/* Base / reset — mobile-first, RTL-first (spec §2). */

*, *::before, *::after { box-sizing: border-box; }

html {
    direction: rtl;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    background: var(--color-background);
    color: var(--color-text);
    font-family: var(--font-family-base);
    font-size: 15px;
    line-height: 1.7;
    transition: background var(--transition-base), color var(--transition-base);
    min-height: 100vh;
}

img, picture, video { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }

button { cursor: pointer; background: none; border: none; }

ul, ol { margin: 0; padding: 0; list-style: none; }

h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 700; line-height: 1.3; }

p { margin: 0; }

.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--space-4);
}

@media (min-width: 768px) {
    .container { padding-inline: var(--space-6); }
}

/* Visible, consistent keyboard focus everywhere (spec §27, Accessibility) */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

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

.skip-link {
    position: absolute;
    right: var(--space-3);
    top: -50px;
    background: var(--color-primary);
    color: var(--color-on-primary);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-sm);
    z-index: 1000;
    transition: top var(--transition-fast);
}
.skip-link:focus { top: var(--space-3); }

::selection { background: var(--color-primary); color: var(--color-on-primary); }

/* Simple utility classes reused across pages */
.section { padding-block: var(--space-7); }
.section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
    flex-wrap: wrap;
}
.section-head h2 { font-size: 1.4rem; }
.link-more { color: var(--color-primary); font-weight: 600; white-space: nowrap; }
.link-more:hover { color: var(--color-primary-hover); }

.grid-products {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}
@media (min-width: 640px) {
    .grid-products { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1024px) {
    .grid-products { grid-template-columns: repeat(4, 1fr); }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
    border: 1px solid transparent;
    min-height: 44px; /* touch-friendly, spec §39 */
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--color-primary); color: var(--color-on-primary); }
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-outline { background: transparent; border-color: var(--color-border); color: var(--color-text); }
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-ghost { background: var(--color-surface-alt); color: var(--color-text); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-block { width: 100%; }
.btn-sm { padding: var(--space-2) var(--space-3); min-height: 36px; font-size: 0.85rem; }
.btn[disabled], .btn.is-disabled { opacity: 0.5; pointer-events: none; }

.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--space-2);
    border-radius: var(--radius-pill);
    font-size: 0.72rem;
    font-weight: 700;
    background: var(--color-surface-alt);
    color: var(--color-text-muted);
}
.badge-sale { background: var(--color-sale); color: #fff; }
.badge-new { background: var(--color-info); color: #fff; }
.badge-featured { background: var(--color-accent); color: #fff; }
.badge-out { background: var(--color-danger); color: #fff; }

.price { font-weight: 700; }
.price-old {
    text-decoration: line-through;
    color: var(--color-text-muted);
    font-weight: 400;
    font-size: 0.85em;
    margin-inline-start: var(--space-2);
}
.price-discount { color: var(--color-sale); }

.form-field { display: flex; flex-direction: column; gap: var(--space-2); margin-bottom: var(--space-4); }
.form-field label { font-weight: 600; font-size: 0.9rem; }
.form-field input, .form-field select, .form-field textarea {
    padding: var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text);
    width: 100%;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
    border-color: var(--color-primary);
}
.form-field .field-error { color: var(--color-danger); font-size: 0.8rem; display: none; }
.form-field.has-error input, .form-field.has-error select, .form-field.has-error textarea { border-color: var(--color-danger); }
.form-field.has-error .field-error { display: block; }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.empty-state, .error-state {
    text-align: center;
    padding: var(--space-8) var(--space-4);
    color: var(--color-text-muted);
}
.empty-state h3, .error-state h3 { color: var(--color-text); margin-bottom: var(--space-2); }

.skeleton {
    background: linear-gradient(90deg, var(--color-surface-alt) 25%, var(--color-border) 37%, var(--color-surface-alt) 63%);
    background-size: 400% 100%;
    animation: skeleton-loading 1.4s ease infinite;
    border-radius: var(--radius-md);
}
@keyframes skeleton-loading {
    0% { background-position: 100% 50%; }
    100% { background-position: 0 50%; }
}

@media (prefers-reduced-motion: reduce) {
    * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}