/* OneTool Contemporary Website Stylesheet - Award-Winning Clean Design */
:root {
  --bg-deep: #080B11;
  --bg-surface: #0E131F;
  --bg-card: rgba(18, 24, 38, 0.7);
  --bg-card-hover: rgba(28, 36, 56, 0.9);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 229, 255, 0.3);
  --border-hover: rgba(255, 255, 255, 0.18);
  
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --cyan: #00E5FF;
  --cyan-soft: rgba(0, 229, 255, 0.12);
  --emerald: #10B981;
  --emerald-soft: rgba(16, 185, 129, 0.12);
  --amber: #F59E0B;
  --purple: #A855F7;
  --rose: #F43F5E;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 30px -5px rgba(0, 229, 255, 0.25);
}

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

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Helvetica, Arial, sans-serif;
  background-color: var(--bg-deep);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  max-width: 100vw;
  line-height: 1.6;
  background: 
    radial-gradient(circle at 50% 0%, rgba(0, 229, 255, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 85% 20%, rgba(168, 85, 247, 0.05) 0%, transparent 35%),
    radial-gradient(circle at 15% 50%, rgba(16, 185, 129, 0.05) 0%, transparent 40%),
    var(--bg-deep);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 28px);
}

/* Typography & Accent Utils */
.gradient-text {
  background: linear-gradient(135deg, #FFFFFF 15%, #38BDF8 60%, #00E5FF 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.25);
  color: var(--cyan);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 36px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
  color: #FFFFFF;
}

.section-subtitle {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Navigation Bar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(8, 11, 17, 0.85);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  box-shadow: 0 2px 10px rgba(0, 229, 255, 0.3);
}

.brand-name {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.3px;
  color: #FFFFFF;
}

.brand-badge {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(0, 229, 255, 0.25);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 24px);
  list-style: none;
}

.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.play-svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
  flex-shrink: 0;
}

.btn-nav-play {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  color: #FFFFFF;
  padding: 7px 16px;
  font-size: 0.84rem;
  font-weight: 600;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.btn-nav-play:hover {
  background: rgba(0, 229, 255, 0.1);
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.25);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 6px;
}

/* Hero Section */
.hero {
  padding: clamp(40px, 7vw, 75px) 0 clamp(30px, 5vw, 60px);
  text-align: center;
  position: relative;
}

.hero-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.25);
  color: var(--cyan);
  font-size: clamp(0.75rem, 1.8vw, 0.84rem);
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}

.hero-pill-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  animation: pulseGlow 2s infinite ease-in-out;
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.5; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.15); }
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -1px;
  max-width: 860px;
  margin-bottom: 18px;
  color: #FFFFFF;
}

.hero-desc {
  font-size: clamp(0.95rem, 2.2vw, 1.15rem);
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 720px;
  margin-bottom: 28px;
}

.hero-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  background: linear-gradient(135deg, #0284C7, #00E5FF);
  color: #030816;
  font-size: 0.95rem;
  font-weight: 700;
  padding: 13px 28px;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.35);
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-hero-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 229, 255, 0.55);
}

.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 13px 24px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-hero-secondary:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.2);
}

.trust-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(10px, 2.5vw, 24px);
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.trust-item {
  white-space: nowrap;
}

.hero-visual-frame {
  max-width: 920px;
  width: 100%;
  border-radius: clamp(14px, 2.5vw, var(--radius-lg));
  overflow: hidden;
  box-shadow: 0 25px 65px -15px rgba(0, 0, 0, 0.8), 0 0 40px -10px rgba(0, 229, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: var(--bg-surface);
}

.hero-banner-img {
  width: 100%;
  height: auto;
  display: block;
}

/* The 21 Tools Section */
.tools-section {
  padding: clamp(50px, 7vw, 90px) 0;
  position: relative;
}

.filter-tabs-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 30px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

