/* ─── components.css — Buttons, Cards, Forms, Interactive ─── */

/* ─── Primary Button ─────────────────────────────────────── */

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-8);
  background-color: var(--brand-primary);
  color: var(--text-inverse);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: background-color var(--duration-base) var(--ease-out),
              transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.15) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  transition: transform var(--duration-slow) var(--ease-out);
}

.btn-primary:hover {
  background-color: var(--brand-accent);
  transform: translateY(-1px);
  box-shadow: var(--shadow-brand);
  color: var(--text-inverse);
}

.btn-primary:hover::before {
  transform: translateX(100%);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

/* Arrow icon in button */
.btn-primary .btn-arrow {
  transition: transform var(--duration-base) var(--ease-spring);
}

.btn-primary:hover .btn-arrow {
  transform: translateX(4px);
}

/* ─── Ghost Button ───────────────────────────────────────── */

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--border-medium);
  cursor: pointer;
  transition: border-color var(--duration-fast) ease,
              color var(--duration-fast) ease,
              background-color var(--duration-fast) ease;
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}

.btn-ghost:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  background-color: rgba(91, 173, 222, 0.05);
}

/* ─── Header CTA (in nav) ────────────────────────────────── */

.btn-nav-cta {
  display: inline-block;
  padding: var(--space-2) var(--space-6);
  background: transparent;
  color: var(--brand-primary);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--brand-primary);
  cursor: pointer;
  transition: background-color var(--duration-fast) ease,
              color var(--duration-fast) ease;
  text-decoration: none;
  line-height: 2;
  white-space: nowrap;
}

.btn-nav-cta:hover {
  background-color: var(--brand-primary);
  color: var(--text-inverse);
}

/* ─── Reveal Animation Classes ───────────────────────────── */
/* Applied by IntersectionObserver on scroll */

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity var(--duration-reveal) var(--ease-out),
              transform var(--duration-reveal) var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-clip {
  clip-path: inset(100% 0 0 0);
  transition: clip-path var(--duration-reveal) var(--ease-out);
}

.reveal-clip.is-visible {
  clip-path: inset(0 0 0 0);
}

/* Stagger delays for children */
.stagger > *:nth-child(1) { transition-delay: 0ms; }
.stagger > *:nth-child(2) { transition-delay: 80ms; }
.stagger > *:nth-child(3) { transition-delay: 160ms; }
.stagger > *:nth-child(4) { transition-delay: 240ms; }
.stagger > *:nth-child(5) { transition-delay: 320ms; }
.stagger > *:nth-child(6) { transition-delay: 400ms; }

/* ─── Image Hover Zoom ───────────────────────────────────── */

.img-zoom-container {
  overflow: hidden;
  position: relative;
}

.img-zoom-container img {
  transition: transform var(--duration-slow) var(--ease-out);
  will-change: transform;
}

.img-zoom-container:hover img {
  transform: scale(1.04);
}

/* ─── Horizontal Rule / Section Break ────────────────────── */

.section-rule {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: 0;
}

/* ─── Form Styles ────────────────────────────────────────── */

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4) var(--space-5);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-family: var(--font-body);
}

.form-field.full-width {
  grid-column: 1 / -1;
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.form-input,
.form-textarea {
  padding: var(--space-3) var(--space-4);
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--text-body);
  outline: none;
  transition: border-color var(--duration-fast) ease,
              background-color var(--duration-fast) ease,
              box-shadow var(--duration-fast) ease;
  appearance: none;
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--brand-primary);
  background-color: rgba(91, 173, 222, 0.05);
  box-shadow: 0 0 0 2px rgba(91, 173, 222, 0.12);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-secondary);
  opacity: 0.5;
}

.form-error {
  font-size: var(--text-xs);
  color: #f87171;
  display: none;
}

.form-success-message {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--brand-primary);
  text-align: center;
  display: none;
  padding: var(--space-4);
  border: 1px solid var(--border-medium);
}

.submit-row {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.disclaimer-text {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  opacity: 0.6;
  max-width: 480px;
}

/* ─── Skip Link (accessibility) ─────────────────────────── */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--brand-primary);
  color: var(--text-inverse);
  font-weight: 700;
  font-size: var(--text-sm);
  z-index: 9999;
  transition: top 0.1s;
}

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

/* ─── Inline Code / Monospace ────────────────────────────── */

code {
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
  background-color: var(--surface-raised);
  padding: 0.1em 0.4em;
  color: var(--brand-primary);
}

/* ─── Selection Color ────────────────────────────────────── */

::selection {
  background-color: var(--brand-primary);
  color: var(--text-inverse);
}

/* ─── Focus Visible ──────────────────────────────────────── */

:focus-visible {
  outline: 2px solid var(--brand-primary);
  outline-offset: 3px;
}

/* ─── Scrollbar (webkit) ─────────────────────────────────── */

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--surface-base);
}

::-webkit-scrollbar-thumb {
  background: var(--border-medium);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--brand-primary);
}

/* ─── Form grid responsive ───────────────────────────────── */

@media (max-width: 600px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}