-3deg);
  box-shadow: 0 6px 20px var(--accent-glow);
}
.logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.logo-badge {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-glow);
  padding: 2px 6px;
  border-radius: 4px;
}

/* Nav Center */
.nav-center {
  flex: 1;
  text-align: center;
}
.nav-tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Nav Controls */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Theme Switcher */
.theme-switcher {
  display: flex;
  align-items: center;
  gap: 5px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4px 8px;
}
.theme-btn {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  padding: 0;
  position: relative;
  transition: transform 0.2s ease;
  outline: none;
  flex-shrink: 0;
}
.theme-btn:hover { transform: scale(1.18); }
.theme-btn.active { transform: scale(1.18); }
.theme-btn.active::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 2px solid var(--accent);
}
.theme-dot {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.12); /* makes white dot visible on light bg */
}
/* White dot gets a slightly darker border so it's visible */
[data-theme="white"] .theme-btn:first-child .theme-dot,
.theme-btn[data-theme="white"] .theme-dot {
  border-color: rgba(0,0,0,0.2);
}

/* Mode Toggle */
.mode-toggle {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
  position: relative;
}
.mode-toggle:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.icon-sun, .icon-moon { position: absolute; transition: opacity 0.3s, transform 0.3s; }
.icon-moon { opacity: 0; transform: rotate(30deg); }
body.light-mode .icon-sun { opacity: 0; transform: rotate(-30deg); }
body.light-mode .icon-moon { opacity: 1; transform: rotate(0); }

/* ═══════════════════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  padding: 100px 24px 80px;
  text-align: center;
  overflow: hidden;
  background: var(--gradient-hero);
}

/* Background Orbs */
.hero-bg-orbs { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  animation: orb-float 12s ease-in-out infinite;
}
.orb-1 {
  width: 500px; height: 500px;
  background: var(--orb-1);
  top: -200px; left: -100px;
  animation-delay: 0s;
}
.orb-2 {
  width: 400px; height: 400px;
  background: var(--orb-2);
  top: -100px; right: -100px;
  animation-delay: -4s;
}
.orb-3 {
  width: 300px; height: 300px;
  background: var(--orb-3);
  bottom: -100px; left: 50%;
  transform: translateX(-50%);
  animation-delay: -8s;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

/* Hero Badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-glow);
  border-radius: 100px;
  padding: 6px 16px;
  font-size: 0.8rem;
  color: var(--accent-2);
  font-weight: 500;
  margin-bottom: 28px;
  animation: fadeIn 0.8s ease forwards;
}
.badge-dot {
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: badge-pulse 2s ease infinite;
}

/* Hero Title */
.hero-title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 20px;
  animation: fadeInUp 0.6s ease 0.1s forwards;
  opacity: 0;
}
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.7;
  animation: fadeInUp 0.6s ease 0.2s forwards;
  opacity: 0;
}

/* Hero Actions */
.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
  animation: fadeInUp 0.6s ease 0.3s forwards;
  opacity: 0;
}

/* Hero Stats */
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  animation: fadeInUp 0.6s ease 0.4s forwards;
  opacity: 0;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.stat strong {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat span { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.stat-divider { width: 1px; height: 36px; background: var(--border); }

/* ═══════════════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.2s ease;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.1);
  opacity: 0;
  transition: opacity 0.2s;
}
.btn:hover::before { opacity: 1; }
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 28px var(--accent-glow);
}
.btn-primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.btn-ghost {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
  border-color: var(--accent);
}
.btn-ghost:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.btn-large { padding: 14px 28px; font-size: 1rem; border-radius: 12px; }
.btn-sm { padding: 7px 14px; font-size: 0.8rem; border-radius: 8px; }

.btn-link {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: opacity 0.2s;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}
.btn-link:hover { opacity: 0.7; }

.btn-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}
.btn-icon:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.btn-icon:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ═══════════════════════════════════════════════════════════════════
   GENERATOR
   ═══════════════════════════════════════════════════════════════════ */
.generator-section {
  padding: 60px 0;
}

.generator-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

/* ── PANEL ──────────────────────────────────────────────────────── */
.panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.panel-block {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow-md);
  transition: border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}
.panel-block::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--glass-shine);
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}
.panel-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.panel-title-row .panel-title { margin-bottom: 0; }

