/* ==========================================================================
   Artes do Sul · M5Stack Device Lab — Masterpiece Cyber-Growth Design System
   Mobile-First Architecture & Dynamic Lab Tracker
   ========================================================================== */

:root {
  --bg-primary: #06080b;
  --bg-panel: #0d1218;
  --bg-card: rgba(18, 24, 34, 0.72);
  --bg-card-hover: rgba(26, 35, 48, 0.88);
  --bg-input: #121822;

  --accent-orange: #ff6b35; /* Growth / Action */
  --accent-cyan: #00d9ff;   /* Logic / Sensors / Tech */
  --accent-green: #10b981;  /* Success / Validation / In-Lab */
  --accent-purple: #a855f7; /* Audio / Speech */
  --accent-blue: #3b82f6;   /* HMI / Display */
  --accent-amber: #f59e0b;  /* Power / Wishlist */

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-dim: #64748b;

  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --border-active: rgba(0, 217, 255, 0.4);

  --glass-blur: blur(16px);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 20px rgba(0, 217, 255, 0.15);

  --font-display: "Bricolage Grotesque", "Syne", -apple-system, sans-serif;
  --font-body: "IBM Plex Sans", -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  color-scheme: dark;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  background-image:
    radial-gradient(ellipse 60% 40% at 20% -10%, rgba(255, 107, 53, 0.12), transparent 60%),
    radial-gradient(ellipse 50% 35% at 90% 0%, rgba(0, 217, 255, 0.1), transparent 50%),
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(16, 185, 129, 0.06), transparent 70%);
  background-attachment: fixed;
  padding-bottom: 40px;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-orange);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.shell {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 768px) {
  .shell {
    padding: 0 24px;
  }
}

/* ==========================================================================
   Sticky Topbar
   ========================================================================== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 12px 0;
  transition: background 0.3s, backdrop-filter 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.topbar.scrolled {
  background: rgba(6, 8, 11, 0.85);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent-orange), #d94814);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px rgba(255, 107, 53, 0.35);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: #fff;
  line-height: 1.1;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--accent-cyan);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tracker-mini {
  display: none;
  align-items: center;
  gap: 6px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 11.5px;
}

@media (min-width: 600px) {
  .tracker-mini {
    display: inline-flex;
  }
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.7; }
}

.tracker-val {
  font-weight: 700;
  color: var(--accent-green);
}

.tracker-lbl {
  color: var(--text-dim);
}

.btn-topbar {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.2s;
  min-height: 36px;
}

.btn-topbar:hover {
  border-color: var(--accent-cyan);
  color: #fff;
  background: rgba(0, 217, 255, 0.1);
}

.btn-shop {
  background: var(--accent-orange);
  border-color: var(--accent-orange);
  color: #fff;
  font-weight: 600;
}

.btn-shop:hover {
  background: #ff5214;
  border-color: #ff5214;
  color: #fff;
  box-shadow: 0 0 14px rgba(255, 107, 53, 0.4);
}

.btn-install-pwa {
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.2), rgba(0, 217, 255, 0.2));
  border-color: var(--accent-orange);
  color: var(--accent-orange);
  font-weight: 600;
  cursor: pointer;
}

.btn-install-pwa:hover {
  background: var(--accent-orange);
  color: #fff;
  border-color: var(--accent-orange);
  box-shadow: 0 0 15px rgba(255, 107, 53, 0.4);
}

/* ==========================================================================
   Hero Section Cinematic
   ========================================================================== */
.hero-cinematic {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 12px 0 24px;
  border: 1px solid var(--border);
  background: var(--bg-panel);
  box-shadow: var(--shadow-md);
}

.hero-bg-wrapper {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
  opacity: 0.28;
  filter: contrast(1.15) saturate(1.2);
}

.hero-gradient-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 8, 11, 0.6) 0%, rgba(6, 8, 11, 0.92) 75%, var(--bg-primary) 100%),
              linear-gradient(90deg, rgba(6, 8, 11, 0.8) 0%, transparent 60%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 24px 20px;
  display: grid;
  gap: 16px;
}

@media (min-width: 768px) {
  .hero-content {
    padding: 36px 32px 28px;
    gap: 18px;
  }
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge-glow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 107, 53, 0.15);
  border: 1px solid rgba(255, 107, 53, 0.4);
  color: var(--accent-orange);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.badge-pulse {
  display: inline-flex;
  align-items: center;
  background: rgba(0, 217, 255, 0.12);
  border: 1px solid rgba(0, 217, 255, 0.3);
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.hero-cinematic h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 5.5vw, 42px);
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: #ffffff;
  max-width: 18ch;
}

.hero-lead {
  color: var(--text-secondary);
  font-size: clamp(14px, 2vw, 16px);
  line-height: 1.6;
  max-width: 68ch;
}

