/* ==========================================================================
   NexTool Revolution — Component Library
   Every component: intentional, minimal, premium.
   ========================================================================== */


/* --------------------------------------------------------------------------
   BUTTONS — The primary interaction element
   -------------------------------------------------------------------------- */

.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-sans);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  line-height: 1;
  white-space: nowrap;
  border-radius: var(--radius-lg);
  transition:
    background var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out),
    opacity var(--duration-fast) var(--ease-out);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

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

.btn:disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* Primary — The main CTA. Gradient, glow, demands attention. */
.btn--primary {
  background: var(--accent-gradient);
  color: #fff;
  font-weight: var(--weight-semibold);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
  background: var(--accent-gradient-hover);
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-1px);
}

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

/* Secondary — Glass morphism, subtle, supportive. */
.btn--secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.btn--secondary:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-default);
}

/* Ghost — Barely there, for tertiary actions. */
.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: var(--space-2) var(--space-4);
}

.btn--ghost:hover {
  color: var(--text-primary);
  background: var(--bg-glass);
}

/* Accent text — Link-style button */
.btn--link {
  background: transparent;
  color: var(--accent);
  padding: 0;
  font-weight: var(--weight-medium);
}

.btn--link:hover {
  color: var(--accent-light);
}

/* Size variants */
.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  border-radius: var(--radius-md);
}

.btn--lg {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-lg);
  border-radius: var(--radius-xl);
}

/* Icon inside button */
.btn__icon {
  width: 1.25em;
  height: 1.25em;
  flex-shrink: 0;
}

/* Icon-only button */
.btn--icon {
  padding: var(--space-3);
  border-radius: var(--radius-md);
}


/* --------------------------------------------------------------------------
   NAVIGATION — Transparent, then glass on scroll
   -------------------------------------------------------------------------- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: var(--space-4) 0;
  transition:
    background var(--duration-normal) var(--ease-out),
    backdrop-filter var(--duration-normal) var(--ease-out),
    padding var(--duration-normal) var(--ease-out),
    border-color var(--duration-normal) var(--ease-out);
}

.nav--scrolled {
  background: rgba(10, 10, 10, 0.80);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width-wide);
  margin-inline: auto;
  padding-inline: var(--content-padding);
}

.nav__logo {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--text-primary);
  letter-spacing: var(--tracking-tight);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav__logo-mark {
  width: 28px;
  height: 28px;
  background: var(--accent-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  transition: color var(--duration-fast) var(--ease-out);
  position: relative;
}

.nav__link:hover {
  color: var(--text-primary);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--duration-normal) var(--ease-out);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__cta {
  margin-left: var(--space-4);
}

/* Mobile nav toggle */
.nav__toggle {
  display: none;
  width: 24px;
  height: 24px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav__toggle-line {
  width: 100%;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: 1px;
  transition:
    transform var(--duration-normal) var(--ease-out),
    opacity var(--duration-fast) var(--ease-out);
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .nav__links--open {
    display: flex;
    flex-direction: column;
    position: fixed;
    inset: 0;
    top: 64px;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    padding: var(--space-8) var(--content-padding);
    gap: var(--space-6);
    z-index: var(--z-overlay);
  }

  .nav__links--open .nav__link {
    font-size: var(--text-xl);
    color: var(--text-primary);
  }

  .nav__toggle {
    display: flex;
  }

  .nav__cta--desktop {
    display: none;
  }
}

/* Mobile menu overlay */
.nav__mobile {
  display: none;
  flex-direction: column;
  position: fixed;
  inset: 0;
  top: 64px;
  background: rgba(10, 10, 10, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding: var(--space-10) var(--content-padding);
  gap: var(--space-2);
  z-index: var(--z-overlay);
}

.nav__mobile.active {
  display: flex;
}

.nav__mobile-link {
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border-subtle);
  transition: color var(--duration-fast) var(--ease-out);
}

.nav__mobile-link:hover {
  color: var(--text-primary);
}

.nav__mobile-cta {
  margin-top: var(--space-6);
  text-align: center;
  font-size: var(--text-lg);
  padding: var(--space-4) var(--space-6);
}

/* Hamburger → X animation */
.nav__toggle.active .nav__toggle-line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav__toggle.active .nav__toggle-line:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active .nav__toggle-line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}


/* --------------------------------------------------------------------------
   CARDS — Elevated surfaces with purpose
   -------------------------------------------------------------------------- */

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition:
    border-color var(--duration-normal) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out),
    transform var(--duration-normal) var(--ease-out);
}

.card:hover {
  border-color: var(--border-default);
  box-shadow: var(--shadow-md);
}

/* Interactive card — for categories, features */
.card--interactive {
  cursor: pointer;
}

.card--interactive:hover {
  border-color: var(--border-active);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Glass card — for overlays, floating elements */
.card--glass {
  background: var(--bg-glass);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
}

/* Highlighted card — for "recommended" pricing tier */
.card--highlight {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
  position: relative;
}

.card--highlight::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: var(--accent-gradient);
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}


/* --------------------------------------------------------------------------
   FORM ELEMENTS — Clean, clear, functional
   -------------------------------------------------------------------------- */

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

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

.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--text-base);
  transition:
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    background var(--duration-fast) var(--ease-out);
}

.input::placeholder {
  color: var(--text-muted);
}

.input:hover {
  border-color: var(--border-default);
  background: var(--bg-quaternary);
}

.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: var(--bg-quaternary);
}

/* Large input — for hero search */
.input--lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-lg);
  border-radius: var(--radius-lg);
}

