/* ============================================================
   PARADIGM BIO METAL — Components
   Second Pass: Premium buttons, enhanced cards, polished UI
   ============================================================ */

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-accent-light) 100%);
  color: var(--clr-white);
  box-shadow: var(--shadow-accent), inset 0 1px 0 rgba(255,255,255,0.15);
}

.btn--primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 40px rgba(224, 107, 10, 0.40), inset 0 1px 0 rgba(255,255,255,0.2);
  color: var(--clr-white);
}

.btn--primary:active {
  transform: translateY(-1px) scale(0.99);
}

.btn--primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--duration-slow) var(--ease-out);
}

.btn--primary:hover::before {
  left: 100%;
}

/* Subtle shimmer on primary buttons */
.btn--primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -150%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.06), transparent);
  transform: skewX(-20deg);
  animation: slideHorizontal 5s ease-in-out infinite;
}

.btn--secondary {
  background: transparent;
  color: var(--clr-white);
  border: 1.5px solid var(--clr-border-light);
  backdrop-filter: blur(8px);
}

.btn--secondary:hover {
  border-color: var(--clr-blue-400);
  background: rgba(30, 136, 229, 0.10);
  color: var(--clr-blue-300);
  transform: translateY(-3px);
  box-shadow: 0 0 20px rgba(30, 136, 229, 0.1);
}

.btn--sm {
  padding: 10px 22px;
  font-size: var(--fs-xs);
}

.btn--lg {
  padding: 18px 42px;
  font-size: var(--fs-base);
}

.btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
}

.btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* ── Cards ─────────────────────────────────────────────────── */
.card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transform-style: preserve-3d;
  perspective: 1000px;
  transform: perspective(1000px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(0px);
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out);
}

.card:hover {
  transform: perspective(1000px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45), 0 0 20px rgba(30, 136, 229, 0.18);
  border-color: var(--clr-border-blue);
}

/* Top accent line on cards */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--clr-blue-500), transparent);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.card:hover::before {
  opacity: 1;
}

.card__image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
}

.card__body {
  padding: var(--space-xl);
}

.card__label {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--clr-blue-400);
  margin-bottom: var(--space-sm);
}

.card__title {
  font-size: var(--fs-xl);
  margin-bottom: var(--space-sm);
}

.card__desc {
  font-size: var(--fs-sm);
  color: var(--clr-text-secondary);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--space-lg);
}

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

.card__spec {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--fs-sm);
  color: var(--clr-text-secondary);
}

.card__spec-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--clr-blue-400);
}

.card__spec strong {
  color: var(--clr-text-primary);
  font-weight: var(--fw-semibold);
}

.card__footer {
  padding: var(--space-md) var(--space-xl) var(--space-xl);
}

/* Card - Equipment variant */
.card--equipment .card__image {
  aspect-ratio: 16/10;
}

/* Card - Product variant */
.card--product {
  text-align: center;
}

.card--product .card__body {
  padding: var(--space-lg);
}

.card--product .card__icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(30, 136, 229, 0.15), rgba(30, 136, 229, 0.05));
  border-radius: var(--radius-md);
  border: 1px solid var(--clr-border-blue);
  transition: transform var(--duration-normal) var(--ease-spring),
              box-shadow var(--duration-normal) var(--ease-out);
}

.card--product:hover .card__icon {
  transform: scale(1.1) rotate(3deg);
  box-shadow: 0 0 20px rgba(30, 136, 229, 0.2);
}

.card--product .card__icon svg {
  width: 28px;
  height: 28px;
  color: var(--clr-blue-400);
}

/* Card - Benefit variant */
.card--benefit {
  padding: var(--space-xl);
  text-align: center;
  border: 1px solid transparent;
}

.card--benefit:hover {
  border-color: var(--clr-border-blue);
}

.card--benefit .benefit-icon {
  width: 68px;
  height: 68px;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(30, 136, 229, 0.14), rgba(30, 136, 229, 0.04));
  border: 1px solid var(--clr-border-blue);
  border-radius: var(--radius-lg);
  transition: transform var(--duration-normal) var(--ease-spring),
              background var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.card--benefit:hover .benefit-icon {
  transform: scale(1.12) translateY(-4px);
  background: linear-gradient(135deg, rgba(30, 136, 229, 0.22), rgba(30, 136, 229, 0.08));
  box-shadow: 0 8px 24px rgba(30, 136, 229, 0.15);
}

.card--benefit .benefit-icon svg {
  width: 30px;
  height: 30px;
  color: var(--clr-blue-400);
}