.filter-tabs-wrapper::-webkit-scrollbar {
  display: none;
}

.filter-tabs {
  display: inline-flex;
  gap: 8px;
  background: rgba(18, 24, 38, 0.6);
  padding: 5px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  max-width: 100%;
}

.filter-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  color: var(--text-primary);
}

.filter-btn.active {
  background: rgba(0, 229, 255, 0.12);
  border: 1px solid rgba(0, 229, 255, 0.35);
  color: var(--cyan);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  transition: all 0.22s ease;
  backdrop-filter: blur(8px);
}

.tool-card:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 229, 255, 0.35);
  background: var(--bg-card-hover);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 0 15px -3px rgba(0, 229, 255, 0.15);
}

.tool-card-top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.tool-icon-img {
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  border-radius: 12px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.04);
  padding: 4px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.tool-meta {
  display: flex;
  flex-direction: column;
}

.tool-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.2;
}

.tool-tag {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.6px;
  padding: 2px 7px;
  border-radius: 4px;
  text-transform: uppercase;
  margin-top: 4px;
  width: fit-content;
}

.tool-tag.nav { background: rgba(0, 229, 255, 0.1); color: var(--cyan); border: 1px solid rgba(0, 229, 255, 0.2); }
.tool-tag.gps { background: rgba(56, 189, 248, 0.1); color: #38BDF8; border: 1px solid rgba(56, 189, 248, 0.2); }
.tool-tag.fitness { background: rgba(16, 185, 129, 0.1); color: var(--emerald); border: 1px solid rgba(16, 185, 129, 0.2); }
.tool-tag.sensor { background: rgba(168, 85, 247, 0.1); color: var(--purple); border: 1px solid rgba(168, 85, 247, 0.2); }
.tool-tag.measure { background: rgba(245, 158, 11, 0.1); color: var(--amber); border: 1px solid rgba(245, 158, 11, 0.2); }
.tool-tag.camera { background: rgba(244, 63, 94, 0.1); color: var(--rose); border: 1px solid rgba(244, 63, 94, 0.2); }
.tool-tag.utility { background: rgba(148, 163, 184, 0.1); color: #CBD5E1; border: 1px solid rgba(148, 163, 184, 0.2); }
.tool-tag.audio { background: rgba(236, 72, 153, 0.1); color: #F472B6; border: 1px solid rgba(236, 72, 153, 0.2); }

.tool-about {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 14px;
  flex-grow: 1;
}

.tool-feature {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.06);
  border: 1px solid rgba(0, 229, 255, 0.18);
  padding: 4px 10px;
  border-radius: 6px;
  width: fit-content;
}

/* Interactive Screenshots Gallery */
.gallery-section {
  padding: clamp(50px, 7vw, 90px) 0;
  position: relative;
}

.gallery-showcase {
  display: grid;
  grid-template-columns: 290px 1fr;
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
  margin-top: 32px;
}

/* Device Column */
.device-column {
  display: flex;
  justify-content: center;
  position: sticky;
  top: 90px;
}

.phone-chassis {
  width: 280px;
  max-width: 100%;
  border-radius: 36px;
  padding: 10px;
  background: linear-gradient(135deg, #2D3748, #1A202C);
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.8), 0 0 35px -5px rgba(0, 229, 255, 0.25);
  border: 2px solid rgba(255, 255, 255, 0.15);
  position: relative;
}

.phone-notch {
  width: 80px;
  height: 16px;
  background: #000;
  border-radius: 0 0 10px 10px;
  margin: 0 auto 6px;
}

.phone-display {
  border-radius: 26px;
  overflow: hidden;
  background: #000;
  aspect-ratio: 9/19.5;
}

#previewScreenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: opacity 0.2s ease;
}

/* Selector Column */
.selector-column {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.active-tool-banner {
  background: rgba(18, 24, 38, 0.7);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  backdrop-filter: blur(10px);
}

.banner-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

#activeToolTitle {
  font-size: 1.15rem;
  font-weight: 700;
  color: #FFFFFF;
}

.banner-badge {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.3);
  padding: 3px 9px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
}

