/* =========================================================
   ToolAgora — design tokens
   Themes: "Mint Minimal" (light) / "Midnight Agora" (dark)
   ========================================================= */

:root {
  --radius: 14px;
  --radius-sm: 10px;
  --header-h: 72px;
  --container-max: 1180px;
  --container-pad: 6vw;

  --font-heading: 'Fraunces', serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --transition-theme: background-color .25s ease, border-color .25s ease, color .25s ease;
}

:root,
[data-theme="light"] {
  --bg: #F2F3F4;
  --card: #FFFFFF;
  --line: #DBDEE1;
  --ink: #2A2E35;
  --ink-soft: #7A8580;
  --accent1: #2F9E82;
  --accent1-deep: #1F7D66;
  --accent2: #2A2E35;
  --accent2-deep: #14161A;
  --dot-color: rgba(42, 46, 53, 0.16);
  --error: #C0392B;
  --shadow-card: 0 1px 2px rgba(30, 40, 35, 0.05), 0 10px 24px -14px rgba(30, 40, 35, 0.18);
  --shadow-card-hover: 0 4px 10px rgba(30, 40, 35, 0.07), 0 16px 32px -14px rgba(30, 40, 35, 0.22);
}

[data-theme="dark"] {
  --bg: #1B1F2A;
  --card: #242938;
  --line: #333A4A;
  --ink: #EDE6D6;
  --ink-soft: #9BA0B0;
  --accent1: #E0A84D;
  --accent1-deep: #C68A2E;
  --accent2: #4FC3B5;
  --accent2-deep: #2F9E8E;
  --dot-color: rgba(237, 230, 214, 0.07);
  --error: #E57373;
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.2), 0 10px 24px -14px rgba(0, 0, 0, 0.45);
  --shadow-card-hover: 0 4px 10px rgba(0, 0, 0, 0.25), 0 16px 32px -14px rgba(0, 0, 0, 0.5);
}

/* =========================================================
   Reset & base
   ========================================================= */

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

html {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  background-image: radial-gradient(circle at 1px 1px, var(--dot-color) 1px, transparent 0);
  background-size: 22px 22px;
  transition: var(--transition-theme);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

main {
  min-height: calc(100vh - var(--header-h));
}

/* =========================================================
   Header / nav
   ========================================================= */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-h);
  padding-inline: var(--container-pad);
  background-color: var(--bg);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
  transition: var(--transition-theme);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.wordmark img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
}

.site-nav a:hover {
  color: var(--accent1-deep);
}

.site-nav a.active {
  color: var(--accent1-deep);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--card);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 16px;
  height: 2px;
  margin-inline: auto;
  background-color: var(--ink);
  border-radius: 1px;
  transition: transform .2s ease, opacity .2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* =========================================================
   Theme toggle
   ========================================================= */

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px;
  transition: var(--transition-theme);
}

.theme-toggle button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: none;
  background: transparent;
  padding: 6px 12px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
}

.theme-toggle button[aria-pressed="true"] {
  background-color: var(--accent1);
  color: var(--card);
}

/* =========================================================
   Buttons & cards (shared primitives)
   ========================================================= */

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  background-color: var(--ink);
  color: var(--bg);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease;
}

.btn-primary:hover {
  background-color: var(--accent1-deep);
  color: #fff;
}

.card {
  background-color: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: var(--transition-theme), box-shadow .15s ease, transform .15s ease;
}

/* =========================================================
   Footer
   ========================================================= */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 30px var(--container-pad);
  transition: var(--transition-theme);
}

.site-footer .footer-inner {
  max-width: var(--container-max);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-copy,
.footer-links a {
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.footer-links a:hover {
  color: var(--accent1-deep);
}

.ad-slot {
  margin-top: 20px;
  text-align: center;
}

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 640px) {
  .site-header {
    padding-inline: 5vw;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 12px 5vw 18px;
    background-color: var(--card);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 24px -12px rgba(0, 0, 0, 0.35);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    width: 100%;
    padding: 10px 0;
  }

  .theme-toggle {
    margin-top: 6px;
  }
}