/**
 * Achol Core – Base Styles
 * Version: 1.0.0
 *
 * Minimal reset + foundational styles.
 * Mobile-first.
 */

/* ========================================
   BOX SIZING & RESET
   ======================================== */
*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	font-size: 100%;
	-webkit-text-size-adjust: 100%;
	scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
	html {
		scroll-behavior: auto;
	}
}

body {
	margin: 0;
	padding: 0;
	font-family: var(--achol-font-body);
	font-size: var(--achol-font-size-base);
	font-weight: var(--achol-font-weight-regular);
	line-height: var(--achol-line-height-normal);
	color: var(--achol-color-text);
	background-color: var(--achol-color-background);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

/* Bangla content preference */
:lang(bn),
.lang-bn,
.achol-bangla {
	font-family: var(--achol-font-bangla);
}

/* ========================================
   TYPOGRAPHY BASE
   ======================================== */
h1, h2, h3, h4, h5, h6 {
	margin: 0 0 var(--achol-space-4);
	font-weight: var(--achol-font-weight-semibold);
	line-height: var(--achol-line-height-tight);
	color: var(--achol-color-secondary);
}

h1 { font-size: var(--achol-font-size-3xl); }
h2 { font-size: var(--achol-font-size-2xl); }
h3 { font-size: var(--achol-font-size-xl); }
h4 { font-size: var(--achol-font-size-lg); }
h5 { font-size: var(--achol-font-size-md); }
h6 { font-size: var(--achol-font-size-base); }

p {
	margin: 0 0 var(--achol-space-4);
}

a {
	color: var(--achol-color-primary);
	text-decoration: none;
	transition: color var(--achol-transition-fast);
}

a:hover {
	color: var(--achol-color-primary-hover);
}

a:focus-visible {
	outline: var(--achol-focus-outline);
	outline-offset: var(--achol-focus-outline-offset);
}

img,
svg,
video {
	max-width: 100%;
	height: auto;
	display: block;
}

ul, ol {
	margin: 0 0 var(--achol-space-4);
	padding-left: var(--achol-space-6);
}

/* ========================================
   ACCESSIBILITY
   ======================================== */
.screen-reader-text,
.sr-only {
	border: 0;
	clip: rect(1px, 1px, 1px, 1px);
	clip-path: inset(50%);
	height: 1px;
	margin: -1px;
	overflow: hidden;
	padding: 0;
	position: absolute;
	width: 1px;
	word-wrap: normal !important;
}

.screen-reader-text:focus,
.sr-only:focus {
	background-color: var(--achol-color-background);
	border-radius: var(--achol-radius-md);
	box-shadow: var(--achol-shadow-md);
	clip: auto !important;
	clip-path: none;
	color: var(--achol-color-secondary);
	display: block;
	font-size: var(--achol-font-size-sm);
	font-weight: var(--achol-font-weight-medium);
	height: auto;
	left: var(--achol-space-2);
	line-height: normal;
	padding: var(--achol-space-3) var(--achol-space-4);
	text-decoration: none;
	top: var(--achol-space-2);
	width: auto;
	z-index: 100000;
}

.skip-link {
	position: absolute;
	top: -100px;
	left: var(--achol-space-4);
	z-index: 100000;
	padding: var(--achol-space-3) var(--achol-space-4);
	background: var(--achol-color-secondary);
	color: var(--achol-color-text-inverse);
	text-decoration: none;
	border-radius: var(--achol-radius-md);
}

.skip-link:focus {
	top: var(--achol-space-4);
}

/* ========================================
   LAYOUT UTILITIES
   ======================================== */
.achol-container {
	width: 100%;
	max-width: var(--achol-container-max);
	margin-left: auto;
	margin-right: auto;
	padding-left: var(--achol-gutter-mobile);
	padding-right: var(--achol-gutter-mobile);
}

@media (min-width: 768px) {
	.achol-container {
		padding-left: var(--achol-gutter);
		padding-right: var(--achol-gutter);
	}
}

.achol-container--narrow {
	max-width: var(--achol-container-md);
}

.achol-container--wide {
	max-width: var(--achol-container-2xl);
}

/* ========================================
   BUTTON BASE STATES
   ======================================== */
.achol-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: var(--achol-space-2);
	padding: 0.75rem 1.5rem;
	font-family: inherit;
	font-size: var(--achol-font-size-sm);
	font-weight: var(--achol-font-weight-medium);
	line-height: 1.25;
	text-align: center;
	text-decoration: none;
	border: 1px solid transparent;
	border-radius: var(--achol-radius-button);
	cursor: pointer;
	transition: background-color var(--achol-transition-fast),
	            color var(--achol-transition-fast),
	            border-color var(--achol-transition-fast),
	            box-shadow var(--achol-transition-fast);
	user-select: none;
}

