/* =============================================
   CopperPlug Mail — Design System v2
   ============================================= */

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

:root {
  --c900: #78350f;
  --c800: #92400e;
  --c700: #b45309;
  --c600: #d97706;
  --c500: #f59e0b;
  --c400: #fbbf24;

  --bg:        #090909;
  --bg-s:      #111113;
  --bg-r:      #18181b;
  --bg-o:      #1e1e22;
  --bg-sub:    #27272a;

  --border:    #27272a;
  --border-m:  #3f3f46;

  --t1: #fafafa;
  --t2: #a1a1aa;
  --t3: #71717a;
  --t4: #3f3f46;

  --glow:      rgba(217,119,6,0.15);
  --glow-ring: rgba(217,119,6,0.3);

  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 18px;
  --r-xl: 22px;

  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.65);
  --shadow-c:  0 0 48px rgba(180,83,9,0.22);

  --ease: cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--t1);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--c500); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* =============================================
   BUTTONS
   ============================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--r-md);
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s var(--ease);
  white-space: nowrap;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  letter-spacing: 0.01em;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: scale(0.98); }

/* Shimmer sweep on primary */
.btn-primary {
  background: linear-gradient(135deg, var(--c600) 0%, var(--c700) 100%);
  color: #fff;
  border-color: rgba(255,255,255,0.08);
  box-shadow: 0 1px 0 rgba(255,255,255,0.12) inset, 0 2px 8px rgba(180,83,9,0.3);
}
.btn-primary::after {
  content: '';
  position: absolute;
  top: 0; left: -120%;
  width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
  transform: skewX(-20deg);
  transition: left 0.55s ease;
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--c500) 0%, var(--c600) 100%);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(217,119,6,0.4);
}
.btn-primary:hover::after { left: 150%; }

.btn-ghost {
  background: transparent;
  color: var(--t2);
}
.btn-ghost:hover { color: var(--t1); background: rgba(255,255,255,0.05); }

.btn-outline {
  background: rgba(255,255,255,0.03);
  color: var(--t1);
  border-color: var(--border-m);
}
.btn-outline:hover {
  border-color: var(--glow-ring);
  color: var(--c500);
  background: var(--glow);
}

.btn-lg { padding: 13px 28px; font-size: 15px; border-radius: var(--r-lg); }
.btn-full { width: 100%; }

/* =============================================
   NAVBAR
   ============================================= */

.navbar {
  position: sticky; top: 0; z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(9,9,9,0.75);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}

.nav-inner {
  display: flex;
  align-items: center;
  height: 60px;
}

.logo {
  font-size: 18px;
  font-weight: 800;
  color: var(--t1);
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  flex-shrink: 0;
  margin-right: 36px;
}
.logo:hover { text-decoration: none; color: var(--t1); }

.logo-mark {
  width: 30px; height: 30px;
  background: linear-gradient(145deg, var(--c600), var(--c800));
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 14px rgba(180,83,9,0.45), 0 1px 0 rgba(255,255,255,0.12) inset;
  flex-shrink: 0;
}
.logo-mark svg { width: 15px; height: 15px; color: #fff; }
.logo-accent { color: var(--c500); }
.logo-sm .logo-mark { width: 26px; height: 26px; border-radius: 7px; }
.logo-sm .logo-mark svg { width: 13px; height: 13px; }
.logo-sm { font-size: 16px; }

.nav-links { display: flex; gap: 2px; flex: 1; }
.nav-links a {
  color: var(--t2); font-size: 14px; font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--r-sm);
  transition: color 0.18s, background 0.18s;
}
.nav-links a:hover { color: var(--t1); background: rgba(255,255,255,0.05); text-decoration: none; }

.nav-cta { display: flex; gap: 8px; margin-left: auto; }

.navbar-auth .nav-auth-note {
  margin-left: auto; color: var(--t3); font-size: 14px;
}
.navbar-auth .nav-auth-note a { color: var(--c500); }

