/* ============================================================
   QUANTANA — OPTIX  |  style.css
   Cold Steel + Emerald Green Design System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ── Design Tokens ──────────────────────────────────────────── */
:root {
  --bg:          #07090b;
  --surface:     #0c1518;
  --surface-2:   #111e22;
  --surface-3:   #162228;
  --border:      #1e3830;
  --border-dim:  #0f2119;
  --accent:      #00e676;
  --accent-dim:  #00b85a;
  --accent-glow: rgba(0, 230, 118, 0.18);
  --accent-glow-strong: rgba(0, 230, 118, 0.35);
  --steel:       #8aa8a0;
  --text:        #ccddd6;
  --text-muted:  #52766a;
  --text-dim:    #2f4a40;
  --danger:      #ff4560;
  --radius:      8px;
  --radius-lg:   14px;
  --transition:  0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* ── Top Bar / Brand ───────────────────────────────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 9, 11, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  height: 62px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.brand-logo {
  width: 32px;
  height: 32px;
  border: 1.5px solid var(--accent);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 10px var(--accent-glow);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: -1px;
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.04em;
}

.brand-name span {
  color: var(--accent);
}

/* ── Navigation ────────────────────────────────────────────── */
.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 1rem;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
  border: none;
  background: none;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-family: 'Inter', sans-serif;
}

.nav-link:hover {
  color: var(--text);
  background: var(--surface-2);
}

.nav-link.active {
  color: var(--accent);
  background: var(--accent-glow);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--accent);
}

.nav-link .icon { font-size: 1rem; }

/* Download CTA button in nav */
.nav-cta {
  margin-left: 0.75rem;
  padding: 0.45rem 1.2rem;
  background: var(--accent);
  color: #03120a !important;
  font-weight: 700 !important;
  border-radius: var(--radius);
  box-shadow: 0 0 16px var(--accent-glow-strong);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}

.nav-cta:hover {
  background: #00ff88 !important;
  box-shadow: 0 0 24px rgba(0, 230, 118, 0.5) !important;
  transform: translateY(-1px);
  color: #03120a !important;
}

/* ── Tab Sections ───────────────────────────────────────────── */
.tab-section {
  display: none;
  animation: fadeSlideIn 0.3s ease forwards;
}

.tab-section.active {
  display: block;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Hero ──────────────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
}

.hero-banner {
  width: 100%;
  height: 320px;
  object-fit: cover;
  object-position: center;
  display: block;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 60%, rgba(0,0,0,0) 100%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,1) 60%, rgba(0,0,0,0) 100%);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  background: linear-gradient(180deg,
    rgba(7,9,11,0.1) 0%,
    rgba(7,9,11,0.55) 60%,
    rgba(7,9,11,1) 100%
  );
}

.hero-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  opacity: 0.85;
}

.hero-title {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 0.5rem;
}

.hero-title .accent { color: var(--accent); text-shadow: 0 0 30px var(--accent); }

.hero-sub {
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--steel);
  max-width: 540px;
  margin-bottom: 1.8rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
  letter-spacing: 0.02em;
  font-family: 'Inter', sans-serif;
}

.btn-primary {
  background: var(--accent);
  color: #03120a;
  box-shadow: 0 0 20px var(--accent-glow-strong);
}
.btn-primary:hover {
  background: #00ff88;
  box-shadow: 0 0 32px rgba(0,230,118,0.55);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-2px);
}

/* ── Stats Bar ────────────────────────────────────────────── */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  margin-top: -1px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.25rem 2.5rem;
  border-right: 1px solid var(--border);
  flex: 1;
  min-width: 140px;
}
.stat-item:last-child { border-right: none; }

.stat-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--accent);
  text-shadow: 0 0 16px var(--accent-glow);
  line-height: 1;
}

.stat-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

/* ── Main Content Container ─────────────────────────────────── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Section Headings ────────────────────────────────────────── */
.section {
  padding: 5rem 0;
}

.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 0.6rem;
  opacity: 0.8;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.section-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 560px;
  margin-bottom: 3rem;
}

/* ── Cards ────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-dim);
  box-shadow: 0 8px 40px rgba(0,0,0,0.5), 0 0 20px var(--accent-glow);
}

.card-icon {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.4rem;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Grid Layouts ────────────────────────────────────────── */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.25rem;
}

/* ── USP Pillars ─────────────────────────────────────────── */
.pillars {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2.5rem;
}

.pillar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 0.5rem 1.1rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text);
  transition: border-color var(--transition), background var(--transition);
}

.pillar:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  color: var(--accent);
}

.pillar-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
  flex-shrink: 0;
}

