/* ================================================================
   FEATURES.CSS – Lightbox & Form components
   Loaded AFTER main.css to extend the design system.
   Do NOT put resets, tokens, or global overrides here.
   ================================================================ */

/* ========== LIGHTBOX ========== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out),
              visibility var(--duration-normal) var(--ease-out);
}

.lightbox.is-active {
  opacity: 1;
  visibility: visible;
}

.lightbox__img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius-md);
  box-shadow: 0 16px 64px rgba(0, 0, 0, 0.5);
  object-fit: contain;
  user-select: none;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.lightbox__btn {
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}

.lightbox__btn:hover,
.lightbox__btn:focus-visible {
  background: rgba(255, 255, 255, 0.22);
  transform: scale(1.08);
}

.lightbox__btn:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.6);
  outline-offset: 2px;
}

.lightbox__close {
  top: var(--space-lg);
  right: var(--space-lg);
  font-size: 1.25rem;
}

.lightbox__prev {
  left: var(--space-lg);
  top: 50%;
  transform: translateY(-50%);
  font-size: 2rem;
}

.lightbox__prev:hover,
.lightbox__prev:focus-visible {
  transform: translateY(-50%) scale(1.08);
}

.lightbox__next {
  right: var(--space-lg);
  top: 50%;
  transform: translateY(-50%);
  font-size: 2rem;
}

.lightbox__next:hover,
.lightbox__next:focus-visible {
  transform: translateY(-50%) scale(1.08);
}

.lightbox__counter {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--text-sm);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

/* Lightbox responsive */
@media (max-width: 640px) {
  .lightbox__prev,
  .lightbox__next {
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
  }

  .lightbox__prev {
    left: var(--space-sm);
  }

  .lightbox__next {
    right: var(--space-sm);
  }

  .lightbox__close {
    top: var(--space-md);
    right: var(--space-md);
    width: 40px;
    height: 40px;
  }

  .lightbox__img {
    max-width: 96vw;
    max-height: 80vh;
    border-radius: var(--radius-sm);
  }
}

/* ========== FORM COMPONENTS ========== */
.form__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

@media (max-width: 640px) {
  .form__grid {
    grid-template-columns: 1fr;
  }
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}

.form__label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-heading);
  letter-spacing: var(--tracking-wide);
}

.form__input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.form__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-bg);
}

.form__input::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

.form__group--checkbox {
  flex-direction: row;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.form__group--checkbox input[type="checkbox"] {
  width: 1.15em;
  height: 1.15em;
  margin-top: 0.15em;
  flex-shrink: 0;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.form__label--checkbox {
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
  cursor: pointer;
}

.form__error {
  padding: var(--space-sm) var(--space-md);
  margin-bottom: var(--space-lg);
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius-md);
  color: #991b1b;
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}

[data-theme="dark"] .form__error {
  background: rgba(153, 27, 27, 0.15);
  border-color: rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.form__privacy {
  margin-top: var(--space-md);
  font-size: var(--text-xs);
  text-align: center;
}

.btn--full {
  width: 100%;
  justify-content: center;
}

/* Gallery cursor hint for lightbox-enabled items */
.gallery__item[role="button"] {
  cursor: zoom-in;
}