/* ===== LordMOS — Minimal Theme ===== */

/* ===== Variables ===== */
:root {
  /* Typography */
  --font-display: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --text-xs: 0.75rem;    /* 12px — tags, badges */
  --text-sm: 0.875rem;   /* 14px — meta, descriptions, nav, buttons */
  --text-base: 1rem;     /* 16px — body text */
  --text-lg: 1.125rem;   /* 18px — card names */
  --text-xl: 1.3rem;     /* ~21px — featured titles */

  /* Colors */
  --fg: #0a0a0a;
  --fg-2: #525252;
  --fg-3: #a3a3a3;
  --bg: #ffffff;
  --bg-2: #fafafa;
  --border: #e5e5e5;
  --border-hover: #a3a3a3;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --transition: all 0.18s ease;
  --container: 900px;
  --accent-green: #16a34a;
  --accent-green-bg: #f0fdf4;
  --accent-green-border: #bbf7d0;
  --code-bg: #1a1a2e;
  --code-fg: #e0e0e0;
  --code-border: rgba(255, 255, 255, 0.06);
  --nav-bg: rgba(255, 255, 255, 0.85);
  --nav-scroll-border: #e5e5e5;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #f0f0f0;
    --fg-2: #a3a3a3;
    --fg-3: #6b6b6b;
    --bg: #0a0a0a;
    --bg-2: #171717;
    --border: #2a2a2a;
    --border-hover: #555;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --accent-green: #4ade80;
    --accent-green-bg: #052e16;
    --accent-green-border: #166534;
    --code-bg: #111827;
    --code-fg: #e5e7eb;
    --code-border: rgba(255, 255, 255, 0.08);
    --nav-bg: rgba(10, 10, 10, 0.85);
    --nav-scroll-border: #2a2a2a;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

/* ===== Navbar ===== */
#mainNav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0;
  transition: var(--transition);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  letter-spacing: -0.3px;
  color: var(--fg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-links a {
  font-size: var(--text-sm);
  color: var(--fg-2);
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-links a:hover {
  background: var(--bg-2);
  color: var(--fg);
}

/* ===== Hero ===== */
.hero {
  max-width: var(--container);
  margin: 0 auto;
  padding: 9rem 1.5rem 5rem;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -2px;
  line-height: 1.05;
  color: var(--fg);
  margin-bottom: 1.25rem;
}

.hero-bio {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--fg-2);
  font-weight: 400;
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.25rem;
}

.hero-pill {
  font-size: var(--text-xs);
  color: var(--fg-2);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 0.3rem 0.85rem;
  transition: var(--transition);
}

.hero-pill:hover {
  border-color: var(--fg);
  color: var(--fg);
}

.hero-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--fg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.45rem 1rem;
  transition: var(--transition);
}

.hero-link:hover {
  border-color: var(--fg);
  color: var(--fg);
}

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

/* ===== Sections ===== */
.page-section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.section-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 1.75rem;
}

/* ===== Mini Program (featured card) ===== */
.mp-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  gap: 2rem;
  align-items: center;
  transition: var(--transition);
  background: var(--bg);
}

.mp-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.mp-qr {
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-2);
}

.mp-qr img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.mp-body {
}

.mp-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent-green);
  background: var(--accent-green-bg);
  border: 1px solid var(--accent-green-border);
  border-radius: 50px;
  padding: 0.2rem 0.7rem;
  margin-bottom: 0.75rem;
}

.mp-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--fg);
  margin-bottom: 0.5rem;
}

.mp-desc {
  font-size: var(--text-sm);
  color: var(--fg-2);
  line-height: 1.7;
}

/* ===== Agent Cards ===== */
.agent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.agent-card {
  text-decoration: none; /* no underline when it's an <a> */
  color: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  background: var(--bg);
}

.agent-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.agent-logo {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 1.25rem;
  border: 1px solid var(--border);
}

.agent-logo img {
  width: 100%;
  height: 100%;
}

.agent-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.25rem;
}

.agent-sub {
  font-size: var(--text-xs);
  color: var(--fg-3);
  margin-bottom: 0.75rem;
}

.agent-desc {
  font-size: var(--text-sm);
  color: var(--fg-2);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 1.25rem;
}

.agent-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1.25rem;
}

.agent-tag {
  font-size: var(--text-xs);
  color: var(--fg-3);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.15rem 0.5rem;
}

.btn-gh {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--fg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.9rem;
  transition: var(--transition);
  width: fit-content;
}

.btn-gh:hover {
  border-color: var(--fg);
  color: var(--fg);
}

/* ===== iOS App Grid ===== */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.app-card {
  text-decoration: none;   /* no underline when it's an <a> */
  color: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  background: var(--bg);
}

.app-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.app-icon {
  width: 56px;
  height: 56px;
  border-radius: 13px;
  margin-bottom: 1rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.app-name {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.15rem;
}

.app-sub {
  font-size: var(--text-xs);
  color: var(--fg-3);
  margin-bottom: 0.6rem;
  font-style: italic;
}

.app-desc {
  font-size: var(--text-sm);
  color: var(--fg-2);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 1.1rem;
}

.btn-store {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--bg);
  background: var(--fg);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.85rem;
  transition: var(--transition);
  width: fit-content;
}

.btn-store:hover {
  background: var(--fg-2);
  color: var(--bg);
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  font-size: var(--text-sm);
  color: var(--fg-3);
}

.footer-nav {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  padding: 0;
}

.footer-nav a {
  font-size: var(--text-sm);
  color: var(--fg-3);
  transition: var(--transition);
}

.footer-nav a:hover {
  color: var(--fg);
}

/* ===== Skip Navigation ===== */
.skip-nav {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 200;
  background: var(--fg);
  color: var(--bg);
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: top 0.2s ease;
}

.skip-nav:focus {
  top: 0.75rem;
}

/* ===== Focus Styles ===== */
:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ===== Mobile Nav Toggle ===== */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.55rem;
  cursor: pointer;
  color: var(--fg);
  font-size: var(--text-lg);
  line-height: 1;
  transition: var(--transition);
}

.nav-toggle:hover {
  border-color: var(--fg);
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .hero {
    padding: 7rem 1.25rem 3.5rem;
  }
  .page-section {
    padding: 3rem 1.25rem;
  }
  .mp-card {
    flex-direction: column;
    gap: 1.5rem;
  }
  .mp-qr {
    width: 100px;
    height: 100px;
  }
  .app-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .nav-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--nav-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 1.5rem 1rem;
    gap: 0;
  }
  .nav-links.nav-open {
    display: flex;
  }
  .nav-links li {
    width: 100%;
  }
  .nav-links a {
    display: block;
    padding: 0.75rem 0.5rem;
    font-size: var(--text-base);
    border-bottom: 1px solid var(--border);
    border-radius: 0;
  }
  .nav-links li:last-child a {
    border-bottom: none;
  }
}