/* ── Terminal Demo ───────────────────────────────────────── */
.terminal {
  background: #020608;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  line-height: 1.7;
  margin: 3rem 0;
  box-shadow: 0 0 60px rgba(0,0,0,0.8), 0 0 30px var(--accent-glow);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.term-dot {
  width: 11px; height: 11px;
  border-radius: 50%;
}
.term-dot.r { background: #ff5f57; }
.term-dot.y { background: #febc2e; }
.term-dot.g { background: #28c840; }

.terminal-title {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-left: 0.5rem;
}

.terminal-body {
  padding: 1.5rem 1.75rem;
}

.term-line { margin: 0.1rem 0; }

.term-prompt { color: var(--accent); }
.term-cmd    { color: #fff; }
.term-out    { color: var(--text-muted); }
.term-result { color: #58d6ff; }
.term-chain  { color: #ffd76a; }
.term-ok     { color: var(--accent); }

.cursor {
  display: inline-block;
  width: 9px; height: 1.1em;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: blink 1.1s step-end infinite;
  margin-left: 2px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ── Tools Accordion ─────────────────────────────────────── */
.tools-section { margin: 3rem 0; }

.tools-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.tool-category {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 0.75rem;
  transition: border-color var(--transition);
}

.tool-category:hover { border-color: var(--accent-dim); }

.tool-cat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: var(--surface);
  cursor: pointer;
  user-select: none;
  transition: background var(--transition);
}

.tool-cat-header:hover { background: var(--surface-2); }

.tool-cat-header.open { background: var(--surface-2); }

.tool-cat-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.tool-cat-icon { font-size: 1.2rem; }

.tool-cat-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: #fff;
}

.tool-cat-count {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0.15rem 0.65rem;
}

.tool-cat-chevron {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: transform var(--transition);
}
.tool-cat-header.open .tool-cat-chevron { transform: rotate(180deg); }

.tool-cat-body {
  display: none;
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border-top: 1px solid var(--border-dim);
}
.tool-cat-body.open { display: block; }

.tool-cat-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(175px, 1fr));
  gap: 0.5rem;
}

.tool-tag {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.7rem;
  background: var(--surface-3);
  border: 1px solid var(--border-dim);
  border-radius: 5px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.73rem;
  color: var(--text);
  transition: border-color var(--transition), color var(--transition);
}

.tool-tag:hover {
  border-color: var(--accent-dim);
  color: var(--accent);
}

.tool-tag-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.6;
  flex-shrink: 0;
}

/* ── Target Audience ─────────────────────────────────────── */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.audience-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  text-align: center;
  transition: all var(--transition);
}

.audience-card:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-3px);
  box-shadow: 0 0 20px var(--accent-glow);
}

.audience-icon { font-size: 2rem; margin-bottom: 0.6rem; }
.audience-name { font-size: 0.85rem; font-weight: 600; color: #fff; }
.audience-desc { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.25rem; }

/* ── Pricing / Download ──────────────────────────────────── */
.pricing-hero {
  text-align: center;
  padding: 5rem 2rem;
  position: relative;
}

.price-glow-ring {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  box-shadow: 0 0 40px var(--accent-glow), inset 0 0 40px var(--accent-glow);
  background: radial-gradient(circle, rgba(0,230,118,0.08) 0%, transparent 70%);
  margin: 0 auto 2rem;
  animation: pulsering 3s ease-in-out infinite;
}

@keyframes pulsering {
  0%, 100% { box-shadow: 0 0 30px var(--accent-glow), inset 0 0 30px var(--accent-glow); }
  50%       { box-shadow: 0 0 60px var(--accent-glow-strong), inset 0 0 50px var(--accent-glow-strong); }
}

.price-amount {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.price-once {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-top: 0.4rem;
}

.price-title {
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.price-sub {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 500px;
  margin: 0 auto 2.5rem;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  max-width: 460px;
  margin: 0 auto 2.5rem;
  text-align: left;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.9rem;
  color: var(--text);
}

.feature-check {
  color: var(--accent);
  font-size: 1rem;
  flex-shrink: 0;
}

.pricing-note {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 1.5rem;
}

/* ── Library ─────────────────────────────────────────────── */
.lib-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.lib-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition);
  cursor: pointer;
}

.lib-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-dim);
  box-shadow: 0 8px 40px rgba(0,0,0,0.5), 0 0 18px var(--accent-glow);
}

.lib-card-icon { font-size: 2rem; margin-bottom: 1rem; }
.lib-card-title { font-size: 1rem; font-weight: 600; color: #fff; margin-bottom: 0.4rem; }
.lib-card-count { font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; color: var(--accent); margin-bottom: 0.6rem; }
.lib-card-desc { font-size: 0.83rem; color: var(--text-muted); }
.lib-coming-soon {
  display: inline-block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  background: var(--surface-3);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.15rem 0.5rem;
  margin-top: 0.5rem;
}

/* ── Support FAQ ─────────────────────────────────────────── */
.faq { margin-top: 2rem; }

