/* ==========================================================================
   Mohtaway Design System — Design Tokens (Thmanyah-inspired)
   ========================================================================== */

:root {
    /* ── Brand ── */
    --color-primary: #169196;
    --color-primary-hover: #127a7e;
    --color-primary-light: rgba(22, 145, 150, 0.10);
    --color-accent: #f0a500;

    /* ── Background (warm beige like Thmanyah) ── */
    --color-bg: hsl(180, 100%, 99%);
    --color-bg-alt: #F0EFE9;
    --color-bg-card: #FFFFFF;
    --color-bg-dark: #1a1a1a;
    --color-bg-dark-lighter: #2a2a2a;
    --color-overlay: rgba(0, 0, 0, 0.55);

    /* ── Text ── */
    --color-text: #1a1a1a;
    --color-text-secondary: #555555;
    --color-text-light: #888888;
    --color-text-white: #ffffff;
    --color-text-on-dark: rgba(255, 255, 255, 0.75);

    /* ── Borders ── */
    --color-border: #D8D6CE;
    --color-border-light: #E8E6E0;

    /* ── Typography ── */
    --font-primary: 'IBM Plex Sans Arabic', system-ui, sans-serif;
    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-md: 1.0625rem;
    --fs-lg: 1.125rem;
    --fs-xl: 1.25rem;
    --fs-2xl: 1.5rem;
    --fs-3xl: 1.875rem;
    --fs-4xl: 2.25rem;
    --fs-5xl: 3rem;
    --fw-regular: 400;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fw-bold: 700;
    --lh-tight: 1.25;
    --lh-normal: 1.55;
    --lh-relaxed: 1.8;

    /* ── Spacing ── */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 0.875rem;
    --space-lg: 1.25rem;
    --space-xl: 1.75rem;
    --space-2xl: 2.5rem;
    --space-3xl: 3.5rem;
    --space-4xl: 5rem;

    /* ── Layout ── */
    --container-max: 1240px;
    /* used by .container */
    --container-width: 1240px;
    --container-narrow: 720px;
    --container-padding: 1.25rem;
    --header-height: 64px;

    /* ── Border Radius ── */
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;

    /* ── Shadows ── */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.13);
    --shadow-header: 0 1px 0 var(--color-border);

    /* ── Card dimensions ── */
    --card-spine-img: 96px;

    /* ── Transitions ── */
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-header {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(53px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    transition: transform var(--transition), box-shadow var(--transition);
    will-change: transform;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
}