#activeToolDesc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

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

.screen-tab {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  cursor: pointer;
  text-align: left;
  font-size: 0.88rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.screen-tab:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border-hover);
}

.screen-tab.active {
  background: rgba(0, 229, 255, 0.12);
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 15px -3px rgba(0, 229, 255, 0.25);
}

.tab-icon {
  font-size: 1.2rem;
  line-height: 1;
  flex-shrink: 0;
}

.tab-text {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Why OneTool Section */
.why-section {
  padding: clamp(50px, 7vw, 90px) 0;
  position: relative;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: clamp(20px, 3.5vw, 28px);
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
}

.pillar-card:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 229, 255, 0.3);
  box-shadow: var(--shadow-card);
}

.pillar-badge-box {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.pillar-badge-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.pillar-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #FFFFFF;
}

.pillar-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Comparison Section */
.comparison-section {
  padding: clamp(50px, 7vw, 90px) 0;
}

.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(8px);
}

.comp-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.comp-table th, .comp-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.comp-table th {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
}

.comp-table .onetool-highlight {
  color: var(--cyan);
  font-weight: 600;
  background: rgba(0, 229, 255, 0.04);
  border-left: 1px solid rgba(0, 229, 255, 0.15);
  border-right: 1px solid rgba(0, 229, 255, 0.15);
}

.comp-table tr:last-child td {
  border-bottom: none;
}

/* FAQ Section */
.faq-section {
  padding: clamp(50px, 7vw, 90px) 0;
}

.faq-accordion {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.2s ease;
}

.faq-card.open {
  border-color: rgba(0, 229, 255, 0.3);
}

.faq-q {
  width: 100%;
  background: none;
  border: none;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 1rem;
  font-weight: 600;
  color: #FFFFFF;
  cursor: pointer;
  text-align: left;
}

.faq-toggle {
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--cyan);
  flex-shrink: 0;
  line-height: 1;
}

.faq-a {
  display: none;
  padding: 0 22px 20px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.faq-card.open .faq-a {
  display: block;
}

/* CTA Banner */
.cta-strip {
  padding: clamp(40px, 6vw, 70px) 0;
}

.cta-inner {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.15), rgba(0, 229, 255, 0.08));
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: clamp(30px, 5vw, 50px) 24px;
  text-align: center;
  box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.7);
}

.cta-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 12px;
  color: #FFFFFF;
}

.cta-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 24px;
}

.cta-btn {
  font-size: 1rem;
  padding: 14px 32px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: rgba(8, 11, 17, 0.95);
  padding: 50px 0 30px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.footer-brand-side {
  max-width: 360px;
}

.footer-brand {
  margin-bottom: 12px;
}

.footer-tagline {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.footer-support {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-support a {
  color: var(--cyan);
  font-weight: 500;
  margin-left: 4px;
}

.footer-support a:hover {
  text-decoration: underline;
}

.footer-nav-side {
  display: flex;
  gap: clamp(30px, 6vw, 60px);
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-heading {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
  .nav-menu {
    display: none;
  }
  
  .nav-menu.active {
    display: flex;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(8, 11, 17, 0.98);
    border-bottom: 1px solid var(--border-subtle);
    padding: 20px;
    backdrop-filter: blur(20px);
  }
  
  .nav-menu.active .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    width: 100%;
  }

  .nav-menu.active .nav-links a {
    font-size: 1.05rem;
    padding: 6px 0;
  }

  .mobile-toggle {
    display: block;
  }

  .gallery-showcase {
    grid-template-columns: 1fr;
  }

  .device-column {
    position: static;
    margin-bottom: 16px;
  }
}

@media (max-width: 640px) {
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .btn-hero-primary, .btn-hero-secondary {
    width: 100%;
  }

  .tools-grid {
    grid-template-columns: 1fr;
  }

  .screen-selector-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
  }
}