/* =============================================
   HERO
   ============================================= */

.hero {
  padding: 88px 0 72px;
  position: relative;
  overflow: hidden;
  background-image: radial-gradient(circle, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* Orb 1 — large warm copper, top-left */
.hero-orb-1 {
  position: absolute;
  top: -280px; left: -160px;
  width: 780px; height: 780px;
  background: radial-gradient(ellipse at center, rgba(180,83,9,0.22) 0%, transparent 65%);
  pointer-events: none;
  animation: orbDrift 9s ease-in-out infinite alternate;
}
/* Orb 2 — amber, bottom-right */
.hero-orb-2 {
  position: absolute;
  bottom: -220px; right: -80px;
  width: 600px; height: 600px;
  background: radial-gradient(ellipse at center, rgba(245,158,11,0.1) 0%, transparent 65%);
  pointer-events: none;
  animation: orbDrift 11s ease-in-out 2s infinite alternate-reverse;
}

@keyframes orbDrift {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(28px, -28px) scale(1.06); }
}

.hero-inner {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 56px;
  align-items: center;
}

.hero-content { max-width: 560px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245,158,11,0.07);
  border: 1px solid rgba(245,158,11,0.18);
  color: var(--c400);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px 5px 10px;
  border-radius: 999px;
  margin-bottom: 26px;
  letter-spacing: 0.2px;
}
.badge-dot {
  width: 6px; height: 6px;
  background: var(--c500);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--c500);
  animation: badgePulse 2s ease-in-out infinite;
}
@keyframes badgePulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.4; transform: scale(0.75); }
}

.hero h1 {
  font-size: clamp(36px, 5vw, 62px);
  font-weight: 800;
  line-height: 1.07;
  letter-spacing: -2px;
  margin-bottom: 22px;
}

.gradient-text {
  background: linear-gradient(130deg, var(--c400) 0%, var(--c600) 55%, var(--c800) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 17px;
  color: var(--t2);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 440px;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 24px; }

.hero-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13px;
  color: var(--t3);
}
.hero-meta-item { display: flex; align-items: center; gap: 6px; }
.hero-meta-item svg { width: 13px; height: 13px; color: var(--c500); }

/* ---- Email Mockup ---- */

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.hero-visual::before {
  content: '';
  position: absolute;
  inset: -60px;
  background: radial-gradient(ellipse at center, rgba(180,83,9,0.14) 0%, transparent 65%);
  pointer-events: none;
}

.mockup-frame {
  width: 100%;
  max-width: 510px;
  background: var(--bg-r);
  border: 1px solid var(--border-m);
  border-radius: var(--r-xl);
  overflow: hidden;
  position: relative;
  z-index: 1;
  box-shadow:
    var(--shadow-lg),
    0 0 0 1px rgba(255,255,255,0.04) inset,
    0 1px 0 rgba(255,255,255,0.07) inset;
  transform: perspective(1200px) rotateY(-7deg) rotateX(2deg);
  transition: transform 0.45s var(--ease);
}
.mockup-frame:hover { transform: perspective(1200px) rotateY(-3deg) rotateX(1deg); }

/* Gradient chrome line at top of mockup */
.mockup-frame::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent 5%, var(--c700) 35%, var(--c400) 65%, transparent 95%);
  z-index: 10;
}

.mockup-topbar {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px;
  background: var(--bg-o);
  border-bottom: 1px solid var(--border);
}
.topbar-dots { display: flex; gap: 5px; }
.topbar-dot {
  width: 10px; height: 10px; border-radius: 50%;
}
.dot-r { background: #ff5f57; }
.dot-y { background: #febc2e; }
.dot-g { background: #28c840; }
.topbar-addr {
  flex: 1;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 4px 10px;
  font-size: 11px;
  color: var(--t4);
  text-align: center;
  font-family: 'SF Mono', Consolas, monospace;
  letter-spacing: -0.3px;
}

.mockup-body { display: flex; height: 310px; }

.inbox-sidebar {
  width: 136px; flex-shrink: 0;
  background: var(--bg-s);
  border-right: 1px solid var(--border);
  padding: 12px 8px;
  display: flex; flex-direction: column; gap: 3px;
}

.compose-pill {
  background: linear-gradient(135deg, var(--c600), var(--c700));
  color: #fff; border: none;
  border-radius: 20px;
  padding: 7px 10px;
  font-size: 11px; font-weight: 600;
  cursor: default; text-align: center;
  font-family: inherit;
  box-shadow: 0 2px 8px rgba(180,83,9,0.35);
  margin-bottom: 8px;
}

