/* ============================================================
   shared.css  –  ArchMasterAI design system
   Theme: Noir-tech – black bg, white type, crimson red accents
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,wght@0,300;0,400;0,500;1,300&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #0a0a0a;
  --bg-2:       #111111;
  --bg-3:       #181818;
  --bg-card:    #141414;
  --border:     #252525;
  --border-hl:  #333333;

  --red:        #e63946;
  --red-dark:   #b82c37;
  --red-glow:   rgba(230, 57, 70, 0.35);
  --red-subtle: rgba(230, 57, 70, 0.08);

  --white:      #ffffff;
  --grey-1:     #e8e8e8;
  --grey-2:     #a0a0a0;
  --grey-3:     #5a5a5a;

  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;

  --nav-h: 68px;
  --transition: 0.22s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.hidden { display: none !important; }
.mono { font-family: var(--font-mono); font-size: .85em; }

/* ── Navigation ───────────────────────────────────────────── */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(10,10,10,0.7);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.site-nav.scrolled { border-bottom-color: var(--border); background: rgba(10,10,10,0.95); }

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -.01em;
  flex-shrink: 0;
}
.logo-icon { color: var(--red); font-size: 1.3rem; }
.logo-accent { color: var(--red); }

.nav-links {
  display: flex;
  list-style: none;
  gap: .2rem;
  margin-left: auto;
}
.nav-links a {
  padding: .45rem .9rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 500;
  color: var(--grey-2);
  transition: color var(--transition), background var(--transition);
  letter-spacing: .01em;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--white);
  background: var(--bg-3);
}
.nav-links a.active { color: var(--red); }

.nav-auth { margin-left: 1rem; flex-shrink: 0; }

.btn-signin {
  background: var(--red);
  color: #fff;
  border: none;
  padding: .5rem 1.3rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  letter-spacing: .02em;
}
.btn-signin:hover {
  background: var(--red-dark);
  box-shadow: 0 0 20px var(--red-glow);
  transform: translateY(-1px);
}

/* User avatar + dropdown */
.user-menu-wrap { position: relative; }

.user-avatar {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--red);
  border: 2px solid var(--red);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .85rem;
  cursor: pointer;
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.user-avatar:hover { box-shadow: 0 0 16px var(--red-glow); transform: scale(1.05); }

.user-dropdown {
  position: absolute;
  top: calc(100% + .6rem);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-hl);
  border-radius: var(--radius-md);
  min-width: 200px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity var(--transition), transform var(--transition);
  box-shadow: 0 20px 60px rgba(0,0,0,.6);
}
.user-dropdown.open { opacity: 1; pointer-events: auto; transform: translateY(0); }

.dropdown-header {
  padding: .75rem 1rem;
  font-size: .8rem;
  font-weight: 600;
  color: var(--grey-3);
  text-transform: uppercase;
  letter-spacing: .08em;
  border-bottom: 1px solid var(--border);
}
.dropdown-item {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .7rem 1rem;
  font-size: .9rem;
  color: var(--grey-1);
  transition: background var(--transition), color var(--transition);
  cursor: pointer;
}
.dropdown-item:hover { background: var(--bg-3); color: var(--white); }
.dropdown-item.danger { color: var(--red); }
.dropdown-item.danger:hover { background: var(--red-subtle); }
.dropdown-divider { height: 1px; background: var(--border); margin: .3rem 0; }

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: .5rem;
  margin-left: .5rem;
}
.nav-hamburger span { display: block; width: 22px; height: 2px; background: var(--white); border-radius: 2px; transition: var(--transition); }

.nav-mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: .5rem 0;
}
.nav-mobile-menu.open { display: flex; }
.nav-mobile-menu a {
  padding: .85rem 2rem;
  font-size: 1rem;
  color: var(--grey-1);
  border-bottom: 1px solid var(--border);
  transition: color var(--transition), background var(--transition);
}
.nav-mobile-menu a:hover { color: var(--red); background: var(--bg-3); }