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 0.6rem;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  background: var(--surface);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  transition: background var(--transition);
  user-select: none;
}

.faq-question:hover { background: var(--surface-2); }
.faq-question.open { color: var(--accent); background: var(--surface-2); }

.faq-chevron {
  color: var(--text-muted);
  transition: transform var(--transition);
}
.faq-question.open .faq-chevron { transform: rotate(180deg); color: var(--accent); }

.faq-answer {
  display: none;
  padding: 1rem 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px solid var(--border-dim);
  background: var(--surface);
}
.faq-answer.open { display: block; }

.support-cta {
  background: linear-gradient(135deg, var(--surface-2), var(--surface-3));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  margin-top: 3rem;
}

.support-cta h3 { font-size: 1.2rem; color: #fff; margin-bottom: 0.4rem; }
.support-cta p { font-size: 0.87rem; color: var(--text-muted); margin-bottom: 1.25rem; }

/* ── Contact ─────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 700px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-info {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.contact-info h3 { font-size: 1.1rem; color: #fff; margin-bottom: 1.5rem; }

.contact-row {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  margin-bottom: 1.2rem;
}

.contact-row-icon { font-size: 1.1rem; flex-shrink: 0; padding-top: 0.1rem; }
.contact-row-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); }
.contact-row-value { font-size: 0.88rem; color: var(--text); margin-top: 0.15rem; }
.contact-row-value a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity var(--transition);
}
.contact-row-value a:hover { opacity: 0.75; }

.opensource-card {
  background: linear-gradient(135deg, rgba(0,230,118,0.06) 0%, var(--surface) 60%);
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: 0 0 30px var(--accent-glow);
}

.opensource-card h3 { font-size: 1.1rem; color: var(--accent); margin-bottom: 0.75rem; }
.opensource-card p { font-size: 0.87rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 1rem; }

/* ── Divider ─────────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ── Footer ──────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-brand { font-weight: 700; font-size: 0.9rem; color: var(--text-muted); }
.footer-brand span { color: var(--accent); }
.footer-note { font-size: 0.75rem; color: var(--text-dim); }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
  .topbar { padding: 0 1.25rem; }
  .nav { gap: 0; }
  .nav-link { padding: 0.45rem 0.65rem; font-size: 0.77rem; }
  .nav-link .icon { display: none; }
  .stat-item { padding: 1rem 1.25rem; }
  .hero-title { font-size: 2.2rem; }
  .section { padding: 3rem 0; }
}

@media (max-width: 500px) {
  .nav-cta { display: none; }
  .stats-bar { flex-direction: column; }
  .stat-item { border-right: none; border-bottom: 1px solid var(--border); }
}

/* ══════════════════════════════════════════════
   AUTH SYSTEM STYLES
══════════════════════════════════════════════ */

/* ── Session Indicator (topbar) ──────────────── */
.session-indicator {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: 1rem;
}

.session-email {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.73rem;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0.25rem 0.75rem;
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.session-logout {
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.25rem 0.65rem;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}
.session-logout:hover {
  color: var(--danger);
  border-color: var(--danger);
}

/* ── Auth Page Layout ─────────────────────────── */
.auth-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  background: var(--bg);
  position: relative;
  overflow-x: hidden;
}

.auth-bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(0,230,118,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,230,118,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.7) 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.7) 0%, transparent 75%);
}

.auth-page {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 480px;
  padding: 2.5rem 1.5rem 4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.purchase-page {
  max-width: 540px;
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  margin-bottom: 0.5rem;
}

/* ── Auth Card ───────────────────────────────── */
.auth-card {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: 0 0 60px rgba(0,0,0,0.6), 0 0 30px var(--accent-glow);
}

.auth-card-header {
  margin-bottom: 1.75rem;
}

.auth-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  opacity: 0.8;
  margin-bottom: 0.4rem;
}

.auth-title {
  font-size: 1.7rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 0.3rem;
}

.auth-sub {
  font-size: 0.84rem;
  color: var(--text-muted);
}

/* ── Form Fields ─────────────────────────────── */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.field-input {
  width: 100%;
  background: var(--surface-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.7rem 1rem;
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.field-input::placeholder { color: var(--text-dim); }

.field-input:focus {
  border-color: var(--accent-dim);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.field-hint {
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-top: 0.1rem;
}

/* ── Error and Success States ────────────────── */
.auth-error {
  background: rgba(255, 69, 96, 0.1);
  border: 1px solid rgba(255, 69, 96, 0.35);
  border-radius: var(--radius);
  padding: 0.65rem 1rem;
  font-size: 0.82rem;
  color: var(--danger);
  margin-bottom: 0.75rem;
}

.auth-success {
  background: var(--accent-glow);
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius);
  padding: 0.65rem 1rem;
  font-size: 0.82rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
  line-height: 1.5;
}

