/* ===== VARIABLES ===== */
:root {
  /* Primary palette — derived from ylop logo blue */
  --blue-50: #EFF6FF;
  --blue-100: #DBEAFE;
  --blue-200: #BFDBFE;
  --blue-300: #93C5FD;
  --blue-400: #60A5FA;
  --blue-500: #3B82F6;
  --blue-600: #2563EB;
  --blue-700: #1D4ED8;
  --blue-800: #1E40AF;
  --blue-900: #1E3A8A;

  /* Neutrals */
  --white: #FFFFFF;
  --gray-50: #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-300: #CBD5E1;
  --gray-400: #94A3B8;
  --gray-500: #64748B;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1E293B;
  --gray-900: #0F172A;

  /* Accent */
  --green-500: #10B981;
  --green-100: #D1FAE5;

  /* Layout */
  --max-width: 1200px;
  --section-padding: clamp(3rem, 8vw, 7rem) clamp(1rem, 5vw, 2rem);
  --border-radius: 12px;
  --border-radius-lg: 20px;
  --border-radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

/* ===== BASE ===== */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--gray-900);
  background-color: var(--white);
  font-size: 16px;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1rem, 5vw, 2rem);
}

section {
  padding: var(--section-padding);
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-weight: 700;
  color: var(--gray-900);
}

h1 {
  font-size: clamp(2.25rem, 5.5vw, 4rem);
  letter-spacing: -0.03em;
  line-height: 1.08;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  letter-spacing: -0.025em;
  line-height: 1.15;
}

h3 {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  letter-spacing: -0.01em;
}

.section-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--blue-600);
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--gray-500);
  max-width: 640px;
  line-height: 1.7;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: var(--border-radius);
  padding: 0.8125rem 1.75rem;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background: var(--blue-600);
  color: var(--white);
  box-shadow: 0 1px 3px rgba(37,99,235,0.3), 0 4px 12px rgba(37,99,235,0.15);
}

.btn-primary:hover {
  background: var(--blue-700);
  box-shadow: 0 1px 3px rgba(37,99,235,0.4), 0 8px 20px rgba(37,99,235,0.2);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--blue-600);
  border: 1.5px solid var(--blue-200);
}

.btn-outline:hover {
  background: var(--blue-50);
  border-color: var(--blue-400);
}

.btn-white {
  background: var(--white);
  color: var(--blue-700);
  box-shadow: var(--shadow-md);
}

.btn-white:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 0;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
  padding: 0.6rem 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-logo img {
  height: 32px;
  width: auto;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.navbar-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  transition: color var(--transition-fast);
}

.navbar-links a:hover {
  color: var(--blue-600);
}

.navbar-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.navbar-cta .btn {
  padding: 0.625rem 1.375rem;
  font-size: 0.875rem;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-800);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--white);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.mobile-nav.open {
  opacity: 1;
  pointer-events: all;
}

.mobile-nav a {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--gray-800);
}

.mobile-nav .btn {
  margin-top: 1rem;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 5rem;
  background: linear-gradient(
    170deg,
    var(--white) 0%,
    var(--blue-50) 50%,
    var(--white) 100%
  );
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59,130,246,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -15%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59,130,246,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 860px;
}

.hero h1 {
  margin-bottom: 1.25rem;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--blue-600), var(--blue-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.hero-form {
  display: flex;
  gap: 0.75rem;
  max-width: 460px;
  margin: 0 auto 3rem;
}

.hero-form input[type="email"] {
  flex: 1;
  padding: 0.875rem 1.25rem;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--border-radius);
  background: var(--white);
  font-size: 0.9375rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.hero-form input[type="email"]:focus {
  border-color: var(--blue-400);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}

.hero-form input[type="email"]::placeholder {
  color: var(--gray-400);
}

.hero-badges {
  display: flex;
  justify-content: center;
  gap: clamp(1rem, 4vw, 3rem);
  flex-wrap: wrap;
}

.hero-badge {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
}

.hero-badge-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-50);
  border-radius: 10px;
  color: var(--blue-600);
  flex-shrink: 0;
}

.hero-badge-icon svg {
  width: 20px;
  height: 20px;
}

.hero-badge-text {
  text-align: left;
}

.hero-badge-text span {
  display: block;
  font-size: 0.75rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.hero-badge-text strong {
  font-size: 0.9375rem;
  color: var(--gray-800);
}

/* ===== MARKET SECTION ===== */
.market {
  background: var(--gray-50);
}

.market .container {
  max-width: var(--max-width);
}

.market-header {
  text-align: center;
  margin-bottom: 3rem;
}

.market-header .section-subtitle {
  margin: 0.75rem auto 0;
}

.market-quote {
  position: relative;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius-lg);
  padding: 2rem 2.5rem;
  margin-bottom: 2.5rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.market-quote blockquote {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--gray-700);
  font-style: italic;
  line-height: 1.7;
}

.market-quote cite {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.875rem;
  font-style: normal;
  color: var(--gray-400);
  font-weight: 500;
}