.folder-list { list-style: none; flex: 1; }
.folder-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 5px 9px;
  border-radius: var(--r-sm);
  font-size: 11.5px; color: var(--t3);
  cursor: default; margin-bottom: 1px;
  transition: background 0.15s;
}
.folder-item:hover { background: rgba(255,255,255,0.04); color: var(--t2); }
.folder-item.f-active {
  background: rgba(217,119,6,0.12);
  color: var(--c400);
  font-weight: 600;
}
.f-badge {
  background: var(--c700); color: #fff;
  font-size: 9px; font-weight: 700;
  padding: 1px 5px; border-radius: 999px;
}
.f-badge.dim { background: var(--bg-sub); color: var(--t3); }

.storage-wrap { margin-top: auto; padding-top: 8px; }
.storage-lbl { font-size: 9.5px; color: var(--t4); margin-bottom: 4px; }
.storage-track { height: 3px; background: var(--border); border-radius: 99px; overflow: hidden; }
.storage-fill {
  height: 100%; width: 24%;
  background: linear-gradient(90deg, var(--c700), var(--c500));
  border-radius: 99px;
}

.inbox-list { flex: 1; overflow: hidden; background: var(--bg-r); }

.inbox-row {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 13px;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  cursor: default;
  transition: background 0.12s;
}
.inbox-row:hover { background: rgba(255,255,255,0.025); }
.inbox-row.unread { background: rgba(217,119,6,0.04); }
.inbox-row.selected { background: rgba(217,119,6,0.09); }

.av {
  width: 28px; height: 28px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 700; color: #fff; flex-shrink: 0;
}
.av1 { background: linear-gradient(135deg, #b45309, #92400e); }
.av2 { background: linear-gradient(135deg, #6366f1, #8b5cf6); }
.av3 { background: linear-gradient(135deg, #f59e0b, #d97706); }
.av4 { background: linear-gradient(135deg, #10b981, #059669); }
.av5 { background: linear-gradient(135deg, #3b82f6, #2563eb); }

.inbox-meta { flex: 1; min-width: 0; }
.inbox-from {
  font-size: 11.5px; font-weight: 600; color: var(--t2);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.inbox-subj {
  font-size: 11px; color: var(--t4);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 1px;
}
.unread .inbox-from { color: var(--t1); }
.unread .inbox-subj { color: var(--t3); }
.inbox-time { font-size: 10px; color: var(--t4); flex-shrink: 0; }

/* =============================================
   STATS BAR
   ============================================= */

.stats {
  padding: 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-s);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat {
  padding: 28px 24px;
  text-align: center;
  border-right: 1px solid var(--border);
}
.stat:last-child { border-right: none; }
.stat-num {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -1.5px;
  background: linear-gradient(135deg, var(--t1), var(--t2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 5px;
}
.stat-lbl { font-size: 13px; color: var(--t3); font-weight: 500; }

/* =============================================
   TRUST BAR
   ============================================= */

.trust-bar {
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.trust-lbl {
  font-size: 11px; color: var(--t4);
  text-transform: uppercase; letter-spacing: 2px; font-weight: 600;
  margin-bottom: 18px;
}
.trust-logos { display: flex; gap: 44px; justify-content: center; flex-wrap: wrap; }
.trust-logos span { color: var(--t4); font-weight: 700; font-size: 14px; letter-spacing: -0.2px; transition: color 0.2s; }
.trust-logos span:hover { color: var(--t2); }

/* =============================================
   FEATURES
   ============================================= */

.features { padding: 100px 0; }

.section-header { text-align: center; margin-bottom: 60px; }
.section-eyebrow {
  display: inline-block;
  font-size: 11px; font-weight: 700;
  color: var(--c500);
  text-transform: uppercase; letter-spacing: 2.5px;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 14px;
  line-height: 1.12;
}
.section-sub {
  color: var(--t2); font-size: 16px;
  max-width: 460px; margin: 0 auto; line-height: 1.7;
}

/* Grid with hairline separators */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  overflow: hidden;
}

.feature-card {
  background: var(--bg-s);
  padding: 36px 30px;
  position: relative;
  transition: background 0.2s;
}
.feature-card:hover { background: var(--bg-r); }

/* Top glow line that fades in on hover */
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--c600), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.feature-card:hover::before { opacity: 1; }