/* ── Buttons ──────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  background: var(--red);
  color: #fff;
  border: none;
  padding: .75rem 1.8rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: .95rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  letter-spacing: .02em;
  text-decoration: none;
}
.btn-primary:hover {
  background: var(--red-dark);
  box-shadow: 0 0 28px var(--red-glow);
  transform: translateY(-2px);
}
.btn-primary.full { width: 100%; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  background: transparent;
  color: var(--grey-1);
  border: 1px solid var(--border-hl);
  padding: .75rem 1.8rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: .95rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  letter-spacing: .02em;
}
.btn-secondary:hover {
  border-color: var(--grey-3);
  color: var(--white);
  background: var(--bg-3);
}
.btn-secondary.full { width: 100%; }

/* ── Auth Modal ───────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.8);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease;
}
.modal-overlay.open { opacity: 1; pointer-events: auto; }

.auth-modal {
  background: var(--bg-card);
  border: 1px solid var(--border-hl);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  width: 100%;
  max-width: 480px;
  max-height: 92vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 40px 120px rgba(0,0,0,.8), 0 0 60px rgba(230,57,70,.05);
  transform: translateY(20px);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
}
.modal-overlay.open .auth-modal { transform: translateY(0); }

.modal-close {
  position: absolute;
  top: 1.2rem; right: 1.2rem;
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--grey-2);
  width: 32px; height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: .85rem;
  display: flex; align-items: center; justify-content: center;
  transition: color var(--transition), border-color var(--transition);
}
.modal-close:hover { color: var(--white); border-color: var(--grey-3); }

.modal-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--grey-2);
  margin-bottom: 1.5rem;
  letter-spacing: -.01em;
}
.modal-logo span { color: var(--red); }

.modal-panel h2 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 700;
  margin-bottom: .3rem;
  letter-spacing: -.02em;
}
.modal-sub { color: var(--grey-2); font-size: .9rem; margin-bottom: 1.8rem; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.form-group { margin-bottom: 1.1rem; }
.form-group label {
  display: block;
  font-size: .8rem;
  font-weight: 500;
  color: var(--grey-2);
  margin-bottom: .4rem;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.form-group input {
  width: 100%;
  background: var(--bg-3);
  border: 1px solid var(--border-hl);
  border-radius: var(--radius-sm);
  padding: .7rem 1rem;
  color: var(--white);
  font-family: var(--font-body);
  font-size: .95rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input::placeholder { color: var(--grey-3); }
.form-group input:focus {
  border-color: var(--red);
  box-shadow: 0 0 0 3px var(--red-subtle);
}

.modal-error {
  min-height: 1.2rem;
  font-size: .85rem;
  color: var(--red);
  margin-bottom: .8rem;
}

.modal-switch {
  text-align: center;
  margin-top: 1.2rem;
  font-size: .9rem;
  color: var(--grey-2);
}
.modal-switch a { color: var(--red); font-weight: 500; }
.modal-switch a:hover { text-decoration: underline; }

.btn-loader { display: inline-block; animation: spin .6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Account / Subscription panels */
.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .85rem 0;
  border-bottom: 1px solid var(--border);
  font-size: .9rem;
  gap: 1rem;
}
.info-row:last-child { border-bottom: none; }
.info-row span { color: var(--grey-2); flex-shrink: 0; }
.info-row strong { text-align: right; word-break: break-all; }

.plan-badge {
  display: inline-block;
  border: 2px solid var(--red);
  color: var(--red);
  border-radius: var(--radius-sm);
  padding: .4rem 1.2rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: .04em;
  margin-bottom: 1.2rem;
}

.plan-features {
  list-style: none;
  margin-bottom: 1.2rem;
}
.plan-features li {
  padding: .5rem 0;
  font-size: .9rem;
  color: var(--grey-1);
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: .6rem;
}
.plan-features li::before { content: ''; }

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
  margin-top: 6rem;
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
  align-items: center;
}
.footer-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.footer-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-links a { color: var(--grey-2); font-size: .9rem; transition: color var(--transition); }
.footer-links a:hover { color: var(--red); }
.footer-copy { color: var(--grey-3); font-size: .8rem; }

/* ── Page wrapper ─────────────────────────────────────────── */
.page-wrap { padding-top: var(--nav-h); }

/* ── Utility ──────────────────────────────────────────────── */
.container { max-width: 1280px; margin: 0 auto; padding: 0 2rem; }
.tag {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: var(--red-subtle);
  border: 1px solid rgba(230,57,70,.25);
  color: var(--red);
  border-radius: 100px;
  padding: .25rem .85rem;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}