/* ==========================================================================
   components.css — Reusable UI components
   ========================================================================== */

@layer components {
  /* ---------------- Buttons ---------------- */
  .btn {
    --btn-bg: var(--surface-2);
    --btn-fg: var(--text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.35rem;
    font-size: var(--fs-sm);
    font-weight: 600;
    line-height: 1;
    color: var(--btn-fg);
    background: var(--btn-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    cursor: pointer;
    white-space: nowrap;
    transition: transform var(--dur-fast) var(--ease-out),
                background var(--dur) var(--ease-out),
                border-color var(--dur) var(--ease-out),
                box-shadow var(--dur) var(--ease-out),
                color var(--dur) var(--ease-out);
  }
  .btn:hover { transform: translateY(-1px); }
  .btn:active { transform: translateY(0); }
  .btn svg { width: 1.05em; height: 1.05em; }

  .btn--primary {
    --btn-bg: var(--primary);
    --btn-fg: var(--text-on-primary);
    border-color: transparent;
    box-shadow: var(--shadow-sm);
  }
  .btn--primary:hover {
    --btn-bg: var(--primary-hover);
    box-shadow: var(--shadow-glow);
  }
  .btn--ghost { --btn-bg: transparent; border-color: var(--border-strong); }
  .btn--ghost:hover { --btn-bg: var(--surface-2); }
  .btn--lg { padding: 0.95rem 1.75rem; font-size: var(--fs-base); }
  .btn--block { width: 100%; }

  /* Icon-only control button */
  .icon-btn {
    display: inline-grid;
    place-items: center;
    width: 2.5rem; height: 2.5rem;
    border-radius: var(--radius-pill);
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-2);
    cursor: pointer;
    transition: background var(--dur) var(--ease-out),
                color var(--dur) var(--ease-out),
                transform var(--dur-fast) var(--ease-out);
  }
  .icon-btn:hover { background: var(--surface-2); color: var(--text); }
  .icon-btn:active { transform: scale(0.94); }
  .icon-btn svg { width: 1.2rem; height: 1.2rem; }

  /* ---------------- Badges / pills ---------------- */
  .badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.7rem;
    font-size: var(--fs-xs);
    font-weight: 600;
    border-radius: var(--radius-pill);
    background: var(--surface-2);
    color: var(--text-2);
    border: 1px solid var(--border);
  }
  .badge--accent { color: var(--primary); background: var(--primary-soft); border-color: transparent; }
  .badge--dot::before {
    content: "";
    width: 0.45rem; height: 0.45rem;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 25%, transparent);
  }

  /* ---------------- Cards ---------------- */
  .card {
    position: relative;
    padding: var(--space-6);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--dur) var(--ease-out),
                border-color var(--dur) var(--ease-out),
                box-shadow var(--dur) var(--ease-out);
  }
  .card--hover:hover {
    transform: translateY(-4px);
    border-color: var(--border-strong);
    box-shadow: var(--shadow-lg);
  }
  .card__icon {
    display: grid;
    place-items: center;
    width: 3rem; height: 3rem;
    border-radius: var(--radius-md);
    background: var(--primary-soft);
    color: var(--primary);
    margin-block-end: var(--space-4);
  }
  .card__icon svg { width: 1.4rem; height: 1.4rem; }
  .card__title { font-size: var(--fs-md); margin-block-end: var(--space-2); }
  .card__text { color: var(--text-2); font-size: var(--fs-sm); }

  /* Placeholder visual block */
  .placeholder {
    display: grid;
    place-items: center;
    min-height: 9rem;
    padding: var(--space-5);
    text-align: center;
    color: var(--text-3);
    font-size: var(--fs-sm);
    font-weight: 500;
    background:
      repeating-linear-gradient(135deg,
        var(--surface-2) 0 12px,
        transparent 12px 24px);
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-md);
  }
  .placeholder--media { aspect-ratio: 16 / 10; min-height: 0; }
  .placeholder--avatar { width: 3rem; height: 3rem; min-height: 0; border-radius: 50%; }

  /* ---------------- Grids ---------------- */
  .grid { display: grid; gap: var(--space-5); }
  .grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr)); }
  .grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); }
  .grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr)); }

  .split {
    display: grid;
    gap: var(--space-7);
    align-items: center;
    grid-template-columns: 1fr;
  }
  @media (min-width: 860px) {
    .split { grid-template-columns: 1fr 1fr; }
    .split--media-end > .split__media { order: 2; }
  }