/* ── TYPE TABS ──────────────────────────────────────────────────── */
.type-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}
.type-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 10px 6px;
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--input-bg);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
  cursor: pointer;
}
.type-tab:hover {
  color: var(--text-secondary);
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}
.type-tab.active {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: var(--accent);
}
.type-tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── FORMS ──────────────────────────────────────────────────────── */
.form-group { margin-bottom: 14px; }
.form-group:last-child { margin-bottom: 0; }

.form-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}
.optional-label {
  font-weight: 400;
  color: var(--text-muted);
}
.form-label-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  margin-top: 24px;
  font-size: 0.85rem;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all 0.2s ease;
  outline: none;
  appearance: none;
}
.form-control::placeholder { color: var(--text-muted); }
.form-control:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-soft);
  background: var(--bg-card);
}
.form-textarea {
  resize: vertical;
  min-height: 90px;
  line-height: 1.6;
}
.form-select { background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e"); background-repeat: no-repeat; background-position: right 10px center; background-size: 16px; padding-right: 36px; cursor: pointer; }
.form-hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 5px; display: block; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.input-with-toggle { position: relative; }
.input-with-toggle .form-control { padding-right: 44px; }
.toggle-password {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  transition: color 0.2s;
  padding: 4px;
}
.toggle-password:hover { color: var(--text-primary); }

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ── CUSTOMIZATION ──────────────────────────────────────────────── */
.customize-grid { display: flex; flex-direction: column; gap: 18px; }
.custom-field { display: flex; flex-direction: column; gap: 8px; }

/* Range Slider */
.range-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--range-track);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
  position: relative;
}
.range-slider::-webkit-slider-runnable-track {
  background: linear-gradient(to right, var(--accent) 0%, var(--accent) var(--pct, 33%), var(--range-track) var(--pct, 33%));
  height: 4px;
  border-radius: 2px;
}
.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--accent), 0 2px 6px rgba(0,0,0,0.25);
  margin-top: -7px;
  cursor: grab;
  transition: transform 0.15s;
}
.range-slider::-webkit-slider-thumb:active { cursor: grabbing; transform: scale(1.2); }
/* Firefox */
.range-slider::-moz-range-track {
  height: 4px;
  border-radius: 2px;
  background: var(--range-track);
  border: none;
}
.range-slider::-moz-range-progress {
  height: 4px;
  border-radius: 2px 0 0 2px;
  background: var(--accent);
}
.range-slider::-moz-range-thumb {
  width: 18px; height: 18px;
  background: white;
  border-radius: 50%;
  border: 3px solid var(--accent);
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  cursor: grab;
}
.range-slider:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 3px var(--accent), 0 0 0 6px var(--accent-soft); }
.range-slider:focus-visible::-moz-range-thumb { border-color: var(--accent); outline: 3px solid var(--accent-soft); }

.value-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 1px 7px;
  border-radius: 4px;
}

/* Color */
.color-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.color-field { display: flex; flex-direction: column; gap: 6px; }
.color-input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 10px;
  padding: 8px 12px;
  transition: border-color 0.2s;
}
.color-input-wrap:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.color-picker {
  width: 28px; height: 28px;
  border-radius: 6px;
  border: none;
  padding: 0;
  cursor: pointer;
  background: none;
  flex-shrink: 0;
}
.color-picker::-webkit-color-swatch-wrapper { padding: 0; }
.color-picker::-webkit-color-swatch { border-radius: 5px; border: 1px solid var(--border); }
.color-hex {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Segmented Control */
.segmented-control {
  display: flex;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
}
.seg-btn {
  flex: 1;
  padding: 7px;
  border-radius: 7px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all 0.2s ease;
  cursor: pointer;
}
.seg-btn:hover { color: var(--text-secondary); }
.seg-btn.active {
  background: var(--accent);
  color: white;
  box-shadow: 0 2px 8px var(--accent-glow);
}
.seg-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Style Options */
.style-options { display: flex; gap: 8px; }
.style-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 10px 8px;
  border-radius: 10px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--input-bg);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
  cursor: pointer;
}
.style-btn:hover {
  color: var(--text-secondary);
  border-color: var(--border-focus);
}
.style-btn.active {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: var(--accent);
}
.style-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Logo Upload */
.logo-upload-area {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  background: var(--input-bg);
}
.logo-upload-area:hover, .logo-upload-area:focus-visible, .logo-upload-area.drag-over {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.logo-upload-area:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.logo-upload-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.8rem;
  pointer-events: none;
}
.upload-hint { font-size: 0.7rem; color: var(--text-muted); }
#logo-file-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}
.logo-upload-preview {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: 8px;
  margin: 0 auto;
}
.btn-remove-logo {
  color: #ef4444;
  margin-top: 6px;
}

