/* ===========================
   TAKAware Can — Site Styles
   =========================== */

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

:root {
  --color-bg:        #0a0e17;
  --color-surface:   #111827;
  --color-border:    #1f2937;
  --color-primary:   #3b82f6;
  --color-primary-h: #2563eb;
  --color-text:      #f1f5f9;
  --color-muted:     #94a3b8;
  --color-accent:    #10b981;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --radius: 12px;
  --max-w: 1100px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 16px;
}

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

/* ---- Layout ---- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Nav ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 24px;
}

.nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav__cta {
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--color-primary);
  color: #fff;
  padding: 8px 16px;
  border-radius: 8px;
  transition: background 0.2s;
}

.nav__cta:hover { background: var(--color-primary-h); text-decoration: none; }

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  transition: background 0.2s, transform 0.1s;
  cursor: pointer;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-primary-h);
  text-decoration: none;
  transform: translateY(-1px);
}

/* ---- Hero ---- */
.hero {
  padding: 100px 24px 80px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(59,130,246,0.15) 0%, transparent 70%);
}

.hero__inner { max-width: 700px; margin: 0 auto; }

.hero__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero__sub {
  font-size: 1.125rem;
  color: var(--color-muted);
  margin-bottom: 36px;
  line-height: 1.7;
}

/* ---- Features ---- */
.features {
  padding: 80px 0;
  border-top: 1px solid var(--color-border);
}

.section-title {
  text-align: center;
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.2s;
}

.feature-card:hover { border-color: var(--color-primary); }

.feature-card__icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ---- Open Source ---- */
.opensource {
  padding: 64px 24px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.opensource__inner {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.opensource h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.opensource p {
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.opensource a { color: var(--color-accent); }

/* ---- Page Hero (inner pages) ---- */
.page-hero {
  padding: 60px 24px 40px;
  border-bottom: 1px solid var(--color-border);
  background: radial-gradient(ellipse at 50% 0%, rgba(59,130,246,0.08) 0%, transparent 60%);
}

.page-hero h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.page-hero p { color: var(--color-muted); }

/* ---- Page Content / Prose ---- */
.page-content { padding: 60px 0 80px; }

.prose h2 {
  font-size: 1.375rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
  letter-spacing: -0.01em;
}

.prose h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
  color: var(--color-text);
}

.prose p { color: var(--color-muted); margin-bottom: 1rem; line-height: 1.75; }

.prose ul, .prose ol {
  color: var(--color-muted);
  padding-left: 1.5rem;
  margin-bottom: 1rem;
  line-height: 1.75;
}

.prose li { margin-bottom: 0.4rem; }

.prose code {
  background: var(--color-border);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.875em;
  color: var(--color-accent);
}

.prose a { color: var(--color-primary); }

/* ---- Footer ---- */
.footer {
  padding: 40px 24px;
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.footer__links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer__links a {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.footer__links a:hover { color: var(--color-text); text-decoration: none; }

.footer__copy {
  color: var(--color-muted);
  font-size: 0.8125rem;
  line-height: 1.6;
}

/* ---- Contact Form ---- */
.contact-form {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 600px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  padding: 10px 14px;
  transition: border-color 0.2s;
  width: 100%;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  outline: none;
}

.form-group select option { background: var(--color-surface); }

.form-group textarea { resize: vertical; }

.contact-form .btn { align-self: flex-start; }

/* ---- 404 ---- */
.not-found {
  min-height: calc(100vh - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 24px;
}

.not-found__inner { max-width: 480px; }

.not-found__code {
  font-size: 7rem;
  font-weight: 800;
  line-height: 1;
  color: var(--color-primary);
  opacity: 0.4;
  letter-spacing: -0.05em;
  margin-bottom: 16px;
}

.not-found__title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.not-found__sub {
  color: var(--color-muted);
  margin-bottom: 32px;
}

/* ---- Responsive ---- */
@media (max-width: 600px) {
  .hero { padding: 64px 16px 48px; }
  .features__grid { grid-template-columns: 1fr; }
  .nav__logo { font-size: 1rem; }
}