/* ============================================
   Ace Flight Center - CSS Custom Properties
   ============================================ */

:root {
    /* Primary Colors */
    --color-navy: #001C42;
    --color-navy-dark: #00112a;
    --color-navy-light: #002d6b;
    --color-red: #DA0013;
    --color-red-dark: #b8000f;
    --color-red-light: #ff1a2e;
    --color-white: #FFFFFF;
    --color-off-white: #F6F6F6;
    --color-light-gray: #F0F0F0;
    --color-gray: #888888;
    --color-dark-gray: #333333;

    /* Gradients */
    --gradient-navy: linear-gradient(135deg, #001C42 0%, #002d6b 100%);
    --gradient-red: linear-gradient(135deg, #DA0013 0%, #ff1a2e 100%);
    --gradient-hero-overlay: linear-gradient(90deg, rgba(0,28,66,0.85) 0%, rgba(0,28,66,0.4) 60%, transparent 100%);
    --gradient-dark-overlay: linear-gradient(180deg, rgba(0,28,66,0.95) 0%, rgba(0,28,66,0.85) 100%);

    /* Typography */
    --font-primary: 'Montserrat', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --text-hero: 4.5rem;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-full: 50%;
    --radius-pill: 50px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 28, 66, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 28, 66, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 28, 66, 0.16);
    --shadow-xl: 0 16px 48px rgba(0, 28, 66, 0.2);
    --shadow-card: 0 4px 20px rgba(0, 28, 66, 0.1);
    --shadow-card-hover: 0 8px 40px rgba(0, 28, 66, 0.18);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-smooth: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);

    /* Layout */
    --max-width: 1400px;
    --header-height: 90px;
    --header-height-scrolled: 70px;

    /* Z-index Scale */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 500;
    --z-overlay: 900;
    --z-modal: 1000;
    --z-toast: 1100;
}