/* ═══════════════════════════════════════════════════════════════════
   PREVIEW PANEL
   ═══════════════════════════════════════════════════════════════════ */
.preview-block { position: sticky; top: 80px; }

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.preview-header .panel-title { margin-bottom: 0; }
.preview-actions { display: flex; gap: 8px; }

/* Skeleton */
.qr-skeleton {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 260px;
  display: none;
}
.skeleton-inner {
  width: 220px;
  height: 220px;
  border-radius: 12px;
  overflow: hidden;
}
.skeleton-block {
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--skeleton-base) 25%, var(--skeleton-shine) 50%, var(--skeleton-base) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 12px;
}

/* Canvas Wrap */
.qr-canvas-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 260px;
  position: relative;
}
#qr-canvas {
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: none;
}
#qr-canvas.visible {
  display: block;
  animation: scaleIn 0.3s ease forwards;
}
#qr-canvas:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg), 0 0 0 1px var(--accent-glow);
}

.qr-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 40px;
}

/* Content Preview */
.content-preview {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 12px;
  padding: 10px 12px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.content-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  margin-top: 1px;
}
.content-text {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-secondary);
  word-break: break-all;
  line-height: 1.5;
}

/* ── DOWNLOAD BUTTONS ───────────────────────────────────────────── */
.download-buttons { display: flex; flex-direction: column; gap: 8px; }
.btn-download {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  transition: all 0.2s ease;
  cursor: pointer;
  text-align: left;
  width: 100%;
}
.btn-download:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  transform: translateX(3px);
  box-shadow: var(--shadow-sm);
}
.btn-download:active { transform: translateX(1px); }
.btn-download:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.dl-icon {
  width: 38px; height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  border-radius: 9px;
  color: white;
  flex-shrink: 0;
  box-shadow: 0 3px 10px var(--accent-glow);
}
.dl-info { flex: 1; }
.dl-info strong { display: block; font-size: 0.9rem; font-weight: 700; }
.dl-info span { font-size: 0.75rem; color: var(--text-muted); }
.dl-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-glow);
  padding: 2px 7px;
  border-radius: 4px;
}

/* ═══════════════════════════════════════════════════════════════════
   HISTORY
   ═══════════════════════════════════════════════════════════════════ */
.history-section {
  padding: 60px 0 80px;
  border-top: 1px solid var(--border);
}

.history-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.section-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 3px;
}

.history-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}

.history-empty {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 60px 20px;
  color: var(--text-muted);
  font-size: 0.875rem;
  text-align: center;
}

.history-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  animation: history-card-in 0.3s ease forwards;
  position: relative;
  overflow: hidden;
}
.history-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md), 0 0 0 1px var(--accent-glow);
}
.history-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.history-card-img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  border-radius: 8px;
  background: white;
  padding: 4px;
}
.history-card-info { flex: 1; }
.history-card-type {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 3px;
}
.history-card-content {
  font-size: 0.72rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.history-card-date {
  font-size: 0.68rem;
  color: var(--text-muted);
}
.history-card-actions {
  display: flex;
  gap: 6px;
  opacity: 0;
  transition: opacity 0.2s;
}
.history-card:hover .history-card-actions { opacity: 1; }
.history-action-btn {
  flex: 1;
  padding: 5px;
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all 0.15s;
  cursor: pointer;
  text-align: center;
}
.history-action-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}
.history-action-del {
  flex: 0 0 auto;
  padding: 5px 8px;
  color: var(--text-muted);
}
.history-action-del:hover {
  color: #ef4444;
  border-color: #ef4444;
  background: rgba(239,68,68,0.08);
}

/* ═══════════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════════ */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-brand { display: flex; align-items: center; gap: 8px; }
.footer-tagline { font-size: 0.75rem; color: var(--text-muted); }
.footer-copy { font-size: 0.78rem; color: var(--text-muted); }

