/* ==========================================================================
   One7Tools — Components Stylesheet
   Navbar, Cards, Vision Ecosystem, Contact, Footer, Policy Layouts
   ========================================================================== */

/* ==========================================================================
   1. Floating / Sticky Navbar
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  transition: background-color var(--duration-normal) var(--ease-smooth),
              backdrop-filter var(--duration-normal) var(--ease-smooth),
              border-color var(--duration-normal) var(--ease-smooth),
              box-shadow var(--duration-normal) var(--ease-smooth);
  border-bottom: 1px solid transparent;
  background-color: transparent;
}

.site-header.scrolled {
  background-color: rgba(8, 8, 8, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4), 0 0 1px rgba(255, 255, 255, 0.05);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Brand Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  text-decoration: none;
}

.brand-logo-mark {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: #111114;
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 12px var(--accent-glow);
}

.brand-logo-mark svg {
  width: 16px;
  height: 16px;
}

.brand-logo-text {
  display: flex;
  align-items: baseline;
}

.brand-logo-accent {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
  margin: 0 1px;
}

/* Navigation Links */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 450;
  color: var(--text-secondary);
  transition: color var(--duration-fast) ease;
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--accent-gradient);
  transition: width var(--duration-normal) var(--ease-out-quint);
}

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

.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Mobile Toggle */
.mobile-menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
}

.mobile-menu-btn svg {
  width: 20px;
  height: 20px;
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: rgba(8, 8, 8, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transform: translateY(-120%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.35s var(--ease-smooth), opacity 0.3s ease;
  z-index: 99;
}

.mobile-drawer.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-link {
  font-size: 1.125rem;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.mobile-nav-link:hover {
  color: var(--text-primary);
}

/* ==========================================================================
   2. Core Cards (Simple, Fast, Useful)
   ========================================================================== */
.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
  z-index: 2;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: transform var(--duration-normal) var(--ease-out-quint),
              border-color var(--duration-normal) var(--ease-out-quint),
              box-shadow var(--duration-normal) var(--ease-out-quint),
              background var(--duration-normal) var(--ease-out-quint);
  will-change: transform, box-shadow;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.12), transparent);
  pointer-events: none;
}

.feature-card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5), 0 0 24px var(--accent-glow);
}

/* Subtle corner accent indicator */
.card-corner-glow {
  position: absolute;
  top: -40px;
  right: -40px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--duration-normal) ease;
  pointer-events: none;
}

.feature-card:hover .card-corner-glow {
  opacity: 1;
}

/* Card Icon Container */
.card-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--text-primary);
  transition: transform var(--duration-normal) var(--ease-out-quint),
              border-color var(--duration-normal) ease,
              background var(--duration-normal) ease;
}

.card-icon-wrapper svg {
  width: 24px;
  height: 24px;
  stroke: var(--text-primary);
}

.feature-card:hover .card-icon-wrapper {
  transform: scale(1.06) translateY(-2px);
  border-color: var(--border-accent);
  background: rgba(99, 102, 241, 0.08);
}

.feature-card:hover .card-icon-wrapper svg {
  stroke: #A78BFA;
}

/* Card Typography */
.card-title {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.card-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.card-feature-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.card-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.card-feature-item svg {
  width: 14px;
  height: 14px;
  color: var(--accent-blue);
  flex-shrink: 0;
}

/* ==========================================================================
   3. Future Vision Section ("More tools. More possibilities.")
   ========================================================================== */
.vision-section {
  background-color: var(--bg-surface);
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.vision-container {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: center;
  gap: 56px;
}

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

.vision-interactive-canvas-wrap {
  position: relative;
  width: 100%;
  height: 440px;
  background: #080808;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: inset 0 0 60px rgba(0, 0, 0, 0.8), 0 12px 36px rgba(0, 0, 0, 0.4);
}

#ecosystem-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.ecosystem-overlay-badge {
  position: absolute;
  bottom: 20px;
  right: 20px;
  padding: 6px 14px;
  background: rgba(16, 16, 16, 0.85);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  backdrop-filter: blur(8px);
  pointer-events: none;
}

/* ==========================================================================
   4. Philosophy / About Section
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  align-items: center;
}

.about-narrative {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.about-narrative p {
  margin-bottom: 20px;
}

.about-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
}

.metric-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  margin-bottom: 6px;
}

.metric-label {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ==========================================================================
   5. Contact Section
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-detail-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: border-color var(--duration-normal) ease;
}

.contact-detail-card:hover {
  border-color: var(--border-medium);
}

.contact-detail-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue);
  flex-shrink: 0;
}

.contact-detail-icon svg {
  width: 20px;
  height: 20px;
}

.contact-detail-label {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-detail-val {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
}

.contact-form-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-input, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: #09090C;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  transition: border-color var(--duration-fast) ease, box-shadow var(--duration-fast) ease;
  outline: none;
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-feedback {
  margin-top: 14px;
  font-size: 0.875rem;
  display: none;
}

.form-feedback.success {
  display: block;
  color: #10B981;
}

/* ==========================================================================
   6. Footer
   ========================================================================== */
.site-footer {
  background-color: #030303;
  position: relative;
  padding: 80px 0 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  overflow: hidden;
  z-index: 2;
}

.footer-ambient-glow {
  position: absolute;
  top: 0;
  left: 50%;
  width: 800px;
  height: 200px;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at top, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}

.footer-brand-col {
  max-width: 320px;
}

.footer-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 16px;
  margin-bottom: 24px;
}

.footer-col-title {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast) ease;
}

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

.footer-contact-item {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

/* ==========================================================================
   7. Policy Pages Layout & Typography
   ========================================================================== */
.policy-page {
  padding-top: 140px;
  padding-bottom: 100px;
  background-color: var(--bg-void);
  min-height: 100vh;
}

.policy-header {
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-subtle);
}

.policy-badge {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 16px;
}

.policy-title {
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.policy-date {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.policy-content {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.policy-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 40px;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.policy-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 28px;
  margin-bottom: 12px;
}

.policy-content p {
  margin-bottom: 20px;
}

.policy-content ul, .policy-content ol {
  margin-bottom: 24px;
  padding-left: 20px;
}

.policy-content li {
  list-style: disc;
  margin-bottom: 8px;
}

.policy-content a {
  color: var(--accent-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.policy-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 28px 0;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 1024px) {
  .card-grid-3 {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .vision-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .nav-menu, .nav-actions {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}