/* ============================================================
   Growth Intelligence Dashboard — Base Styles
   CSS variables are defined here; dark.css / light.css override them.
   ============================================================ */

/* ── CSS Variables (defaults match dark theme) ── */
:root {
  --bg-primary:    #000000;
  --bg-secondary:  #0d0d0d;
  --bg-card:       #141414;
  --accent:        #a3c944;
  --accent-hover:  #8fb535;
  --text-primary:  #ffffff;
  --text-secondary:#969696;
  --border:        rgba(255, 255, 255, 0.08);
  --shadow:        0 4px 24px rgba(0, 0, 0, 0.4);
  --radius:        8px;
  --nav-height:    60px;
  --transition:    0.2s ease;
}

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

html, body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color var(--transition), color var(--transition);
}

a {
  color: var(--accent);
  text-decoration: none;
}

/* ── Utility ── */
.hidden { display: none !important; }

/* ── Login Screen ── */
#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background-color: var(--bg-primary);
}

.login-card {
  width: 100%;
  max-width: 400px;
  padding: 40px;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.login-logo {
  display: block;
  max-width: 160px;
  max-height: 60px;
  margin: 0 auto 32px;
  object-fit: contain;
}

.login-card h1 {
  font-size: 1.25rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: 28px;
  color: var(--text-primary);
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input {
  width: 100%;
  padding: 10px 14px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 0.9375rem;
  outline: none;
  transition: border-color var(--transition);
}

.form-group input:focus {
  border-color: var(--accent);
}

.form-group input::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

.btn-primary {
  width: 100%;
  padding: 11px;
  margin-top: 8px;
  background-color: var(--accent);
  color: #000000;
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color var(--transition), opacity var(--transition);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
}

.btn-primary:active {
  opacity: 0.85;
}

.login-error {
  margin-top: 12px;
  padding: 10px 14px;
  background-color: rgba(220, 53, 69, 0.12);
  border: 1px solid rgba(220, 53, 69, 0.35);
  border-radius: var(--radius);
  color: #ff6b7a;
  font-size: 0.875rem;
  text-align: center;
}

/* ── App Shell ── */
#app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Top Navigation ── */
#top-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 24px;
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}

.nav-logo img {
  height: 36px;
  max-width: 140px;
  object-fit: contain;
  display: block;
}

.nav-user {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
}

.nav-user-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.nav-user-role {
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.nav-controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1rem;
  transition: border-color var(--transition), color var(--transition), background-color var(--transition);
}

.btn-icon:hover {
  border-color: var(--accent);
  color: var(--accent);
  background-color: rgba(163, 201, 68, 0.08);
}

.btn-logout {
  padding: 7px 16px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}

.btn-logout:hover {
  border-color: #dc3545;
  color: #ff6b7a;
}

/* ── Main Content ── */
#app-content {
  flex: 1;
  padding: 32px 24px;
  background-color: var(--bg-primary);
}

/* ── Footer ── */
#app-footer {
  padding: 12px 24px;
  background-color: var(--bg-card);
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  #top-nav {
    padding: 0 16px;
    grid-template-columns: auto 1fr auto;
    gap: 8px;
  }

  .nav-user {
    align-items: flex-start;
  }

  .login-card {
    margin: 16px;
    padding: 28px 24px;
  }
}