/* ═══════════════════════════════════════════════════════════════════
   TOAST NOTIFICATIONS
   ═══════════════════════════════════════════════════════════════════ */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: 12px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-md);
  min-width: 280px;
  max-width: 360px;
  pointer-events: all;
  animation: toast-in 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}
.toast.out { animation: toast-out 0.3s ease forwards; }
.toast-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
}
.toast.success .toast-icon { background: rgba(16,185,129,0.15); color: #10b981; }
.toast.error .toast-icon   { background: rgba(239,68,68,0.15);  color: #ef4444; }
.toast.info .toast-icon    { background: var(--accent-soft); color: var(--accent); }
.toast.warning .toast-icon { background: rgba(234,179,8,0.15);  color: #eab308; }
.toast-text { flex: 1; }
.toast-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1px;
}
.toast-msg {
  font-size: 0.78rem;
  color: var(--text-secondary);
}
.toast-close {
  color: var(--text-muted);
  padding: 4px;
  border-radius: 4px;
  transition: color 0.2s;
  font-size: 1rem;
  line-height: 1;
}
.toast-close:hover { color: var(--text-primary); }

/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .generator-grid {
    grid-template-columns: 1fr;
  }
  .panel-right {
    order: -1;
  }
  .preview-block {
    position: static;
  }
  .nav-center { display: none; }
  .type-tabs { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 640px) {
  .navbar-inner { padding: 0 12px; gap: 8px; }
  .container { padding: 0 16px; }
  .hero { padding: 60px 16px 40px; }
  .hero-title { font-size: 2rem; }
  .type-tabs { grid-template-columns: repeat(4, 1fr); gap: 4px; }
  .type-tab { font-size: 0.65rem; padding: 8px 4px; }
  .theme-switcher { gap: 3px; padding: 3px 5px; }
  .theme-btn { width: 18px; height: 18px; }
  .logo-badge { display: none; } /* hide PRO/QR badge to save space */
  .mode-toggle { width: 34px; height: 34px; }
  .form-row { grid-template-columns: 1fr; }
  .color-row { grid-template-columns: 1fr 1fr; }
  .panel-block { padding: 16px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .generator-section { padding: 32px 0; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 6px; }
  .toast-container { left: 12px; right: 12px; bottom: 12px; }
  .toast { min-width: unset; max-width: 100%; }
  .history-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 400px) {
  .type-tabs { grid-template-columns: repeat(4, 1fr); }
  .style-options { flex-direction: column; }
  .logo-text { font-size: 1rem; }
}

/* Very narrow: collapse theme switcher to 4 dots (hide last 2) */
@media (max-width: 360px) {
  .theme-switcher .theme-btn:nth-child(n+5) { display: none; }
  .navbar-inner { gap: 6px; }
}

/* ═══════════════════════════════════════════════════════════════════
   MOBILE OPTIMIZATIONS — dedicated mobile-first pass
   ═══════════════════════════════════════════════════════════════════ */

/* ── 430px and below (large phones: iPhone 14/15, Pixel 6a, Galaxy A54) */
@media (max-width: 430px) {
  /* Hero: tighter vertical rhythm */
  .hero { padding: 48px 16px 32px; }
  .hero-subtitle { font-size: 0.95rem; margin-bottom: 24px; }
  .hero-stats { gap: 16px; }
  .stat strong { font-size: 1.35rem; }

  /* Touch targets: form actions stack vertically so each button is full-width */
  .form-actions { flex-direction: column; gap: 8px; }
  .form-actions .btn { width: 100%; justify-content: center; }

  /* Download buttons: tighter, still comfortable */
  .btn-download { padding: 12px 14px; gap: 10px; }
  .dl-icon { width: 34px; height: 34px; border-radius: 8px; }
  .dl-info strong { font-size: 0.85rem; }

  /* History: comfortable 2-column layout */
  .history-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .history-card { padding: 12px; gap: 8px; }
  .history-card-actions { opacity: 1; } /* always visible on touch */

  /* Preview canvas: cap at 90% width to avoid any overflow */
  #qr-canvas { max-width: 90%; }
  .qr-canvas-wrap { min-height: 220px; }
  .qr-skeleton { min-height: 220px; }

  /* Hero actions: ensure buttons don't overflow */
  .hero-actions .btn-large { padding: 12px 24px; font-size: 0.95rem; }
}

/* ── 390px and below (iPhone 12/13/14 base, common Android) */
@media (max-width: 390px) {
  .container { padding: 0 14px; }
  .panel-block { padding: 14px; }
  .customize-grid { gap: 14px; }