.market-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.market-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  text-align: center;
  transition: box-shadow var(--transition-base);
}

.market-card:hover {
  box-shadow: var(--shadow-md);
}

.market-card h4 {
  font-size: 1.1rem;
  margin-bottom: 0.375rem;
  color: var(--blue-700);
}

.market-card p {
  font-size: 0.8125rem;
  color: var(--gray-500);
}

.market-card .volume {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.25rem;
  font-family: 'Space Grotesk', sans-serif;
}

.market-footnote {
  text-align: center;
  font-size: 0.75rem;
  color: var(--gray-400);
  margin-top: 1.25rem;
}

/* ===== PROBLEM SECTION ===== */
.problem {
  background: var(--white);
}

.problem .container {
  max-width: var(--max-width);
}

.problem-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.problem-text {
  max-width: 500px;
}

.problem-text p {
  color: var(--gray-600);
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
  line-height: 1.75;
}

.problem-stat {
  display: inline-flex;
  align-items: baseline;
  gap: 0.75rem;
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-radius: var(--border-radius);
  padding: 1.25rem 1.75rem;
}

.problem-stat .number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--blue-600);
}

.problem-stat .label {
  font-size: 0.9375rem;
  color: var(--gray-600);
  font-weight: 500;
}

.problem-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.problem-diagram {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius-lg);
  padding: 3rem;
  width: 100%;
  max-width: 420px;
  text-align: center;
}

.problem-diagram .lock-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-200);
  border-radius: 50%;
  color: var(--gray-400);
}

.problem-diagram .lock-icon svg {
  width: 36px;
  height: 36px;
}

.problem-diagram h4 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  color: var(--gray-800);
}

.problem-diagram p {
  font-size: 0.875rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ===== SOLUTION SECTION ===== */
.solution {
  background: var(--gray-50);
}

.solution .container {
  max-width: var(--max-width);
}

.solution-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.solution-header .section-subtitle {
  margin: 0.75rem auto 0;
}

.solution-flow {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  max-width: 900px;
  margin: 0 auto 3rem;
  position: relative;
}

.solution-step {
  flex: 1;
  text-align: center;
  position: relative;
  padding: 0 1rem;
}

.solution-step-num {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-600);
  color: var(--white);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.125rem;
  border-radius: 50%;
  margin: 0 auto 1rem;
  position: relative;
  z-index: 2;
}

.solution-step h4 {
  font-size: 0.9375rem;
  margin-bottom: 0.375rem;
}

.solution-step p {
  font-size: 0.8125rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* connector line */
.solution-step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 24px;
  left: calc(50% + 30px);
  width: calc(100% - 60px);
  height: 2px;
  background: var(--blue-200);
  z-index: 1;
}

.solution-callout {
  max-width: 640px;
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--blue-200);
  border-left: 4px solid var(--blue-600);
  border-radius: var(--border-radius);
  padding: 1.5rem 2rem;
  text-align: center;
}

.solution-callout p {
  font-size: 1.05rem;
  color: var(--gray-700);
  font-weight: 500;
}

/* ===== FEATURES SECTION ===== */
.features {
  background: var(--white);
}

.features .container {
  max-width: var(--max-width);
}

.features-header {
  text-align: center;
  margin-bottom: 3rem;
}

.features-header .section-subtitle {
  margin: 0.75rem auto 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius-lg);
  padding: 2.25rem 2rem;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  border-color: var(--blue-200);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.feature-card-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--blue-100);
  border-radius: 14px;
  color: var(--blue-600);
  margin-bottom: 1.25rem;
}

.feature-card-icon svg {
  width: 24px;
  height: 24px;
}

.feature-card h3 {
  margin-bottom: 0.625rem;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.feature-card .metric {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--blue-600);
  background: var(--blue-50);
  padding: 0.375rem 0.875rem;
  border-radius: var(--border-radius-full);
}

/* ===== HOW IT WORKS (MECHANICS) ===== */
.mechanics {
  background: var(--gray-900);
  color: var(--white);
}

.mechanics .container {
  max-width: var(--max-width);
}

.mechanics-header {
  text-align: center;
  margin-bottom: 3rem;
}

.mechanics-header .section-label {
  color: var(--blue-300);
}

.mechanics-header h2 {
  color: var(--white);
}

.mechanics-header .section-subtitle {
  color: var(--gray-400);
  margin: 0.75rem auto 0;
}

.mechanics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.mechanics-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--border-radius);
  padding: 1.75rem 1.5rem;
  transition: all var(--transition-base);
}

.mechanics-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.15);
}

.mechanics-card-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59,130,246,0.15);
  border-radius: 10px;
  color: var(--blue-300);
  margin-bottom: 1rem;
}

.mechanics-card-icon svg {
  width: 20px;
  height: 20px;
}

.mechanics-card h4 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.mechanics-card p {
  font-size: 0.875rem;
  color: var(--gray-400);
  line-height: 1.65;
}