.card--benefit h4 {
  margin-bottom: var(--space-sm);
}

.card--benefit p {
  font-size: var(--fs-sm);
  margin: 0 auto;
}

/* ── Badge ─────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wide);
  border-radius: var(--radius-full);
  background: rgba(30, 136, 229, 0.10);
  color: var(--clr-blue-400);
  border: 1px solid rgba(30, 136, 229, 0.2);
  transition: all var(--duration-fast) var(--ease-out);
}

.badge--accent {
  background: rgba(224, 107, 10, 0.10);
  color: var(--clr-accent-light);
  border-color: rgba(224, 107, 10, 0.2);
}

/* ── Table ─────────────────────────────────────────────────── */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--clr-border);
  background: var(--glass-bg);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
}

.table thead {
  background: var(--clr-surface);
}

.table th {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--clr-text-secondary);
  border-bottom: 1px solid var(--clr-border);
  white-space: nowrap;
}

.table td {
  padding: var(--space-md) var(--space-lg);
  color: var(--clr-text-secondary);
  border-bottom: 1px solid var(--clr-border);
  vertical-align: top;
}

.table tbody tr {
  transition: background var(--duration-fast) var(--ease-out);
}

.table tbody tr:hover {
  background: rgba(30, 136, 229, 0.05);
}

.table tbody tr:last-child td {
  border-bottom: none;
}

.table td strong {
  color: var(--clr-text-primary);
  font-weight: var(--fw-semibold);
}

/* ── Form ──────────────────────────────────────────────────── */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.form__label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-text-secondary);
}

.form__input,
.form__textarea {
  width: 100%;
  padding: 14px 18px;
  font-size: var(--fs-base);
  color: var(--clr-text-primary);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-light);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out),
              background var(--duration-fast) var(--ease-out);
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--clr-text-muted);
}

.form__input:focus,
.form__textarea:focus {
  border-color: var(--clr-blue-600);
  box-shadow: 0 0 0 3px var(--clr-blue-glow-soft);
  background: var(--clr-surface-light);
}

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

.form__input.error {
  border-color: #EF4444;
}

.form__error {
  font-size: var(--fs-xs);
  color: #EF4444;
  display: none;
}

.form__input.error + .form__error {
  display: block;
}

/* ── Divider ───────────────────────────────────────────────── */
.divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-blue-400), var(--clr-blue-700));
  border-radius: var(--radius-full);
  margin: var(--space-md) 0;
}

.divider--center {
  margin-left: auto;
  margin-right: auto;
}

/* ── Gallery Tabs ──────────────────────────────────────────── */
.tabs {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
  justify-content: center;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 10px 24px;
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-text-muted);
  background: transparent;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
}

.tab-btn:hover {
  color: var(--clr-text-primary);
  border-color: var(--clr-border-light);
  background: rgba(30, 136, 229, 0.05);
}

.tab-btn.active {
  color: var(--clr-white);
  background: linear-gradient(135deg, var(--clr-blue-800), var(--clr-blue-700));
  border-color: var(--clr-blue-600);
  box-shadow: 0 2px 12px rgba(30, 136, 229, 0.15);
}

/* ── Lightbox ──────────────────────────────────────────────── */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-modal);
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out),
              visibility var(--duration-normal) var(--ease-out);
}

.lightbox.open {
  opacity: 1;
  visibility: visible;
}

.lightbox__content {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.lightbox__content img,
.lightbox__content video {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
}

.lightbox__close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: white;
  font-size: var(--fs-xl);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}

.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

/* ── Responsive: Forms ─────────────────────────────────────── */
@media (max-width: 768px) {
  .btn {
    max-width: 100%;
    min-width: 0;
    padding-left: clamp(16px, 5vw, 28px);
    padding-right: clamp(16px, 5vw, 28px);
    white-space: normal;
    text-align: center;
    line-height: 1.25;
    letter-spacing: 0.04em;
    overflow-wrap: anywhere;
  }

  .btn--lg {
    padding-left: clamp(18px, 6vw, 30px);
    padding-right: clamp(18px, 6vw, 30px);
  }

  .badge,
  .tab-btn {
    max-width: 100%;
    min-width: 0;
    white-space: normal;
    text-align: center;
    overflow-wrap: break-word;
  }

  .form__row {
    grid-template-columns: 1fr;
  }

  .table-wrap {
    max-width: 100%;
    min-width: 0;
    -webkit-overflow-scrolling: touch;
  }
}