/* Input with icon */
.input-wrapper {
  position: relative;
}

.input-wrapper .input {
  padding-left: var(--space-10);
}

.input-wrapper__icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--text-tertiary);
  pointer-events: none;
}

/* Textarea */
.textarea {
  min-height: 120px;
  resize: vertical;
}

/* Select */
.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='rgba(255,255,255,0.4)' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 6l3.5 4 3.5-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-8);
}


/* --------------------------------------------------------------------------
   BADGES & TAGS
   -------------------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  border-radius: var(--radius-full);
  background: var(--accent-surface);
  color: var(--accent-light);
  border: 1px solid rgba(99, 91, 255, 0.15);
}

.badge--success {
  background: var(--success-surface);
  color: var(--success);
  border-color: rgba(0, 200, 83, 0.15);
}

.badge--neutral {
  background: var(--bg-glass);
  color: var(--text-secondary);
  border-color: var(--border-subtle);
}


/* --------------------------------------------------------------------------
   DIVIDER — Subtle separation
   -------------------------------------------------------------------------- */

.divider {
  width: 100%;
  height: 1px;
  background: var(--border-subtle);
  border: none;
}

.divider--gradient {
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--border-default) 50%,
    transparent 100%
  );
}


/* --------------------------------------------------------------------------
   TOOLTIP
   -------------------------------------------------------------------------- */

[data-tooltip] {
  position: relative;
}

[data-tooltip]::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  color: var(--text-primary);
  background: var(--bg-quaternary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
  z-index: var(--z-toast);
}

[data-tooltip]:hover::before {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}


/* --------------------------------------------------------------------------
   FOOTER — Clean, informative, not an afterthought
   -------------------------------------------------------------------------- */

.footer {
  padding: var(--space-16) 0 var(--space-8);
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-void);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

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

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  max-width: 300px;
  line-height: var(--leading-relaxed);
}

.footer__col-title {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

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

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

.footer__link:hover {
  color: var(--text-primary);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-subtle);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  .footer__brand {
    grid-column: 1 / -1;
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}


/* --------------------------------------------------------------------------
   PRICING CARD — Special treatment
   -------------------------------------------------------------------------- */

.pricing-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding: var(--space-8);
  transition: transform var(--duration-normal) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out);
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.card--highlight.pricing-card:hover {
  box-shadow: 0 0 40px rgba(99, 91, 255, 0.15), 0 0 80px rgba(0, 212, 255, 0.06);
}

.pricing-card__tier {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-caps);
  color: var(--text-tertiary);
}

.pricing-card__price {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
}

.pricing-card__amount {
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  color: var(--text-primary);
  letter-spacing: var(--tracking-tight);
  line-height: 1;
}

.pricing-card__period {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

.pricing-card__description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.pricing-card__features {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex-grow: 1;
}

.pricing-card__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.pricing-card__feature-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--success);
  margin-top: 1px;
}

.pricing-card__feature--locked {
  color: var(--text-muted);
}

.pricing-card__feature--locked .pricing-card__feature-icon {
  color: var(--text-muted);
}


/* --------------------------------------------------------------------------
   FAQ ACCORDION
   -------------------------------------------------------------------------- */

.faq-item {
  border-bottom: 1px solid var(--border-subtle);
}

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-5) 0;
  font-size: var(--text-lg);
  font-weight: var(--weight-medium);
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-out);
}

.faq-item__question:hover {
  color: var(--accent-light);
}

.faq-item__icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--text-tertiary);
  transition: transform var(--duration-normal) var(--ease-out);
}

.faq-item--open .faq-item__icon {
  transform: rotate(45deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--ease-out);
}

.faq-item--open .faq-item__answer {
  max-height: 500px;
}

.faq-item__answer-inner {
  padding-bottom: var(--space-6);
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}


/* --------------------------------------------------------------------------
   LOADING / SKELETON
   -------------------------------------------------------------------------- */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-tertiary) 25%,
    var(--bg-quaternary) 50%,
    var(--bg-tertiary) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite ease-in-out;
  border-radius: var(--radius-md);
}

@keyframes skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}


/* --------------------------------------------------------------------------
   CATEGORY CHIPS — For task selection
   -------------------------------------------------------------------------- */

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition:
    background 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);
  user-select: none;
}

.chip:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-default);
  color: var(--text-primary);
}

.chip--active {
  background: var(--accent-surface);
  border-color: var(--border-accent);
  color: var(--accent-light);
  box-shadow: 0 0 12px var(--accent-glow);
}

.chip__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}


/* --------------------------------------------------------------------------
   PROGRESS BAR — For wizard steps
   -------------------------------------------------------------------------- */

.progress {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
}

.progress__step {
  flex: 1;
  height: 3px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  transition: background var(--duration-normal) var(--ease-out);
}

.progress__step--active {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

.progress__step--complete {
  background: var(--accent);
}


/* --------------------------------------------------------------------------
   COUNTER / STAT
   -------------------------------------------------------------------------- */

.stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  text-align: center;
}

.stat__number {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--text-primary);
  letter-spacing: var(--tracking-tight);
  line-height: 1;
}

.stat__label {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}


/* --------------------------------------------------------------------------
   TRUST BADGES — Model logos, partnerships
   -------------------------------------------------------------------------- */

.trust-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  flex-wrap: wrap;
  opacity: 0.5;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.trust-row:hover {
  opacity: 0.7;
}

.trust-row__item {
  height: 24px;
  filter: brightness(0) invert(1);
  opacity: 0.6;
}