/**
 * IROTA brand and design-system tokens.
 *
 * Brand colours and identity facts are copied from
 * planning/data/project-memory.json. Do not invent name, logo, palette,
 * address, phone or email. Structural type/space/radius/shadow scales are
 * design-system primitives (not brand facts) and are documented in
 * planning/runtime/phase-c/docs/brand-token-inventory.md.
 *
 * Divar, Ticket and Conference presentation seams MUST consume these
 * custom properties through the Ahura/Doctor 2 child/bridge. Module
 * themes and vendor demo palettes are forbidden.
 */

:root {
	/* Brand colours — planning/data/project-memory.json brand.colors */
	--irota-color-green: #00530F; /* brand.colors.irota_green */
	--irota-color-teal: #006070; /* brand.colors.logo_teal */
	--irota-color-teal-light: #108080; /* brand.colors.logo_teal_light */
	--irota-color-gold: #D0B060; /* brand.colors.logo_gold */
	--irota-color-surface: #FFFFFF; /* brand.colors.surface */
	--irota-color-text: #303030; /* brand.colors.text */
	--irota-color-muted: #5D5D5D; /* brand.colors.muted */
	--irota-color-sky: #58B6E6; /* brand.colors.sky */

	/* Derived product surfaces and semantic colours. These are interface
	 * primitives, not additions to the association's identity palette. */
	--irota-color-canvas: #FCFBF7;
	--irota-color-surface-warm: #F7F6F0;
	--irota-color-surface-tint: #F0F6F2;
	/* Measured from the selected option-1 reference hero (#072C1F–#073122).
	 * This is a derived presentation surface, not a replacement brand colour. */
	--irota-color-emerald: #073122;
	--irota-color-border: #D8E2DA;
	--irota-color-border-strong: #B7C9BA;
	--irota-color-text-strong: #173526;
	--irota-color-text-soft: #56645C;
	--irota-color-success: var(--irota-color-green);
	--irota-color-warning: #A65F00;
	--irota-color-error: #B42318;
	--irota-color-info: #175CD3;

	/* Typography scale — design-system primitive; Persian UI font stack.
	 * IRANSansX is a licensed subset admitted from the owned Ahura source
	 * (see assets/fonts/FONT-ADMISSION.md). B Yekan is superseded. */
	--irota-font-family: "IRANSansX", "IRANSans", Tahoma, "Segoe UI", Arial, sans-serif;
	--irota-font-size-xs: 0.75rem;
	--irota-font-size-sm: 0.875rem;
	--irota-font-size-md: 1rem;
	--irota-font-size-lg: 1.125rem;
	--irota-font-size-xl: 1.25rem;
	--irota-font-size-2xl: 1.5rem;
	--irota-font-size-3xl: 1.875rem;
	--irota-line-height-tight: 1.3;
	--irota-line-height-body: 1.7;
	--irota-font-weight-regular: 400;
	--irota-font-weight-medium: 500;
	--irota-font-weight-semibold: 600;
	--irota-font-weight-bold: 700;

	/* Spacing scale — 4px grid, design-system primitive. */
	--irota-space-0: 0;
	--irota-space-1: 0.25rem;
	--irota-space-2: 0.5rem;
	--irota-space-3: 0.75rem;
	--irota-space-4: 1rem;
	--irota-space-5: 1.25rem;
	--irota-space-6: 1.5rem;
	--irota-space-8: 2rem;
	--irota-space-10: 2.5rem;
	--irota-space-12: 3rem;
	--irota-space-16: 4rem;

	/* Radius scale — option 1 uses soft, continuous geometry. */
	--irota-radius-sm: 0.625rem;
	--irota-radius-md: 0.75rem;
	--irota-radius-lg: 1.125rem;
	--irota-radius-xl: 1.5rem;
	--irota-radius-2xl: 2.25rem;
	--irota-radius-3xl: 2.75rem;
	--irota-radius-hero: 2.5rem;
	--irota-radius-pill: 999px;
	--irota-radius-control: 0.875rem;
	--irota-notch-width: clamp(4.75rem, 8vw, 6.75rem);
	--irota-notch-depth: clamp(1.15rem, 2vw, 1.75rem);
	--irota-notch-width-lg: clamp(5.5rem, 8vw, 7.5rem);
	--irota-notch-depth-lg: clamp(1.4rem, 2.2vw, 2rem);
	/* Inverted-radius geometry. The homepage uses a soft centered inner
	 * curve; selected internal heroes use two restrained diagonal scoops. */
	--irota-notch-radius: clamp(1.1rem, 1.8vw, 1.6rem);
	--irota-notch-cut: clamp(2.2rem, 3.4vw, 3.2rem);
	--irota-notch-angle: 38deg;
	--irota-corner-scoop: clamp(1.35rem, 2.4vw, 2.15rem);
	--irota-header-tool-height: 3rem;

	/* Elevation — uses official green #00530F as the shadow hue. */
	--irota-shadow-sm: 0 0.5rem 1.5rem rgba(23, 53, 38, 0.06);
	--irota-shadow-md: 0 1.25rem 3.5rem rgba(23, 53, 38, 0.1);
	--irota-shadow-float: 0 1.5rem 4rem rgba(23, 53, 38, 0.16);

	/* Layout primitives — not brand facts. */
	--irota-container: 78rem;
	--irota-gutter: clamp(1rem, 3vw, 2rem);
	/* A single calm ring keeps selected fields legible without the previous
	 * stacked white/gold halo. The solid teal outline provides contrast. */
	--irota-focus-ring: 2px solid var(--irota-color-teal);
	--irota-focus-ring-shadow: 0 0 0 3px color-mix(in srgb, var(--irota-color-teal) 22%, transparent);
	--irota-btn-height: 48px;
	--irota-btn-height-lg: 52px;
	--irota-motion-fast: 180ms cubic-bezier(.2, .8, .2, 1);
	--irota-motion-smooth: 420ms cubic-bezier(.22, 1, .36, 1);
	--irota-transition: var(--irota-motion-fast);
	--irota-touch: 44px;
	--irota-color-surface-subtle: var(--irota-color-surface-tint);
	--irota-color-hero: var(--irota-color-green);
}