.feat-icon {
  width: 44px; height: 44px;
  background: rgba(217,119,6,0.09);
  border: 1px solid rgba(217,119,6,0.18);
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  color: var(--c500);
  transition: background 0.2s, box-shadow 0.2s;
}
.feature-card:hover .feat-icon {
  background: rgba(217,119,6,0.15);
  box-shadow: 0 0 18px rgba(217,119,6,0.22);
}
.feat-icon svg { width: 20px; height: 20px; }

.feature-card h3 { font-size: 15px; font-weight: 700; margin-bottom: 10px; letter-spacing: -0.2px; }
.feature-card p { color: var(--t3); font-size: 14px; line-height: 1.7; }

/* =============================================
   PRICING
   ============================================= */

.pricing { padding: 100px 0; background: var(--bg-s); border-top: 1px solid var(--border); }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  overflow: visible;
  max-width: 860px;
  margin: 0 auto;
  position: relative;
}

.plan-card {
  background: var(--bg-s);
  padding: 36px 28px;
  position: relative;
}
.plan-card:first-child { border-radius: var(--r-xl) 0 0 var(--r-xl); overflow: hidden; }
.plan-card:last-child  { border-radius: 0 var(--r-xl) var(--r-xl) 0; overflow: hidden; }

.plan-featured {
  background: var(--bg-r);
  border: 1px solid rgba(217,119,6,0.35);
  border-radius: var(--r-xl);
  margin: -18px -1px;
  padding: 54px 28px 38px;
  position: relative; z-index: 2;
  box-shadow: var(--shadow-c), var(--shadow-lg);
  overflow: hidden;
}
/* Subtle gradient background */
.plan-featured::after {
  content: '';
  position: absolute;
  top: -100px; left: 50%; transform: translateX(-50%);
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(217,119,6,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.plan-badge {
  position: absolute;
  top: 18px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, var(--c600), var(--c700));
  color: #fff;
  font-size: 11px; font-weight: 700;
  padding: 4px 14px;
  border-radius: 999px;
  white-space: nowrap;
  letter-spacing: 0.4px;
  box-shadow: 0 2px 10px rgba(180,83,9,0.45);
}

.plan-name {
  font-size: 11px; font-weight: 700;
  color: var(--t3); text-transform: uppercase;
  letter-spacing: 2px; margin-bottom: 14px;
}
.plan-price {
  font-size: 52px; font-weight: 800;
  letter-spacing: -2px;
  color: var(--t1); line-height: 1;
  margin-bottom: 6px;
}
.plan-price span { font-size: 15px; font-weight: 500; color: var(--t3); letter-spacing: 0; }
.plan-desc { font-size: 13px; color: var(--t3); margin-bottom: 22px; line-height: 1.5; }

.plan-divider { height: 1px; background: var(--border); margin: 18px 0; }

.plan-features { list-style: none; margin-bottom: 26px; display: flex; flex-direction: column; gap: 11px; }
.plan-features li {
  color: var(--t2); font-size: 13px;
  display: flex; align-items: flex-start; gap: 10px; line-height: 1.4;
}
.pf-check { color: var(--c500); flex-shrink: 0; margin-top: 1px; }
.pf-check svg { width: 14px; height: 14px; }

/* =============================================
   CTA BANNER
   ============================================= */

.cta-banner {
  padding: 100px 0;
  text-align: center;
  position: relative; overflow: hidden;
  border-top: 1px solid var(--border);
  background-image: radial-gradient(circle, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 28px 28px;
}
.cta-banner::before {
  content: '';
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 700px; height: 420px;
  background: radial-gradient(ellipse, rgba(180,83,9,0.16) 0%, transparent 65%);
  pointer-events: none;
}
.cta-inner { position: relative; z-index: 1; }
.cta-inner h2 {
  font-size: clamp(30px, 4.5vw, 50px);
  font-weight: 800;
  letter-spacing: -1.5px;
  margin-bottom: 14px;
}
.cta-inner p { color: var(--t2); font-size: 17px; margin-bottom: 36px; }
.cta-note { margin-top: 16px; color: var(--t4); font-size: 13px; }

/* =============================================
   FOOTER
   ============================================= */

.footer {
  padding: 64px 0 36px;
  border-top: 1px solid var(--border);
  background: var(--bg-s);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}
.footer-brand p {
  color: var(--t3); font-size: 14px;
  line-height: 1.65; margin-top: 14px; max-width: 210px;
}
.footer-col h4 {
  font-size: 12px; font-weight: 700;
  color: var(--t1); text-transform: uppercase;
  letter-spacing: 1.2px; margin-bottom: 18px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 11px; }
.footer-col li a { color: var(--t3); font-size: 14px; transition: color 0.18s; }
.footer-col li a:hover { color: var(--t1); text-decoration: none; }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
}
.footer-copy { color: var(--t4); font-size: 13px; }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { color: var(--t4); font-size: 13px; transition: color 0.18s; }
.footer-bottom-links a:hover { color: var(--t2); text-decoration: none; }

