@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

:root {
  --bg: #F3F4F6;
  --surface: #FFFFFF;
  --text-main: #111827;
  --text-muted: #6B7280;
  --border: #E5E7EB;
  --glow-1: #BFDBFE;
  --glow-2: #E0E7FF;
  --metric-bg: #F9FAFB;
  --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
  --glow-opacity: 0.6;
}

body.dark-theme {
  --bg: #0B0F19; /* very dark blue */
  --surface: #111827;
  --text-main: #F9FAFB;
  --text-muted: #9CA3AF;
  --border: #1F2937;
  --glow-1: #2563EB;
  --glow-2: #4F46E5;
  --metric-bg: #1F2937;
  --card-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --glow-opacity: 0.15;
}

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

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background-color: var(--bg);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow: hidden;
  transition: background-color 0.4s ease, color 0.4s ease;
}

/* Theme Toggle Button */
.theme-toggle {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.15rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  transition: color 0.2s ease, background-color 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  color: var(--text-main);
  background-color: var(--metric-bg);
}

/* Ambient Background Glows */
.ambient-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  z-index: -1;
  opacity: var(--glow-opacity);
  animation: float 12s infinite alternate ease-in-out;
  pointer-events: none;
  transition: background-color 0.4s ease, opacity 0.4s ease;
}

.glow-1 {
  width: 400px;
  height: 400px;
  background: var(--glow-1);
  top: -10%;
  left: 10%;
}

.glow-2 {
  width: 500px;
  height: 500px;
  background: var(--glow-2);
  bottom: -15%;
  right: 5%;
  animation-delay: -6s;
}

@keyframes float {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(40px, 60px) scale(1.1); }
}

/* Main Card */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 3.5rem;
  max-width: 540px;
  width: 100%;
  box-shadow: var(--card-shadow);
  animation: fadeUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  z-index: 10;
  transition: background-color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1.5rem;
}

.status .dot {
  width: 8px;
  height: 8px;
  background-color: #10B981;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
  animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
  70% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

h1 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

p {
  color: var(--text-muted);
  line-height: 1.65;
  font-size: 1rem;
  margin-bottom: 2rem;
}

/* System Metrics */
.metrics {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.metric {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--metric-bg);
  padding: 0.5rem 0.875rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  transition: background-color 0.4s ease, border-color 0.4s ease, color 0.4s ease;
}

.metric i {
  color: #10B981;
}

.divider {
  height: 1px;
  background-color: var(--border);
  margin: 0 0 2rem 0;
  transition: background-color 0.4s ease;
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.managed-by {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.managed-by a {
  text-decoration: none;
}

.managed-by strong {
  color: var(--text-main);
  font-weight: 600;
}

.managed-by a:hover strong {
  text-decoration: underline;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background-color: #2563EB; /* Premium blue */
  color: #FFFFFF;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 1rem 1.5rem;
  border-radius: 12px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.25);
}

.cta-button:hover {
  background-color: #1D4ED8;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
  color: #FFFFFF; /* Ensure it stays white in hover across modes */
}

.cta-button i {
  font-size: 1.1rem;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.link-item {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.875rem 1.25rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: all 0.2s ease;
  background-color: var(--surface);
}

.link-item:hover {
  border-color: var(--text-muted);
  background-color: var(--metric-bg);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.link-item i {
  color: var(--text-muted);
  font-size: 1.1rem;
}

.link-item.whatsapp i {
  color: #16A34A;
}

/* System Security Footer */
.system-footer {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.7rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.system-footer i {
  font-size: 0.8rem;
}