  /* ---------------- Skills / tags ---------------- */
  .tag-cloud { display: flex; flex-wrap: wrap; gap: 0.6rem; }
  .tag {
    padding: 0.5rem 0.9rem;
    font-size: var(--fs-sm);
    font-weight: 500;
    border-radius: var(--radius-pill);
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text);
    transition: border-color var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
  }
  .tag:hover { border-color: var(--primary); color: var(--primary); }

  /* ---------------- Timeline (Experience) ---------------- */
  .timeline { position: relative; display: grid; gap: var(--space-6); }
  .timeline::before {
    content: "";
    position: absolute;
    inset-block: 0.4rem 0.4rem;
    inset-inline-start: 0.5rem;
    width: 2px;
    background: linear-gradient(var(--border-strong), transparent);
  }
  .timeline__item { position: relative; padding-inline-start: 2.25rem; }
  .timeline__item::before {
    content: "";
    position: absolute;
    inset-inline-start: 0;
    inset-block-start: 0.4rem;
    width: 1.05rem; height: 1.05rem;
    border-radius: 50%;
    background: var(--bg);
    border: 2px solid var(--primary);
    box-shadow: 0 0 0 4px var(--primary-soft);
  }
  .timeline__meta {
    font-size: var(--fs-xs);
    font-weight: 600;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    color: var(--primary);
    margin-block-end: var(--space-2);
  }
  .timeline__role { font-size: var(--fs-md); }
  .timeline__org { color: var(--text-2); font-size: var(--fs-sm); margin-block-end: var(--space-3); }

  /* ---------------- Projects ---------------- */
  .project-card { overflow: hidden; padding: 0; }
  .project-card__body { padding: var(--space-5); }
  .project-card__tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-block-start: var(--space-4); }
  .project-card__tags .tag { padding: 0.3rem 0.7rem; font-size: var(--fs-xs); }

  /* ---------------- Testimonials ---------------- */
  .quote-card blockquote {
    font-size: var(--fs-md);
    line-height: var(--lh-snug);
    color: var(--text);
    margin-block-end: var(--space-5);
  }
  .quote-card__author { display: flex; align-items: center; gap: 0.85rem; }
  .quote-card__name { font-weight: 600; font-size: var(--fs-sm); }
  .quote-card__title { color: var(--text-2); font-size: var(--fs-xs); }

  /* ---------------- Gallery ---------------- */
  .gallery { display: grid; gap: var(--space-4); grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr)); }
  .gallery__item { overflow: hidden; border-radius: var(--radius-md); border: 1px solid var(--border); }
  .gallery__item .placeholder { border: 0; border-radius: 0; }

  /* ---------------- Accordion (FAQ) ---------------- */
  .accordion { display: grid; gap: var(--space-3); }
  .accordion__item {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    overflow: hidden;
  }
  .accordion__trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-5);
    text-align: start;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: var(--fs-base);
    background: transparent;
    border: 0;
    cursor: pointer;
    color: var(--text);
  }
  [lang="ar"] .accordion__trigger { font-family: var(--font-arabic); }
  .accordion__icon {
    flex: none;
    transition: transform var(--dur) var(--ease-out);
    color: var(--text-2);
  }
  .accordion__trigger[aria-expanded="true"] .accordion__icon { transform: rotate(45deg); color: var(--primary); }
  .accordion__panel {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--dur) var(--ease-out);
  }
  .accordion__panel[data-open="true"] { grid-template-rows: 1fr; }
  .accordion__panel-inner { overflow: hidden; }
  .accordion__panel p {
    padding: 0 var(--space-5) var(--space-5);
    color: var(--text-2);
    font-size: var(--fs-sm);
  }

  /* ---------------- Forms (Contact) ---------------- */
  .form { display: grid; gap: var(--space-4); }
  .form__row { display: grid; gap: var(--space-4); grid-template-columns: 1fr; }
  @media (min-width: 600px) { .form__row { grid-template-columns: 1fr 1fr; } }
  .field { display: grid; gap: 0.45rem; }
  .field__label { font-size: var(--fs-sm); font-weight: 600; }
  .field__control {
    width: 100%;
    padding: 0.8rem 1rem;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    color: var(--text);
    transition: border-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
  }
  .field__control::placeholder { color: var(--text-3); }
  .field__control:focus-visible {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-soft);
  }
  textarea.field__control { resize: vertical; min-height: 8rem; }
  .field__error { font-size: var(--fs-xs); color: var(--error); min-height: 1em; }
  .field[data-invalid="true"] .field__control { border-color: var(--error); }