/* ===== SECURITY / RISK ===== */
.security {
  background: var(--white);
}

.security .container {
  max-width: var(--max-width);
}

.security-header {
  text-align: center;
  margin-bottom: 3rem;
}

.security-header .section-subtitle {
  margin: 0.75rem auto 0;
}

.security-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
}

.security-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  display: flex;
  gap: 1.25rem;
  transition: all var(--transition-base);
}

.security-card:hover {
  border-color: var(--blue-200);
  box-shadow: var(--shadow-md);
}

.security-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green-100);
  border-radius: 12px;
  color: var(--green-500);
  flex-shrink: 0;
}

.security-card-icon svg {
  width: 22px;
  height: 22px;
}

.security-card h4 {
  font-size: 1rem;
  margin-bottom: 0.375rem;
}

.security-card p {
  font-size: 0.875rem;
  color: var(--gray-500);
  line-height: 1.65;
}

/* ===== FAQ ===== */
.faq {
  background: var(--gray-50);
}

.faq .container {
  max-width: 760px;
}

.faq-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: border-color var(--transition-base);
}

.faq-item.active {
  border-color: var(--blue-200);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  font-size: 1rem;
  color: var(--gray-800);
  text-align: left;
  background: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--blue-600);
}

.faq-chevron {
  width: 20px;
  height: 20px;
  color: var(--gray-400);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  color: var(--blue-600);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-answer-inner {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.9375rem;
  color: var(--gray-600);
  line-height: 1.75;
}

/* ===== WAITLIST CTA ===== */
.waitlist {
  background: linear-gradient(135deg, var(--blue-600) 0%, var(--blue-800) 100%);
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.waitlist::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.waitlist .container {
  position: relative;
  z-index: 1;
  max-width: 600px;
}

.waitlist h2 {
  color: var(--white);
  margin-bottom: 0.75rem;
}

.waitlist p {
  color: rgba(255,255,255,0.8);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.waitlist-form {
  display: flex;
  gap: 0.75rem;
  max-width: 460px;
  margin: 0 auto 1rem;
}

.waitlist-form input[type="email"] {
  flex: 1;
  padding: 0.875rem 1.25rem;
  border: 1.5px solid rgba(255,255,255,0.25);
  border-radius: var(--border-radius);
  background: rgba(255,255,255,0.1);
  color: var(--white);
  font-size: 0.9375rem;
  outline: none;
  transition: all var(--transition-fast);
}

.waitlist-form input[type="email"]::placeholder {
  color: rgba(255,255,255,0.5);
}

.waitlist-form input[type="email"]:focus {
  border-color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.15);
}

.waitlist-privacy {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.5);
}

/* Form success state */
.form-success {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem;
  font-weight: 500;
  color: var(--green-500);
}

.form-success.show {
  display: flex;
}

.form-success svg {
  width: 20px;
  height: 20px;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 3rem 0 2rem;
}

.footer .container {
  max-width: var(--max-width);
}

.footer-content {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 1.5rem;
}

.footer-brand img {
  height: 28px;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  font-size: 0.875rem;
  color: var(--gray-500);
  max-width: 260px;
  line-height: 1.6;
}

.footer-links h5 {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-300);
  margin-bottom: 0.75rem;
}

.footer-links a {
  display: block;
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: 0.5rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--white);
}

.footer-contact a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: 0.5rem;
  transition: color var(--transition-fast);
}

.footer-contact a:hover {
  color: var(--white);
}

.footer-bottom {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--gray-600);
}

/* ===== RESPONSIVE ===== */

/* Tablet */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-grid .feature-card:last-child {
    grid-column: 1 / -1;
    max-width: 50%;
    justify-self: center;
  }

  .mechanics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .market-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .solution-flow {
    flex-wrap: wrap;
    gap: 1.5rem;
  }

  .solution-step {
    flex: 0 0 calc(50% - 0.75rem);
  }

  .solution-step:not(:last-child)::after {
    display: none;
  }
}

/* Mobile landscape / small tablet */
@media (max-width: 768px) {
  .navbar-links,
  .navbar-cta {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-nav {
    display: flex;
  }

  .problem-content {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .problem-visual {
    order: -1;
  }

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

  .footer-content {
    flex-direction: column;
    gap: 2rem;
  }

  .features-grid .feature-card:last-child {
    max-width: 100%;
  }
}

/* Mobile */
@media (max-width: 640px) {
  .hero {
    min-height: auto;
    padding: 8rem 0 4rem;
  }

  .hero-form {
    flex-direction: column;
  }

  .hero-form .btn {
    width: 100%;
  }

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

  .hero-badge {
    width: 100%;
    max-width: 280px;
  }

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

  .features-grid .feature-card:last-child {
    max-width: 100%;
  }

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

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

  .solution-flow {
    flex-direction: column;
    align-items: center;
  }

  .solution-step {
    flex: none;
    width: 100%;
    max-width: 300px;
  }

  .waitlist-form {
    flex-direction: column;
  }

  .waitlist-form .btn {
    width: 100%;
  }

  .security-card {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }

  .problem-stat {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Large desktop */
@media (min-width: 1440px) {
  :root {
    --max-width: 1280px;
  }
}

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}