:root {
  --cream: #f5f0e8;
  --tan: #e8d5b7;
  --latte: #b8926a;
  --brown: #6b4226;
  --dark: #3e2723;
}

[data-theme="dark"] {
  --cream: #1a1210;
  --tan: #4e3b34;
  --latte: #8b6f4e;
  --brown: #c49a6c;
  --dark: #e8ddd0;
}

[data-theme="dark"] .signup input {
  background: var(--tan);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--cream);
  color: var(--dark);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Nav bar */
.site-header {
  border-bottom: 1px solid var(--tan);
}

.site-nav {
  max-width: 960px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: 'Playfair Display', serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--brown);
  text-decoration: none;
}

.nav-brand:hover {
  color: var(--dark);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--dark);
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.nav-links a:hover {
  opacity: 1;
}

/* Main */
main {
  flex: 1;
  padding: 2rem;
}

.page-enter main {
  animation: pageEnter 0.15s ease-out;
}

@keyframes pageEnter {
  from { opacity: 0; }
  to   { opacity: 1; }
}

main.page-exit {
  animation: none;
  opacity: 0;
  transition: opacity 0.12s ease-in;
}

/* Landing page centering */
.landing-main {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Hero */
.hero {
  text-align: center;
  max-width: 480px;
  animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Coffee cup */
.coffee-cup {
  margin-bottom: 1.5rem;
  position: relative;
  height: 4rem;
}

.cup-icon {
  font-size: 4rem;
  line-height: 1;
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  transition: opacity 0.4s ease;
}

.cup-icon.icon-light { opacity: 1; }
.cup-icon.icon-dark  { opacity: 0; }
[data-theme="dark"] .cup-icon.icon-light { opacity: 0; }
[data-theme="dark"] .cup-icon.icon-dark  { opacity: 1; }

/* Typography */
.brand {
  font-family: 'Playfair Display', serif;
  font-size: 2.75rem;
  color: var(--brown);
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

.tagline {
  font-size: 1.15rem;
  font-weight: 300;
  color: var(--latte);
  letter-spacing: 0.04em;
  margin-bottom: 1rem;
}

.bio {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--dark);
  opacity: 0.75;
  margin-bottom: 2rem;
  line-height: 1.5;
}

/* Email signup */
.signup {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  justify-content: center;
}

.signup input {
  font-family: inherit;
  font-size: 0.9rem;
  padding: 0.65rem 1rem;
  border: 2px solid var(--tan);
  border-radius: 8px;
  background: #fff;
  color: var(--dark);
  outline: none;
  width: 220px;
  transition: border-color 0.2s;
}

.signup input::placeholder {
  color: var(--latte);
}

.signup input:focus {
  border-color: var(--brown);
}

.signup button {
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.65rem 1.25rem;
  border: none;
  border-radius: 8px;
  background: var(--brown);
  color: var(--cream);
  cursor: pointer;
  transition: background-color 0.2s, transform 0.15s;
}

.signup button:hover {
  background: var(--dark);
  transform: translateY(-1px);
}

.signup button:active {
  transform: translateY(0);
}

/* Social links */
.socials {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
}

.socials a {
  color: var(--latte);
  transition: color 0.2s, transform 0.2s;
}

.socials a:hover {
  color: var(--brown);
  transform: translateY(-2px);
}

/* Footer */
footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.75rem;
  color: var(--latte);
}

/* Theme toggle */
.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--dark);
  opacity: 0.7;
  transition: opacity 0.2s;
  padding: 0.15rem;
  display: flex;
  align-items: center;
  position: relative;
  width: 18px;
  height: 18px;
}

.theme-toggle:hover {
  opacity: 1;
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: opacity 0.4s ease;
}

.theme-toggle .icon-sun  { opacity: 0; }
.theme-toggle .icon-moon { opacity: 1; }
[data-theme="dark"] .theme-toggle .icon-sun  { opacity: 1; }
[data-theme="dark"] .theme-toggle .icon-moon { opacity: 0; }

/* Theme transition — applied only while toggling to avoid always-on perf cost */
.theme-transitioning,
.theme-transitioning *,
.theme-transitioning *::before,
.theme-transitioning *::after {
  transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease, fill 0.4s ease !important;
}

/* Responsive */
@media (max-width: 520px) {
  .site-nav {
    padding: 0.75rem 1rem;
  }

  .nav-brand {
    font-size: 1.1rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .nav-links a {
    font-size: 0.85rem;
  }

  .brand {
    font-size: 2rem;
  }

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

  .signup input {
    width: 100%;
    max-width: 280px;
  }

  .signup button {
    width: 100%;
    max-width: 280px;
  }
}