  /* ---------------- Theme & language switchers ---------------- */
  .theme-toggle .icon-btn__sun { display: none; }
  [data-theme="dark"] .theme-toggle .icon-btn__sun { display: block; }
  [data-theme="dark"] .theme-toggle .icon-btn__moon { display: none; }

  .lang-switch {
    display: inline-flex;
    padding: 0.2rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
  }
  .lang-switch__btn {
    padding: 0.3rem 0.7rem;
    font-size: var(--fs-xs);
    font-weight: 700;
    border: 0;
    background: transparent;
    color: var(--text-2);
    border-radius: var(--radius-pill);
    cursor: pointer;
    transition: background var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
  }
  .lang-switch__btn[aria-pressed="true"] { background: var(--bg); color: var(--text); box-shadow: var(--shadow-sm); }

  /* ---------------- Mobile menu ---------------- */
  .menu-toggle { display: inline-grid; }
  @media (min-width: 900px) { .menu-toggle { display: none; } }

  .mobile-menu {
    position: fixed;
    inset: 0;
    z-index: var(--z-overlay);
    display: grid;
    grid-template-rows: auto 1fr;
    background: var(--bg);
    transform: translateY(-100%);
    visibility: hidden;
    transition: transform var(--dur-slow) var(--ease-out), visibility var(--dur-slow);
  }
  .mobile-menu[data-open="true"] { transform: translateY(0); visibility: visible; }
  .mobile-menu__head {
    height: var(--header-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-inline: var(--gutter);
  }
  .mobile-menu__nav {
    display: grid;
    align-content: start;
    gap: 0.25rem;
    padding: var(--space-5) var(--gutter);
  }
  .mobile-menu__link {
    padding: 0.85rem 0.5rem;
    font-family: var(--font-display);
    font-size: var(--fs-lg);
    font-weight: 600;
    color: var(--text);
    border-block-end: 1px solid var(--border);
  }
  [lang="ar"] .mobile-menu__link { font-family: var(--font-arabic); }
  .mobile-menu__actions { display: flex; gap: var(--space-4); align-items: center; padding-block-start: var(--space-5); }

  /* ---------------- Modal ---------------- */
  .modal { border: 0; padding: 0; background: transparent; color: var(--text); }
  .modal::backdrop { background: color-mix(in srgb, #000 55%, transparent); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
  .modal__panel {
    width: min(92vw, 30rem);
    padding: var(--space-7);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
  }
  .modal[open] .modal__panel { animation: modal-in var(--dur) var(--ease-out); }
  @keyframes modal-in { from { opacity: 0; transform: translateY(8px) scale(0.98); } }
  .modal__title { font-size: var(--fs-lg); margin-block-end: var(--space-3); }
  .modal__text { color: var(--text-2); margin-block-end: var(--space-6); }

  /* ---------------- Toast ---------------- */
  .toast-region {
    position: fixed;
    inset-block-end: 1.25rem;
    inset-inline: 0;
    z-index: var(--z-toast);
    display: grid;
    gap: 0.6rem;
    justify-items: center;
    padding-inline: 1rem;
    pointer-events: none;
  }
  .toast {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    max-width: min(90vw, 26rem);
    padding: 0.85rem 1.1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-lg);
    color: var(--text);
    font-size: var(--fs-sm);
    font-weight: 500;
    pointer-events: auto;
    animation: toast-in var(--dur) var(--ease-out);
  }
  .toast[data-leaving="true"] { animation: toast-out var(--dur) var(--ease-in-out) forwards; }
  .toast__dot { width: 0.55rem; height: 0.55rem; border-radius: 50%; background: var(--success); flex: none; }
  .toast--error .toast__dot { background: var(--error); }
  @keyframes toast-in { from { opacity: 0; transform: translateY(12px); } }
  @keyframes toast-out { to { opacity: 0; transform: translateY(12px); } }

  /* ---------------- Back to top ---------------- */
  .back-to-top {
    position: fixed;
    inset-block-end: 1.5rem;
    inset-inline-end: 1.5rem;
    z-index: var(--z-header);
    display: grid;
    place-items: center;
    width: 2.85rem; height: 2.85rem;
    border-radius: 50%;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    opacity: 0;
    transform: translateY(12px) scale(0.9);
    pointer-events: none;
    transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
  }
  .back-to-top[data-visible="true"] { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
  .back-to-top:hover { color: var(--primary); border-color: var(--primary); }
}