/* =============================================
   AUTH PAGE
   ============================================= */

body.auth-page {
  background-color: var(--bg);
  background-image: radial-gradient(circle, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 28px 28px;
}

.auth-main {
  min-height: calc(100vh - 60px);
  display: flex; align-items: flex-start; justify-content: center;
  gap: 52px;
  padding: 48px 24px 80px;
  max-width: 1040px; margin: 0 auto;
  position: relative;
}
.auth-main::before {
  content: '';
  position: fixed; top: 20%; left: 50%; transform: translateX(-50%);
  width: 560px; height: 380px;
  background: radial-gradient(ellipse, rgba(180,83,9,0.1) 0%, transparent 70%);
  pointer-events: none;
}

.auth-card {
  background: rgba(24,24,27,0.85);
  border: 1px solid var(--border-m);
  border-radius: var(--r-xl);
  padding: 40px 36px;
  width: 100%; max-width: 478px;
  flex-shrink: 0;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(20px);
  position: relative; z-index: 1;
}
.auth-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent 5%, var(--c700) 35%, var(--c400) 65%, transparent 95%);
  border-radius: var(--r-xl) var(--r-xl) 0 0;
}

.auth-header { margin-bottom: 30px; }
.auth-header h1 { font-size: 23px; font-weight: 800; letter-spacing: -0.6px; margin-bottom: 6px; }
.auth-header p { color: var(--t3); font-size: 14px; }

.auth-form { display: flex; flex-direction: column; gap: 17px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }

label { font-size: 13px; font-weight: 600; color: var(--t2); letter-spacing: 0.1px; }
.label-hint { font-weight: 400; color: var(--t4); }

input[type="text"],
input[type="email"],
input[type="password"] {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-m);
  border-radius: var(--r-sm);
  color: var(--t1);
  font-family: inherit; font-size: 14px;
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s, background 0.18s;
  width: 100%;
}
input::placeholder { color: var(--t4); }
input:focus {
  border-color: rgba(217,119,6,0.55);
  background: rgba(255,255,255,0.06);
  box-shadow: 0 0 0 3px rgba(217,119,6,0.11);
}

.input-pfx-wrap { position: relative; display: flex; align-items: center; }
.input-pfx {
  position: absolute; left: 12px;
  color: var(--t4); font-size: 14px;
  pointer-events: none; user-select: none;
}
.input-pfx-wrap input { padding-left: 26px; }

.password-strength {
  font-size: 11px; font-weight: 600;
  margin-top: 4px; height: 14px; transition: color 0.2s;
}
.strength-weak   { color: #ef4444; }
.strength-fair   { color: #f97316; }
.strength-good   { color: #eab308; }
.strength-strong { color: #22c55e; }

.plan-radio-group { display: flex; flex-direction: column; gap: 8px; }
.plan-radio { cursor: pointer; display: block; }
.plan-radio input[type=radio] { display: none; }

.plan-radio-box {
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-m);
  border-radius: var(--r-sm);
  padding: 11px 14px;
  transition: all 0.18s;
}
.plan-radio-box:hover { border-color: rgba(245,158,11,0.3); background: rgba(245,158,11,0.03); }
.plan-radio-box.selected {
  border-color: rgba(217,119,6,0.55);
  background: rgba(217,119,6,0.07);
  box-shadow: 0 0 0 1px rgba(217,119,6,0.18);
}
.plan-radio-name { font-size: 13px; font-weight: 600; color: var(--t1); display: flex; align-items: center; gap: 8px; }
.plan-radio-price { font-size: 13px; color: var(--t3); }

.badge-popular {
  background: linear-gradient(135deg, var(--c600), var(--c700));
  color: #fff; font-size: 9px; font-weight: 700;
  padding: 2px 7px; border-radius: 999px; letter-spacing: 0.3px;
}