.achol-btn:focus-visible {
	outline: none;
	box-shadow: var(--achol-focus-ring);
}

.achol-btn:disabled,
.achol-btn.is-disabled {
	opacity: 0.5;
	cursor: not-allowed;
	pointer-events: none;
}

.achol-btn.is-loading {
	position: relative;
	color: transparent !important;
	pointer-events: none;
}

.achol-btn.is-loading::after {
	content: '';
	position: absolute;
	width: 1rem;
	height: 1rem;
	border: 2px solid currentColor;
	border-right-color: transparent;
	border-radius: 50%;
	animation: achol-spin 0.6s linear infinite;
}

@keyframes achol-spin {
	to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
	.achol-btn.is-loading::after {
		animation: none;
		border-right-color: currentColor;
	}
}

/* Primary Button */
.achol-btn--primary {
	background-color: var(--achol-color-primary);
	color: var(--achol-color-text-inverse);
	border-color: var(--achol-color-primary);
}

.achol-btn--primary:hover {
	background-color: var(--achol-color-primary-hover);
	border-color: var(--achol-color-primary-hover);
	color: var(--achol-color-text-inverse);
}

.achol-btn--primary:active {
	background-color: var(--achol-color-primary-active);
	border-color: var(--achol-color-primary-active);
}

/* Secondary / Outline */
.achol-btn--secondary {
	background-color: transparent;
	color: var(--achol-color-secondary);
	border-color: var(--achol-color-secondary);
}

.achol-btn--secondary:hover {
	background-color: var(--achol-color-secondary);
	color: var(--achol-color-text-inverse);
}

/* Ghost */
.achol-btn--ghost {
	background-color: transparent;
	color: var(--achol-color-secondary);
	border-color: transparent;
}

.achol-btn--ghost:hover {
	background-color: var(--achol-color-soft-neutral);
}

/* Size variants */
.achol-btn--sm {
	padding: 0.5rem 1rem;
	font-size: var(--achol-font-size-xs);
}

.achol-btn--lg {
	padding: 1rem 2rem;
	font-size: var(--achol-font-size-base);
}

.achol-btn--full {
	width: 100%;
}

/* ========================================
   FORM BASE STATES
   ======================================== */
.achol-input,
.achol-select,
.achol-textarea {
	display: block;
	width: 100%;
	padding: 0.75rem 1rem;
	font-family: inherit;
	font-size: var(--achol-font-size-base);
	line-height: 1.5;
	color: var(--achol-color-text);
	background-color: var(--achol-color-background);
	border: 1px solid var(--achol-color-border);
	border-radius: var(--achol-radius-input);
	transition: border-color var(--achol-transition-fast),
	            box-shadow var(--achol-transition-fast);
}

.achol-input:focus,
.achol-select:focus,
.achol-textarea:focus {
	outline: none;
	border-color: var(--achol-color-primary);
	box-shadow: var(--achol-focus-ring);
}

.achol-input.is-error,
.achol-select.is-error,
.achol-textarea.is-error {
	border-color: var(--achol-color-error);
}

.achol-input.is-success,
.achol-select.is-success,
.achol-textarea.is-success {
	border-color: var(--achol-color-success);
}

.achol-input:disabled,
.achol-select:disabled,
.achol-textarea:disabled {
	background-color: var(--achol-color-soft-neutral);
	cursor: not-allowed;
	opacity: 0.7;
}

.achol-label {
	display: block;
	margin-bottom: var(--achol-space-2);
	font-size: var(--achol-font-size-sm);
	font-weight: var(--achol-font-weight-medium);
	color: var(--achol-color-text);
}

.achol-field-error {
	margin-top: var(--achol-space-1);
	font-size: var(--achol-font-size-xs);
	color: var(--achol-color-error);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.achol-text-center { text-align: center; }
.achol-text-left { text-align: left; }
.achol-text-right { text-align: right; }

.achol-visually-hidden {
	position: absolute !important;
	width: 1px !important;
	height: 1px !important;
	padding: 0 !important;
	margin: -1px !important;
	overflow: hidden !important;
	clip: rect(0, 0, 0, 0) !important;
	white-space: nowrap !important;
	border: 0 !important;
}

.achol-no-scroll {
	overflow: hidden;
}