/**
 * Da'at Tec — Components
 * Modern product UI: buttons, cards, forms, navigation, badges
 */

/* ——— Buttons ——— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 3rem;
  padding: 0.8rem 1.4rem;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  letter-spacing: 0.01em;
  text-align: center;
  border-radius: var(--radius-full);
  border: var(--border-width) solid transparent;
  transition:
    background-color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: linear-gradient(180deg, var(--color-accent-light) 0%, var(--color-accent) 100%);
  color: #1A1405;
  border-color: transparent;
  box-shadow: 0 8px 24px rgba(229, 185, 60, 0.22);
}

.btn-primary:hover {
  background: linear-gradient(180deg, #f5d36a 0%, var(--color-accent-light) 100%);
  box-shadow: 0 10px 28px rgba(229, 185, 60, 0.32);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.btn-secondary:hover {
  background-color: var(--overlay-medium);
  border-color: var(--color-border-strong);
}

.btn-ghost {
  background-color: var(--btn-ghost-bg);
  color: var(--color-text);
  border-color: var(--color-border-strong);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  background-color: var(--btn-ghost-bg-hover);
  border-color: var(--color-border-strong);
}

.btn-on-dark {
  background-color: #fff;
  color: var(--color-text-inverse);
  border-color: #fff;
}

.btn-on-dark:hover {
  background-color: #f0f2f5;
}

.btn-lg {
  min-height: 3.35rem;
  padding: 0.95rem 1.75rem;
  font-size: var(--text-base);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.section--light .btn-secondary {
  color: var(--color-text-on-light);
  border-color: var(--color-border-light);
}

.section--light .btn-secondary:hover {
  background: var(--color-surface);
  border-color: var(--color-border-strong);
}

/* Light-theme adjustments for ghost buttons on dark bands */
[data-theme="light"] .hero .btn-ghost,
[data-theme="light"] .cta-band .btn-ghost {
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

/* ——— Cards ——— */
.card {
  background-color: var(--color-surface-elevated);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  min-height: 16rem;
  transition:
    border-color var(--duration-base) var(--ease-out),
    background-color var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
}

.card:hover {
  border-color: rgba(229, 185, 60, 0.28);
  background-color: var(--color-surface-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.25rem;
  height: 3.25rem;
  margin-bottom: var(--space-6);
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border: 1px solid rgba(229, 185, 60, 0.2);
  border-radius: var(--radius-lg);
}

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

.card__title {
  margin-bottom: var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  line-height: var(--leading-snug);
}

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

.card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
  transition: gap var(--duration-fast) var(--ease-out);
}

.card__link:hover {
  gap: var(--space-3);
}

.card__link svg {
  width: 1rem;
  height: 1rem;
}

.service-card,
.solution-card {
  height: 100%;
  min-height: 18rem;
  display: flex;
  flex-direction: column;
}

.service-card .card__body,
.solution-card .card__body {
  flex: 1;
}

@media (min-width: 768px) {
  .service-card,
  .solution-card {
    min-height: 20rem;
    padding: var(--space-12);
  }
}

.feature-tile {
  padding: var(--space-7, var(--space-6));
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, transparent 100%),
    var(--color-surface-elevated);
}

.feature-tile__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-3);
}

.feature-tile__body {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted);
}

.principle-card {
  padding: var(--space-6) 0;
  border-top: var(--border-width) solid var(--color-border);
}

.principle-card__number {
  display: block;
  margin-bottom: var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-wider);
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.principle-card__title {
  margin-bottom: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.principle-card__body {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted);
}

/* ——— Metric strip ——— */
.metric {
  padding: var(--space-6) 0;
}

.metric__number {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-wider);
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.metric__label {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  line-height: var(--leading-snug);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.7rem;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.02em;
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
  border: 1px solid rgba(229, 185, 60, 0.2);
  border-radius: var(--radius-full);
}

.badge--neutral {
  color: var(--color-text-muted);
  background-color: var(--overlay-soft);
  border-color: var(--color-border);
}

.tech-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.85rem;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  background-color: var(--overlay-soft);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-full);
}

.tech-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ——— Forms ——— */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.form-row {
  display: grid;
  gap: var(--space-6);
}

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

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

.form-label .required {
  color: var(--color-error);
  margin-left: var(--space-1);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  min-height: 3rem;
  padding: 0.7rem 0.95rem;
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--form-bg);
  border: var(--border-width) 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),
    background-color var(--duration-fast) var(--ease-out);
}

.form-select option {
  background-color: var(--color-surface-elevated);
  color: var(--color-text);
}

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

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--color-border-strong);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-focus);
  outline: none;
  background-color: var(--form-bg-focus);
}

.form-input.is-invalid,
.form-select.is-invalid,
.form-textarea.is-invalid {
  border-color: var(--color-error);
}

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

.form-error.is-visible {
  display: block;
}

.form-hint {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.form-success {
  display: none;
  padding: var(--space-6);
  background-color: var(--color-success-bg);
  border: var(--border-width) solid rgba(61, 220, 151, 0.35);
  border-radius: var(--radius-lg);
  color: var(--color-success);
}

.form-success.is-visible {
  display: block;
}

.form-success__title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
}

.form-success__body {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted);
}