/* Lab Tracker Card */
.lab-tracker-card {
  background: rgba(13, 18, 24, 0.85);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 16px;
  display: grid;
  gap: 12px;
  margin-top: 4px;
}

.tracker-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.tracker-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  color: #fff;
}

.tracker-sync-status {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
}

.tracker-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

@media (min-width: 680px) {
  .tracker-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.tracker-stat {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  cursor: pointer;
  transition: all 0.2s;
}

.tracker-stat:hover {
  border-color: var(--accent-cyan);
  background: rgba(0, 217, 255, 0.06);
}

.stat-num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}

#countInLab { color: var(--accent-green); }
#countWishlist { color: var(--accent-amber); }
#countTotal { color: var(--accent-cyan); }

.stat-label {
  font-size: 11.5px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-action {
  cursor: default;
  padding: 0;
  background: transparent;
  border: none;
  display: flex;
  align-items: stretch;
}

.btn-tracker-filter {
  width: 100%;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(0, 217, 255, 0.15), rgba(16, 185, 129, 0.15));
  border: 1px solid rgba(0, 217, 255, 0.35);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  padding: 10px;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 44px;
}

.btn-tracker-filter:hover {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-green));
  color: #06080b;
  box-shadow: var(--shadow-glow);
}

/* ==========================================================================
   Expansion Panel
   ========================================================================== */
.expansion-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--accent-orange);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  margin-bottom: 24px;
  display: grid;
  gap: 12px;
}

.expansion-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-orange);
}

.expansion-panel h2 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}

.expansion-goal {
  color: var(--text-secondary);
  font-size: 14px;
}

.expansion-priority {
  margin: 0;
  padding-left: 20px;
  color: var(--text-primary);
  font-size: 13.5px;
  display: grid;
  gap: 4px;
}

.expansion-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.btn-live, .btn-ghost {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-live {
  background: var(--accent-orange);
  border: 1px solid var(--accent-orange);
  color: #fff;
}

.btn-live:hover {
  background: #ff5518;
  box-shadow: 0 0 14px rgba(255, 107, 53, 0.4);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
}

.btn-ghost:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.buy-disclaimer {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.4;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}

/* ==========================================================================
   Filter Dashboard & Mobile-First Horizontal Tracks
   ========================================================================== */
.filter-dashboard {
  display: grid;
  gap: 14px;
  margin-bottom: 20px;
}

.filter-group {
  display: grid;
  gap: 8px;
}

.group-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2px;
}

.group-title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  font-weight: 600;
}

.group-hint {
  font-size: 11px;
  color: var(--accent-cyan);
  opacity: 0.7;
  display: inline-block;
}

@media (min-width: 768px) {
  .group-hint { display: none; }
}

/* Horizontal Scrolling Track for Mobile */
.chips-track {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
  -webkit-overflow-scrolling: touch;
}

.chips-track::-webkit-scrollbar {
  height: 4px;
}

.chips-track::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
}

.chips-track button {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s var(--ease);
  min-height: 40px;
  white-space: nowrap;
}

.chips-track button:hover {
  border-color: var(--accent-cyan);
  color: #fff;
  transform: translateY(-1px);
}

.chips-track button[aria-pressed="true"] {
  background: rgba(0, 217, 255, 0.14);
  border-color: var(--accent-cyan);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 0 12px rgba(0, 217, 255, 0.25);
}

/* ==========================================================================
   Toolbar (Search, Status Pills, Result Summary)
   ========================================================================== */
.toolbar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 24px;
}

@media (min-width: 860px) {
  .toolbar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.search-box {
  position: relative;
  flex: 1 1 260px;
  min-width: 0;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  color: var(--text-dim);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 10px 36px 10px 34px;
  background: var(--bg-input);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  outline: none;
  min-height: 42px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-box input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.2);
}

.search-clear {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 14px;
  cursor: pointer;
  padding: 4px;
}

.search-clear:hover {
  color: #fff;
}

.status-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.status-pills button {
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 38px;
}

.status-pills button:hover {
  border-color: var(--border-strong);
  color: #fff;
}

.status-pills button[aria-pressed="true"] {
  background: rgba(255, 107, 53, 0.16);
  border-color: var(--accent-orange);
  color: #fff;
  font-weight: 600;
}

.result-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.count-badge {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}

.btn-reset-filters {
  padding: 6px 10px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11.5px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-reset-filters:hover {
  border-color: var(--accent-orange);
  color: var(--accent-orange);
}

/* ==========================================================================
   Category Board & Cards Grid
   ========================================================================== */
.board {
  display: grid;
  gap: 32px;
}

.cat-block {
  display: grid;
  gap: 16px;
}

.cat-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
}

.cat-head h2 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}

.cat-head p {
  color: var(--text-dim);
  font-size: 13.5px;
  flex: 1 1 240px;
}

