/**
 * Rapidev Labs - CSS Theme Variables
 * Centralized design tokens for dark/light theme support
 */

:root {
  /* ========================
     BRAND COLORS (Static)
  ======================== */
  --rapid-red: #E53935;
  --rapid-red-rgb: 229, 57, 53;
  --rapid-red-hover: #C62828;
  --charcoal-black: #1E1E1E;
  --charcoal-black-rgb: 30, 30, 30;
  --medium-grey: #B3B3B3;
  --medium-grey-rgb: 179, 179, 179;

  /* ========================
     DARK THEME (Default)
  ======================== */

  /* Backgrounds */
  --color-bg-primary: #000000;
  --color-bg-secondary: #0a0a0a;
  --color-bg-tertiary: #111111;
  --color-bg-elevated: rgba(255, 255, 255, 0.02);
  --color-bg-card: rgba(255, 255, 255, 0.03);
  --color-bg-hover: rgba(255, 255, 255, 0.05);

  /* Text */
  --color-text-primary: #ffffff;
  --color-text-secondary: #a3a3a3;
  --color-text-muted: #737373;
  --color-text-inverse: #000000;

  /* Borders */
  --color-border-primary: rgba(255, 255, 255, 0.05);
  --color-border-secondary: rgba(255, 255, 255, 0.1);
  --color-border-hover: rgba(255, 255, 255, 0.2);

  /* Interactive / Accent */
  --color-accent: var(--rapid-red);
  --color-accent-hover: var(--rapid-red-hover);
  --color-accent-muted: rgba(229, 57, 53, 0.1);

  /* Buttons */
  --color-btn-primary-bg: #ffffff;
  --color-btn-primary-text: #000000;
  --color-btn-primary-hover-bg: #f5f5f5;
  --color-btn-secondary-bg: transparent;
  --color-btn-secondary-text: #ffffff;
  --color-btn-secondary-border: rgba(255, 255, 255, 0.2);
  --color-btn-secondary-hover-bg: rgba(255, 255, 255, 0.05);

  /* Gradients */
  --gradient-premium-text: linear-gradient(180deg, #ffffff 0%, #a3a3a3 100%);
  --gradient-hero-bg: radial-gradient(circle at center, #111111 0%, #000000 100%);
  --gradient-accent: linear-gradient(135deg, var(--rapid-red) 0%, #FF5722 100%);

  /* Effects */
  --glass-bg: rgba(0, 0, 0, 0.9);
  --glass-border: rgba(255, 255, 255, 0.05);
  --glass-blur: blur(20px);
  --shadow-glow: 0 0 60px rgba(255, 255, 255, 0.15);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.5);
  --shadow-elevated: 0 8px 32px rgba(0, 0, 0, 0.6);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ========================
   LIGHT THEME
======================== */
[data-theme="light"] {
  /* Backgrounds */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f5f5f5;
  --color-bg-tertiary: #eeeeee;
  --color-bg-elevated: rgba(0, 0, 0, 0.02);
  --color-bg-card: #ffffff;
  --color-bg-hover: rgba(0, 0, 0, 0.04);

  /* Text */
  --color-text-primary: var(--charcoal-black);
  --color-text-secondary: #525252;
  --color-text-muted: var(--medium-grey);
  --color-text-inverse: #ffffff;

  /* Borders */
  --color-border-primary: rgba(0, 0, 0, 0.08);
  --color-border-secondary: rgba(0, 0, 0, 0.12);
  --color-border-hover: rgba(0, 0, 0, 0.2);

  /* Accent stays the same */
  --color-accent-muted: rgba(229, 57, 53, 0.08);

  /* Buttons */
  --color-btn-primary-bg: var(--charcoal-black);
  --color-btn-primary-text: #ffffff;
  --color-btn-primary-hover-bg: #2d2d2d;
  --color-btn-secondary-text: var(--charcoal-black);
  --color-btn-secondary-border: rgba(0, 0, 0, 0.2);
  --color-btn-secondary-hover-bg: rgba(0, 0, 0, 0.04);

  /* Gradients */
  --gradient-premium-text: linear-gradient(180deg, var(--charcoal-black) 0%, #525252 100%);
  --gradient-hero-bg: radial-gradient(circle at center, #f5f5f5 0%, #ffffff 100%);

  /* Effects */
  --glass-bg: rgba(255, 255, 255, 0.95);
  --glass-border: rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 60px rgba(0, 0, 0, 0.08);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-elevated: 0 8px 32px rgba(0, 0, 0, 0.12);
}

/* ========================
   THEME TOGGLE BUTTON
======================== */
.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border-secondary);
  border-radius: 50%;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: all var(--transition-normal);
}

.theme-toggle-btn:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
  border-color: var(--color-border-hover);
}

.theme-toggle-btn:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-normal);
}

.theme-toggle-btn:hover svg {
  transform: rotate(15deg);
}

/* Icon visibility based on theme */
[data-theme="dark"] .theme-toggle-btn .icon-moon,
:root:not([data-theme]) .theme-toggle-btn .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle-btn .icon-sun,
:root:not([data-theme]) .theme-toggle-btn .icon-sun {
  display: block;
}

[data-theme="light"] .theme-toggle-btn .icon-sun {
  display: none;
}

[data-theme="light"] .theme-toggle-btn .icon-moon {
  display: block;
}

/* ========================
   UTILITY CLASSES
======================== */

/* Backgrounds */
.bg-theme-primary { background-color: var(--color-bg-primary); }
.bg-theme-secondary { background-color: var(--color-bg-secondary); }
.bg-theme-tertiary { background-color: var(--color-bg-tertiary); }
.bg-theme-elevated { background-color: var(--color-bg-elevated); }
.bg-theme-card { background-color: var(--color-bg-card); }

/* Text */
.text-theme-primary { color: var(--color-text-primary); }
.text-theme-secondary { color: var(--color-text-secondary); }
.text-theme-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent); }

/* Borders */
.border-theme-primary { border-color: var(--color-border-primary); }
.border-theme-secondary { border-color: var(--color-border-secondary); }

/* Gradient text */
.text-premium-gradient {
  background: var(--gradient-premium-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Glass effect */
.glass-effect {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
}

/* Accent button */
.btn-accent {
  background-color: var(--color-accent);
  color: #ffffff;
  border: none;
  transition: background-color var(--transition-normal);
}

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