  /* Slightly reduce type tab text to keep 4-column grid clean */
  .type-tab { font-size: 0.62rem; padding: 8px 3px; gap: 4px; }

  /* Color pickers: reduce label size */
  .color-row { gap: 10px; }

  /* Section padding */
  .history-section { padding: 40px 0 60px; }
}

/* ── 360px and below (smaller Android, narrow phones) */
@media (max-width: 360px) {
  .container { padding: 0 12px; }
  .panel-block { padding: 12px; }
  .hero { padding: 40px 12px 28px; }
  .hero-title { font-size: 1.8rem; }
  .hero-stats { gap: 10px; }
  .stat strong { font-size: 1.2rem; }
  .stat span { font-size: 0.68rem; }
  .stat-divider { height: 28px; }

  /* Type tabs: keep 4-column grid, minimal padding */
  .type-tab { font-size: 0.6rem; padding: 7px 2px; }

  /* Segmented control (ECL): tighter */
  .seg-btn { padding: 6px 4px; font-size: 0.75rem; }

  /* Download buttons */
  .btn-download { padding: 10px 12px; gap: 8px; }
  .dl-icon { width: 30px; height: 30px; border-radius: 7px; }
  .dl-info strong { font-size: 0.8rem; }
  .dl-badge { font-size: 0.6rem; padding: 2px 5px; }

  /* Generator section */
  .generator-section { padding: 20px 0; }

  /* History */
  .history-grid { gap: 8px; }
  .history-card { padding: 10px; border-radius: 12px; }
  .history-card-img { border-radius: 6px; }
  .section-title { font-size: 1.25rem; }
}

/* ── 320px (minimum supported width) */
@media (max-width: 320px) {
  .container { padding: 0 10px; }
  .panel-block { padding: 10px; }
  .navbar-inner { padding: 0 10px; gap: 4px; }
  .logo-icon { width: 30px; height: 30px; border-radius: 8px; }
  .logo-text { font-size: 0.9rem; }
  .hero { padding: 36px 10px 24px; }
  .hero-title { font-size: 1.6rem; }
  .hero-subtitle { font-size: 0.88rem; }
  .hero-badge { font-size: 0.72rem; padding: 5px 12px; margin-bottom: 20px; }
  .hero-stats { gap: 8px; }
  .hero-actions .btn-large { padding: 10px 18px; font-size: 0.88rem; }

  /* Type tabs: icons only row with tiny labels */
  .type-tab { font-size: 0.58rem; padding: 6px 2px; gap: 3px; }
  .type-tab svg { width: 13px; height: 13px; }

  /* Form controls: slight reduction */
  .form-control { padding: 9px 12px; font-size: 0.85rem; }
  .form-label { font-size: 0.75rem; }

  /* Segmented ECL control */
  .seg-btn { padding: 5px 3px; font-size: 0.7rem; }

  /* Style buttons */
  .style-btn { padding: 8px 4px; font-size: 0.7rem; }
  .style-btn svg { width: 16px; height: 16px; }

  /* Generate button: full width */
  .form-actions .btn { font-size: 0.85rem; padding: 10px 16px; }

  /* Preview canvas */
  #qr-canvas { max-width: 85%; }
  .qr-canvas-wrap { min-height: 200px; }

  /* Download */
  .btn-download { padding: 9px 10px; gap: 6px; }
  .dl-icon { width: 28px; height: 28px; border-radius: 6px; }
  .dl-info strong { font-size: 0.78rem; }
  .dl-info span { font-size: 0.68rem; }
  .dl-badge { display: none; } /* hide badge chip at extreme narrow to save space */

  /* History */
  .history-grid { grid-template-columns: repeat(2, 1fr); gap: 6px; }
  .history-card { padding: 8px; gap: 6px; border-radius: 10px; }
  .history-card-type { font-size: 0.6rem; }
  .history-card-content { font-size: 0.65rem; }
  .history-card-date { font-size: 0.62rem; }
  .history-action-btn { font-size: 0.65rem; }
  .section-title { font-size: 1.15rem; }
  .section-subtitle { font-size: 0.8rem; }

  /* Footer */
  .footer { padding: 20px 0; }
  .footer-copy { font-size: 0.72rem; }
}

/* ── TOUCH: always show history card actions on touch devices */
@media (hover: none) {
  .history-card-actions { opacity: 1; }
}

/* ── FOCUS VISIBLE GLOBAL ───────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
:focus:not(:focus-visible) { outline: none; }