/* --- Custom CSS Variables & Tokens --- */
:root {
  /* Design System Colors */
  --bg-color-light: #f9fafb;
  --bg-color-dark: #030712;
  
  --primary-color: #3b82f6; /* Modern Blue */
  --accent-color: #6366f1; /* Modern Indigo */
  
  --glass-bg-light: rgba(255, 255, 255, 0.45);
  --glass-bg-dark: rgba(17, 24, 39, 0.45);
  
  --glass-border-light: rgba(31, 41, 55, 0.08);
  --glass-border-dark: rgba(255, 255, 255, 0.06);

  /* Fallback definitions for standard browser compatibility */
  --bg-color: var(--bg-color-dark);
  --glass-bg: var(--glass-bg-dark);
  --glass-border: var(--glass-border-dark);
  --card-shadow: 0 16px 40px 0 rgba(0, 0, 0, 0.4);
}

/* Light theme overrides */
[data-theme="light"] {
  --bg-color: var(--bg-color-light);
  --glass-bg: var(--glass-bg-light);
  --glass-border: var(--glass-border-light);
  --card-shadow: 0 16px 40px 0 rgba(31, 41, 55, 0.08);
}

:root {
  color-scheme: light dark;
}

/* --- Base Resets & Global Styles --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-color);
  font-family: 'Outfit', sans-serif;
  transition: background-color 0.4s ease;
}

/* --- Dynamic Mesh Background --- */
.mesh-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: -2;
  pointer-events: none;
}

.mesh-glow-1, .mesh-glow-2 {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.18;
  transition: transform 0.1s ease-out;
}

.mesh-glow-1 {
  top: -15%;
  right: 10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--primary-color) 0%, transparent 80%);
}

.mesh-glow-2 {
  bottom: -15%;
  left: 10%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--accent-color) 0%, transparent 80%);
}

[data-theme="light"] .mesh-glow-1, [data-theme="light"] .mesh-glow-2 {
  opacity: 0.08;
}

/* --- Centered Screen Layout --- */
.logo-screen {
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

/* --- Interactive Glowing Logo Card --- */
.logo-interaction-container {
  position: relative;
  width: 90%;
  max-width: 580px;
  padding: 60px 40px;
  cursor: grab;
  perspective: 1000px;
}

.logo-card-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 28px;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  filter: blur(28px);
  opacity: 0.22;
  z-index: -1;
  transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.logo-card {
  position: relative;
  width: 100%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 24px;
  padding: 60px 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--card-shadow);
  transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
  transform-style: preserve-3d;
}

.hero-logo {
  max-width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.25));
  transform: translateZ(60px);
  transition: transform 0.3s ease;
  user-select: none;
  pointer-events: none;
}

/* Specific styling adjustments for logo image contrast in dark vs light mode */
[data-theme="light"] .hero-logo {
  filter: drop-shadow(0 6px 12px rgba(31, 41, 55, 0.08));
}