/* ── Auth Buttons ────────────────────────────── */
.auth-btn {
  width: 100%;
  justify-content: center;
  font-size: 0.9rem;
  padding: 0.8rem 1.5rem;
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-dim);
  font-size: 0.75rem;
}
.auth-divider::before, .auth-divider::after {
  content: '';
  flex: 1;
  border-top: 1px solid var(--border);
}

.auth-footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-dim);
}

.auth-link-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.83rem;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity var(--transition);
}
.auth-link-btn:hover { opacity: 0.7; }

.auth-back {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}
.auth-back:hover { color: var(--accent); }

/* ── Forgot / Re-download Panel ──────────────── */
.forgot-panel {
  display: none;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.forgot-header {
  margin-bottom: 1rem;
}

/* ── Security Key Display (modal) ────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeSlideIn 0.25s ease;
}

.modal-card {
  background: var(--surface);
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  max-width: 460px;
  width: 100%;
  text-align: center;
  box-shadow: 0 0 80px var(--accent-glow-strong), 0 0 30px rgba(0,0,0,0.8);
}

.modal-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.modal-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.4rem;
}
.modal-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.key-display-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: #020608;
  border: 1.5px solid var(--accent);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  box-shadow: 0 0 20px var(--accent-glow);
}

.key-display {
  flex: 1;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-align: left;
  word-break: break-all;
}

.key-copy-btn {
  background: var(--accent-glow);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}
.key-copy-btn:hover { background: rgba(0,230,118,0.25); border-color: var(--accent); }

.modal-warning {
  background: rgba(255,184,0,0.08);
  border: 1px solid rgba(255,184,0,0.3);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  font-size: 0.78rem;
  color: #ffd76a;
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.modal-details {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

/* ── Purchase Page Extras ────────────────────── */
.purchase-card {
  margin-top: 1rem;
}

.purchase-key-info {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  background: var(--accent-glow);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1.5rem;
}

.key-info-icon { font-size: 1.5rem; flex-shrink: 0; }

.purchase-features {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  background: var(--surface-3);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
}

.purchase-features .feature-item { font-size: 0.82rem; }

/* ── Robust Library Module Lists ───────────────────── */
.lib-module-list {
  list-style: none;
  margin: 1rem 0 0 0;
  padding: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 0.75rem;
}

.lib-module-list li {
  font-size: 0.78rem;
  color: var(--text-muted);
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.4rem;
}

.lib-module-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}

/* ── Competitor Comparison ─────────────────────────── */
.comparison-section {
  margin: 4rem 1rem;
  overflow-x: auto;
}

.comp-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  font-size: 0.9rem;
}

.comp-table th, .comp-table td {
  padding: 1.2rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.comp-table th {
  background: rgba(255, 255, 255, 0.03);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
}

.comp-table .feature-col {
  text-align: left;
  font-weight: 500;
  padding-left: 1.5rem;
  width: 25%;
}

.comp-table .optix-col {
  background: rgba(0, 230, 118, 0.05);
  border-left: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
  color: var(--accent);
  font-weight: bold;
}

.comp-table .optix-col.price {
  font-size: 1.1rem;
}

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

.comp-table tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.savings-badge {
  display: inline-block;
  background: var(--accent);
  color: #000;
  font-size: 0.7rem;
  font-weight: 900;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  margin-left: 0.5rem;
  vertical-align: middle;
  text-transform: uppercase;
}

/* ── Library Modal ─────────────────────────────────────────── */
.lib-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(7, 9, 11, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  animation: modalFadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.lib-modal-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 800px;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 0 60px rgba(0, 0, 0, 0.8), 0 0 30px var(--accent-glow);
  padding: 3rem;
}

.lib-modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color var(--transition);
}
.lib-modal-close:hover { color: var(--accent); }

.lib-modal-header {
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.5rem;
}

.lib-modal-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.lib-manual-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
}

.lib-manual-item {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: all var(--transition);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.lib-manual-item:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateX(5px);
}

.lib-manual-item span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.lib-manual-item h4 {
  font-size: 1rem;
  color: #fff;
}

.lib-manual-item p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.lib-card { cursor: pointer; }

@media (max-width: 768px) {
  .topbar { padding: 0 1rem; }
  .nav-link { padding: 0.45rem 0.6rem; font-size: 0.75rem; gap: 0.25rem; }
  .nav-link .icon { font-size: 0.85rem; }
  .nav-cta { margin-left: 0.4rem; padding: 0.4rem 0.8rem; font-size: 0.75rem; }
  
  .comp-table {
    font-size: 0.8rem;
    min-width: 600px;
  }
  .comp-table th, .comp-table td {
    padding: 0.75rem 0.5rem;
  }
  .comparison-section {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0 -1rem;
    padding: 0 1rem;
  }
  .lib-modal-content { padding: 2rem 1.5rem; }
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}