.cat-n {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--accent-cyan);
}

/* Responsive Grid */
.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Masterpiece Device Card */
.card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
  position: relative;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-active);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  background: var(--bg-card-hover);
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.sku-badge {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--accent-cyan);
  background: rgba(0, 217, 255, 0.08);
  border: 1px solid rgba(0, 217, 255, 0.25);
  padding: 2px 8px;
  border-radius: 4px;
}

.card-actions-top {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-fav {
  background: transparent;
  border: none;
  font-size: 16px;
  cursor: pointer;
  padding: 2px;
  line-height: 1;
  opacity: 0.5;
  transition: opacity 0.2s, transform 0.15s;
}

.btn-fav:hover {
  opacity: 1;
  transform: scale(1.2);
}

.btn-fav.active {
  opacity: 1;
}

.badge-lab {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-lab.in_lab {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: var(--accent-green);
}

.badge-lab.expansion {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: var(--accent-amber);
}

.badge-lab.compatible {
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: #93c5fd;
}

.card h3 {
  font-family: var(--font-display);
  font-size: 17.5px;
  font-weight: 700;
  color: #fff;
  line-height: 1.25;
}

.card-soc {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  margin-top: -6px;
}

.card-role {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.card-purpose {
  font-size: 13px;
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.02);
  border-left: 2px solid var(--accent-cyan);
  padding: 6px 10px;
  border-radius: 0 4px 4px 0;
}

/* Chips in Card */
.card-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.chip-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--chip-color, var(--text-dim));
}

.card-projects {
  font-size: 12px;
  color: var(--text-dim);
}

.card-projects code {
  font-family: var(--font-mono);
  color: var(--accent-orange);
  background: rgba(255, 107, 53, 0.1);
  padding: 1px 5px;
  border-radius: 3px;
}

.card-notes {
  margin: 0;
  padding-left: 18px;
  font-size: 12.5px;
  color: var(--text-dim);
  display: grid;
  gap: 3px;
}

/* Card Buttons / Utility */
.card-actions-bottom {
  margin-top: auto;
  display: grid;
  gap: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.btn-card-guide {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 12px;
  background: rgba(0, 217, 255, 0.12);
  border: 1px solid rgba(0, 217, 255, 0.35);
  color: #fff;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  transition: all 0.2s;
  min-height: 38px;
}

.btn-card-guide:hover {
  background: var(--accent-cyan);
  color: #06080b;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 217, 255, 0.3);
}

.buy-row {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.buy-btn {
  flex: 1 1 70px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 6px 8px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all 0.15s;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.buy-btn:hover {
  border-color: var(--border-strong);
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.buy-official { border-color: rgba(255, 107, 53, 0.3); color: var(--accent-orange); }
.buy-official:hover { background: rgba(255, 107, 53, 0.15); border-color: var(--accent-orange); }

.buy-shopee { border-color: rgba(238, 77, 45, 0.3); color: #ff7854; }
.buy-ml { border-color: rgba(255, 230, 0, 0.3); color: #ffe600; }
.buy-amz { border-color: rgba(255, 153, 0, 0.3); color: #ffb84d; }

.btn-copy-yaml {
  background: transparent;
  border: 1px dashed var(--border-strong);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.btn-copy-yaml:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* Empty State */
.empty {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-dim);
  font-size: 15px;
  background: var(--bg-panel);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
}

/* ==========================================================================
   Toast Notification
   ========================================================================== */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #0d1218;
  border: 1px solid var(--accent-green);
  color: #fff;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 13px;
  box-shadow: var(--shadow-md), 0 0 16px rgba(16, 185, 129, 0.3);
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

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

/* ==========================================================================
   Floating Go To Top Button
   ========================================================================== */
.btn-goto-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(13, 18, 24, 0.9);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-strong);
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: all 0.25s var(--ease);
  z-index: 99;
}

.btn-goto-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.btn-goto-top:hover {
  background: var(--accent-orange);
  border-color: var(--accent-orange);
  transform: translateY(-3px);
  box-shadow: 0 0 16px rgba(255, 107, 53, 0.4);
}

/* ==========================================================================
   Branded Artes do Sul Footer
   ========================================================================== */
.footer-artesdosul {
  margin-top: 56px;
  border-top: 1px solid var(--border);
  padding-top: 36px;
  display: grid;
  gap: 24px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 680px) {
  .footer-top {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.f-brand-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: #fff;
}

.f-brand-title span {
  color: var(--accent-orange);
}

.f-brand-desc {
  font-size: 13.5px;
  color: var(--text-dim);
  margin-top: 6px;
  max-width: 36ch;
}

.footer-links-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.f-col-title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  font-weight: 600;
}

.footer-links-group a {
  font-size: 13px;
  color: var(--text-dim);
}

.footer-links-group a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 16px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 12.5px;
  color: var(--text-dim);
}

.signature a {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--accent-orange);
}