/* ============================================================================
   Components - Buttons, Cards, Badges, Forms, Code Windows, Section Headers
   ============================================================================ */

/* ========================================================================
 * BUTTONS
 * ======================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: var(--leading-none);
  text-decoration: none;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  transition:
    background-color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0) scale(0.98);
}

/* Primary - Green CTA */
.btn--primary {
  background-color: var(--cta);
  color: var(--ink-black);
  border-color: var(--cta);
  position: relative;
  overflow: hidden;
}

.btn--primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.2) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  transition: transform var(--duration-slow) var(--ease-out);
}

.btn--primary:hover {
  background-color: var(--cta-hover);
  border-color: var(--cta-hover);
  box-shadow: var(--shadow-green);
}

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

/* Secondary - Outlined */
.btn--secondary {
  background-color: transparent;
  color: var(--text-on-dark);
  border-color: var(--border-dark-hover);
}

.btn--secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--text-on-dark);
}

/* Ghost - Transparent with subtle border */
.btn--ghost {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-on-dark);
  border-color: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
}

.btn--ghost:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
}

/* Button sizes */
.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

/* Button full width */
.btn--full {
  width: 100%;
}

/* Button icon */
.btn svg {
  width: 1.25em;
  height: 1.25em;
  flex-shrink: 0;
}

/* Button loading state */
.btn--loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn--loading::before {
  content: '';
  position: absolute;
  width: 1.25em;
  height: 1.25em;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: var(--radius-full);
  animation: spin 0.6s linear infinite;
  color: var(--ink-black);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========================================================================
 * CARDS
 * ======================================================================== */

.card {
  background-color: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--border-dark);
  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: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-dark-hover);
}

/* Dark card variant */
.card--dark {
  background-color: rgba(27, 38, 59, 0.6);
  border-color: rgba(224, 225, 221, 0.08);
}

.card--dark:hover {
  background-color: rgba(27, 38, 59, 0.8);
  border-color: rgba(224, 225, 221, 0.15);
}

/* Glass card variant */
.card--glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card--glass:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Light card - for use on light backgrounds */
.card--light {
  background-color: #ffffff;
  border-color: rgba(13, 27, 42, 0.08);
}

.card--light:hover {
  border-color: rgba(13, 27, 42, 0.15);
  box-shadow: 0 12px 40px rgba(13, 27, 42, 0.1);
}

/* Card icon */
.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: var(--space-4);
  border-radius: var(--radius-lg);
  background: rgba(52, 211, 153, 0.1);
  color: var(--color-success);
}

.card__icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
  color: var(--text-heading);
}

.card__description {
  font-size: var(--text-base);
  color: var(--text-on-dark-muted);
  line-height: var(--leading-relaxed);
}

/* Light card text colors */
.card--light .card__title {
  color: var(--text-on-light);
}

.card--light .card__description {
  color: var(--text-on-light-muted);
}

/* ========================================================================
 * BADGES
 * ======================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  border-radius: var(--radius-full);
  line-height: var(--leading-normal);
}

.badge--success {
  background-color: rgba(52, 211, 153, 0.15);
  color: var(--color-success);
}

.badge--warning {
  background-color: rgba(251, 191, 36, 0.15);
  color: var(--color-warning);
}

.badge--danger {
  background-color: rgba(248, 113, 113, 0.15);
  color: var(--color-danger);
}

.badge--info {
  background-color: rgba(96, 165, 250, 0.15);
  color: var(--accent);
}

.badge--neutral {
  background-color: rgba(224, 225, 221, 0.1);
  color: var(--text-on-dark-muted);
}

.badge svg {
  width: 0.875em;
  height: 0.875em;
}

/* ========================================================================
 * CODE WINDOW
 * ======================================================================== */

.code-window {
  background-color: rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.code-window__header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background-color: rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.code-window__dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: var(--radius-full);
}

.code-window__dot--red { background-color: #ff5f57; }
.code-window__dot--yellow { background-color: #febc2e; }
.code-window__dot--green { background-color: #28c840; }

.code-window__title {
  margin-left: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
}

.code-window__body {
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--text-on-dark-muted);
  overflow-x: auto;
}

.code-window pre {
  margin: 0;
  padding: 0;
  background: transparent;
}

/* Syntax coloring */
.token-key { color: var(--accent); }
.token-string { color: var(--color-success); }
.token-error { color: var(--color-danger); }
.token-muted { color: rgba(255, 255, 255, 0.35); }
.token-warning { color: var(--color-warning); }

/* ========================================================================
 * FORMS - for dark backgrounds
 * ======================================================================== */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-on-dark);
}

.form-input,
.form-select,
.form-textarea {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-on-dark);
  transition:
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
  background-color: rgba(255, 255, 255, 0.08);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.5)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-10);
}

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

/* Validation states */
.form-input--error,
.form-select.form-input--error {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.15);
}

.form-input--valid,
.form-select.form-input--valid {
  border-color: var(--color-success);
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.1);
}

.form-error {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-danger);
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.2);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  margin-top: var(--space-2);
}

/* ========================================================================
 * SECTION HEADERS
 * ======================================================================== */

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-16);
}

.section-header__eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  color: var(--color-success);
  margin-bottom: var(--space-4);
}

.section-header__title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.section-header__subtitle {
  font-size: var(--text-lg);
  color: var(--text-on-dark-muted);
  line-height: var(--leading-relaxed);
}

/* Light variant section headers */
.section--light .section-header__eyebrow {
  color: var(--dusk-blue);
}

.section--light .section-header__title {
  color: var(--text-on-light);
}

.section--light .section-header__subtitle {
  color: var(--text-on-light-muted);
}

/* ========================================================================
 * TIMELINE / STEPPER
 * ======================================================================== */

.timeline {
  display: flex;
  justify-content: space-between;
  position: relative;
  padding: 0 var(--space-4);
}

/* Connecting line behind steps */
.timeline::before {
  content: '';
  position: absolute;
  top: 1.5rem;
  left: calc(12.5% + var(--space-4));
  right: calc(12.5% + var(--space-4));
  height: 2px;
  background: linear-gradient(90deg, var(--dusk-blue), var(--color-success), var(--dusk-blue));
  opacity: 0.3;
}

.timeline__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex: 1;
  position: relative;
  z-index: 1;
}

.timeline__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--ink-black);
  background: linear-gradient(135deg, var(--color-success), var(--cta-hover));
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
  box-shadow: 0 4px 15px rgba(52, 211, 153, 0.3);
}

.timeline__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--text-heading);
  margin-bottom: var(--space-1);
}

.timeline__meta {
  font-size: var(--text-xs);
  color: var(--color-success);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-2);
}

.timeline__description {
  font-size: var(--text-sm);
  color: var(--text-on-dark-muted);
  max-width: 180px;
}

/* ========================================================================
 * STAT DISPLAY
 * ======================================================================== */

.stat {
  text-align: center;
}

.stat__value {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--text-heading);
  line-height: var(--leading-none);
  font-variant-numeric: tabular-nums;
}

.stat__label {
  font-size: var(--text-sm);
  color: var(--text-on-dark-muted);
  margin-top: var(--space-1);
}

/* Counter animation states */
.stat__value.is-counting {
  text-shadow: 0 0 20px currentColor;
}

.stat__value.count-complete {
  animation: countPop 0.3s var(--ease-out);
}

@keyframes countPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

/* ========================================================================
 * CHECKLIST
 * ======================================================================== */

.checklist {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.checklist__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-lg);
  color: var(--text-on-dark);
}

.checklist__icon {
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  color: var(--color-success);
  margin-top: 0.15em;
}