.form-check { margin-top: -2px; }
.checkbox-label {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 13px; color: var(--t3); font-weight: 400; cursor: pointer;
}
.checkbox-label input[type=checkbox] {
  width: 15px; height: 15px;
  flex-shrink: 0; margin-top: 2px;
  accent-color: var(--c600); cursor: pointer;
}

.form-disclaimer { font-size: 11px; color: var(--t4); line-height: 1.5; text-align: center; }

.auth-aside { flex: 1; max-width: 390px; padding-top: 4px; position: relative; z-index: 1; }
.aside-inner h2 { font-size: 20px; font-weight: 800; margin-bottom: 22px; letter-spacing: -0.4px; }

.aside-bullets { list-style: none; display: flex; flex-direction: column; gap: 15px; margin-bottom: 30px; }
.aside-bullets li { display: flex; gap: 12px; font-size: 14px; color: var(--t2); line-height: 1.5; }
.bullet-icon {
  width: 20px; height: 20px;
  background: rgba(217,119,6,0.1);
  border: 1px solid rgba(217,119,6,0.2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; color: var(--c400); font-weight: 700;
  flex-shrink: 0; margin-top: 1px;
}
.aside-bullets strong { color: var(--t1); }

.aside-testimonial {
  background: rgba(24,24,27,0.7);
  border: 1px solid var(--border-m);
  border-radius: var(--r-lg);
  padding: 22px;
  backdrop-filter: blur(8px);
  position: relative;
}
.aside-testimonial::before {
  content: '\201C';
  position: absolute; top: 2px; left: 18px;
  font-size: 44px; color: var(--c700);
  line-height: 1; font-family: Georgia, serif;
}
.aside-testimonial p {
  font-size: 14px; color: var(--t2);
  font-style: italic; margin-bottom: 16px;
  line-height: 1.65; padding-top: 10px;
}
.testimonial-author { display: flex; align-items: center; gap: 10px; }
.testimonial-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: linear-gradient(135deg, var(--c600), var(--c800));
  color: #fff; font-size: 11px; font-weight: 700;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.testimonial-author strong { font-size: 13px; color: var(--t1); }
.testimonial-author span { font-size: 12px; color: var(--t4); }

/* =============================================
   FORM VALIDATION STATES
   ============================================= */

/* Error border + glow on text/email/password inputs */
.form-group.has-error input[type="text"],
.form-group.has-error input[type="email"],
.form-group.has-error input[type="password"],
.form-group.has-error .input-pfx-wrap input {
  border-color: rgba(239, 68, 68, 0.65) !important;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1) !important;
}

/* Error message text under a field */
.field-error {
  display: block;
  font-size: 11.5px;
  color: #f87171;
  margin-top: 5px;
  min-height: 15px;
  line-height: 1.4;
  transition: opacity 0.2s;
}
.field-error:empty { min-height: 0; }

/* Valid state — subtle green border */
.form-group.is-valid input[type="text"],
.form-group.is-valid input[type="email"],
.form-group.is-valid input[type="password"],
.form-group.is-valid .input-pfx-wrap input {
  border-color: rgba(34, 197, 94, 0.45);
}

/* Disabled / loading submit button */
.btn[disabled], .btn.btn-loading {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* Plan radio error ring */
.plan-group-error .plan-radio-group {
  border: 1px solid rgba(239, 68, 68, 0.5);
  border-radius: var(--r-sm);
  padding: 6px;
}

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

@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-content { max-width: none; margin: 0 auto; }
  .hero-sub { max-width: 520px; margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-meta { justify-content: center; }
  .hero-visual { justify-content: center; }
  .mockup-frame { transform: none; max-width: 480px; }
  .mockup-frame:hover { transform: none; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat { border-bottom: 1px solid var(--border); }
  .stat:nth-child(2n) { border-right: none; }
  .stat:nth-child(n+3) { border-bottom: none; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .pricing-grid { grid-template-columns: 1fr; background: transparent; border: none; gap: 16px; max-width: 400px; }
  .plan-card { border-radius: var(--r-xl) !important; border: 1px solid var(--border); overflow: hidden; }
  .plan-featured { margin: 0; padding: 36px 28px; }
  .auth-aside { display: none; }
  .auth-card { max-width: 100%; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .form-row { grid-template-columns: 1fr; }
  .auth-card { padding: 28px 20px; border-radius: var(--r-lg); }
  .hero { padding: 56px 0 40px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
}