/* ——— Header / Navigation ——— */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  height: var(--header-height);
  background-color: var(--header-bg);
  border-bottom: var(--border-width) solid transparent;
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  transition:
    height var(--duration-base) var(--ease-out),
    background-color var(--duration-base) var(--ease-out),
    border-color var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
}

.site-header.is-scrolled {
  height: var(--header-height-scrolled);
  background-color: var(--header-bg-scrolled);
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-xs);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-6);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-full);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  background: var(--btn-ghost-bg);
  transition:
    background-color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.theme-toggle:hover {
  background: var(--btn-ghost-bg-hover);
  border-color: var(--color-border-strong);
}

.theme-toggle:active {
  transform: scale(0.96);
}

.theme-toggle__icon {
  width: 1.15rem;
  height: 1.15rem;
}

.theme-toggle__icon--sun {
  display: var(--theme-icon-sun-display);
}

.theme-toggle__icon--moon {
  display: var(--theme-icon-moon-display);
}

.logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  line-height: 0;
}

.logo__image {
  display: block;
  height: 2.1rem;
  width: auto;
  max-width: 11rem;
}

.site-header.is-scrolled .logo__image {
  height: 1.85rem;
}

.logo--inverse {
  padding: var(--space-2) var(--space-3);
  background-color: var(--logo-footer-bg);
  border-radius: var(--radius-md);
}

.logo--inverse .logo__image {
  height: 1.75rem;
}

.nav {
  display: none;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  position: relative;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  transition:
    color var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out);
}

.nav-link:hover {
  color: var(--color-text);
  background-color: var(--overlay-medium);
}

.nav-link.is-active {
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.nav-link.is-active:not(.nav-link--cta)::after {
  content: "";
  position: absolute;
  left: 0.75rem;
  right: 0.75rem;
  bottom: 0.15rem;
  height: 2px;
  border-radius: 2px;
  background: var(--color-accent);
}

.nav-link--cta.is-active {
  box-shadow: 0 0 0 2px rgba(229, 185, 60, 0.35);
}

.nav-mobile__link.is-active {
  color: var(--color-accent);
  font-weight: var(--font-weight-semibold);
  text-decoration: underline;
  text-underline-offset: 0.3em;
  text-decoration-thickness: 2px;
}

.nav-link--cta {
  margin-left: var(--space-2);
  padding: 0.55rem 1.1rem;
  color: #1A1405;
  background: linear-gradient(180deg, var(--color-accent-light), var(--color-accent));
}

.nav-link--cta:hover {
  color: #1A1405;
  background: linear-gradient(180deg, #f5d36a, var(--color-accent-light));
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: background-color var(--duration-fast) var(--ease-out);
}

.nav-toggle:hover {
  background-color: var(--overlay-medium);
}

.nav-toggle__icon {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 1.25rem;
}

.nav-toggle__icon span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: currentColor;
  border-radius: 1px;
  transition:
    transform var(--duration-base) var(--ease-out),
    opacity var(--duration-base) var(--ease-out);
  transform-origin: center;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-mobile {
  position: fixed;
  inset: var(--header-height) 0 0 0;
  z-index: var(--z-overlay);
  display: flex;
  flex-direction: column;
  padding: var(--space-6) var(--container-padding);
  background-color: var(--nav-mobile-bg);
  border-top: var(--border-width) solid var(--color-border);
  transform: translateX(100%);
  visibility: hidden;
  transition:
    transform var(--duration-slow) var(--ease-out),
    visibility var(--duration-slow) var(--ease-out);
  overflow-y: auto;
}

.nav-mobile.is-open {
  transform: translateX(0);
  visibility: visible;
}

body.is-header-scrolled .nav-mobile {
  top: var(--header-height-scrolled);
}

.nav-mobile__link {
  display: block;
  padding: var(--space-4) 0;
  font-size: var(--text-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  border-bottom: var(--border-width) solid var(--color-border-subtle);
}

.nav-mobile__link.is-active {
  color: var(--color-accent);
  font-weight: var(--font-weight-semibold);
  text-decoration: underline;
  text-underline-offset: 0.3em;
  text-decoration-thickness: 2px;
}

.nav-mobile__cta {
  margin-top: var(--space-8);
}

body.nav-open {
  overflow: hidden;
}

/* ——— Footer ——— */
.site-footer {
  background-color: var(--color-surface-dark);
  color: var(--footer-text);
  padding-block: var(--space-16) var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.site-footer__brand-text {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  max-width: 16rem;
}

.site-footer__heading {
  margin-bottom: var(--space-4);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--footer-heading);
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.site-footer__link {
  font-size: var(--text-sm);
  color: var(--footer-text);
  transition: color var(--duration-fast) var(--ease-out);
}

.site-footer__link:hover {
  color: var(--footer-heading);
}

.site-footer__bottom {
  padding-top: var(--space-8);
  border-top: var(--border-width) solid rgba(255, 255, 255, 0.08);
  font-size: var(--text-sm);
}

/* ——— Page hero (inner pages) ——— */
.page-hero {
  padding-block: var(--space-20) var(--space-14, var(--space-12));
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(229, 185, 60, 0.12), transparent 55%),
    radial-gradient(ellipse 60% 50% at 90% 20%, rgba(91, 141, 239, 0.1), transparent 50%),
    var(--color-surface);
  border-bottom: var(--border-width) solid var(--color-border);
}

.page-hero .heading-xl {
  max-width: 16ch;
}

.page-hero .lead {
  max-width: 40rem;
}