/* ============================================================
   solutions.css — Shared styles for all Solutions pages
   AI Tools Magic · Clean SaaS UI (Notion / Stripe style)
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* ── Design Tokens (mirrored from global.css) ─────────────── */
:root {
  --sol-primary:        #6366f1;
  --sol-primary-dark:   #4f46e5;
  --sol-primary-light:  #818cf8;
  --sol-accent:         #10b981;
  --sol-secondary:      #f59e0b;

  --sol-bg:             #f3f4f8;
  --sol-surface:        #ffffff;
  --sol-surface-alt:    #fafbff;
  --sol-border:         #e5e7eb;
  --sol-border-light:   #f0f0f6;

  --sol-text:           #111827;
  --sol-text-sec:       #6b7280;
  --sol-text-muted:     #9ca3af;
  --sol-text-inv:       #ffffff;

  --sol-grad-primary:   linear-gradient(135deg, #6366f1, #8b5cf6);
  --sol-grad-cta:       linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
  --sol-grad-hero:      linear-gradient(135deg, #667eea 0%, #764ba2 100%);

  --sol-shadow-sm:      0 2px 8px rgba(0,0,0,.06);
  --sol-shadow-md:      0 4px 20px rgba(0,0,0,.08);
  --sol-shadow-lg:      0 8px 40px rgba(0,0,0,.12);
  --sol-shadow-card:    0 2px 16px rgba(99,102,241,.08);
  --sol-shadow-hover:   0 8px 32px rgba(99,102,241,.18);

  --sol-radius-sm:      8px;
  --sol-radius-md:      12px;
  --sol-radius-lg:      16px;
  --sol-radius-xl:      20px;
  --sol-radius-full:    9999px;

  --sol-font-sans:  'Inter', 'Plus Jakarta Sans', system-ui, sans-serif;
  --sol-font-disp:  'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;

  --sol-container:  1200px;
  --sol-transition: 250ms cubic-bezier(0.4,0,0.2,1);
}

/* ── Base Reset (scoped to solutions) ─────────────────────── */
.sol-page {
  font-family: var(--sol-font-sans);
  background: var(--sol-bg);
  color: var(--sol-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ── Container ────────────────────────────────────────────── */
.sol-container {
  width: 100%;
  max-width: var(--sol-container);
  margin-inline: auto;
  padding-inline: 24px;
}

/* ── Shared Section Spacing ───────────────────────────────── */
.sol-section {
  padding-block: 80px;
}

.sol-section--alt {
  background: var(--sol-surface);
}

.sol-section--dark {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
  color: var(--sol-text-inv);
}

/* ── Section Header ───────────────────────────────────────── */
.sol-section-header {
  text-align: center;
  margin-bottom: 56px;
}

.sol-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sol-primary);
  background: rgba(99,102,241,.08);
  padding: 6px 14px;
  border-radius: var(--sol-radius-full);
  margin-bottom: 16px;
}

.sol-section--dark .sol-eyebrow {
  background: rgba(255,255,255,.12);
  color: #c7d2fe;
}

.sol-heading {
  font-family: var(--sol-font-disp);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--sol-text);
  margin-bottom: 16px;
}

.sol-section--dark .sol-heading {
  color: var(--sol-text-inv);
}

.sol-heading .highlight {
  background: var(--sol-grad-cta);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sol-subtext {
  font-size: 1.0625rem;
  color: var(--sol-text-sec);
  max-width: 600px;
  margin-inline: auto;
  line-height: 1.75;
}

.sol-section--dark .sol-subtext {
  color: #c7d2fe;
}

/* ── Buttons ──────────────────────────────────────────────── */
.sol-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--sol-radius-md);
  font-family: var(--sol-font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--sol-transition);
  border: none;
  cursor: pointer;
}

.sol-btn--primary {
  background: var(--sol-grad-primary);
  color: var(--sol-text-inv);
  box-shadow: 0 4px 16px rgba(99,102,241,.35);
}

.sol-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(99,102,241,.45);
}

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

.sol-btn--outline {
  border: 2px solid var(--sol-primary);
  color: var(--sol-primary);
  background: transparent;
}

.sol-btn--outline:hover {
  background: var(--sol-primary);
  color: var(--sol-text-inv);
  transform: translateY(-2px);
}

.sol-btn--outline-white {
  border: 2px solid rgba(255,255,255,.6);
  color: var(--sol-text-inv);
  background: transparent;
}

.sol-btn--outline-white:hover {
  background: rgba(255,255,255,.12);
  border-color: #fff;
}

.sol-btn--lg {
  padding: 16px 40px;
  font-size: 1rem;
  border-radius: var(--sol-radius-lg);
}

/* ── Hero Section ─────────────────────────────────────────── */
.sol-hero {
  position: relative;
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 60%, #4c1d95 100%);
  color: var(--sol-text-inv);
  padding-block: 100px 80px;
  overflow: hidden;
}

.sol-hero__orbs {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.sol-hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
}

.sol-hero__orb--1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #6366f1, transparent);
  top: -120px;
  right: -100px;
}

.sol-hero__orb--2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #ec4899, transparent);
  bottom: -100px;
  left: -80px;
}

.sol-hero__orb--3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, #8b5cf6, transparent);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.sol-hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.sol-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #c7d2fe;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.15);
  padding: 6px 16px;
  border-radius: var(--sol-radius-full);
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.sol-hero__title {
  font-family: var(--sol-font-disp);
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--sol-text-inv);
  margin-bottom: 20px;
}

.sol-hero__title .highlight {
  background: linear-gradient(90deg, #a5b4fc, #c084fc, #f9a8d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sol-hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.1875rem);
  color: #c7d2fe;
  margin-bottom: 40px;
  line-height: 1.75;
  max-width: 620px;
  margin-inline: auto;
  margin-bottom: 40px;
}

.sol-hero__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ── Problem Section ──────────────────────────────────────── */
.sol-problems {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.sol-problem-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--sol-surface);
  border: 1px solid var(--sol-border);
  border-radius: var(--sol-radius-lg);
  padding: 24px;
  box-shadow: var(--sol-shadow-sm);
  transition: transform var(--sol-transition), box-shadow var(--sol-transition);
}

.sol-problem-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--sol-shadow-md);
}

.sol-problem-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  background: rgba(239,68,68,.08);
  border-radius: var(--sol-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.sol-problem-item h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--sol-text);
  margin-bottom: 4px;
}

.sol-problem-item p {
  font-size: 0.875rem;
  color: var(--sol-text-sec);
  line-height: 1.6;
}

/* ── Solution Cards ───────────────────────────────────────── */
.sol-how-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.sol-how-card {
  background: var(--sol-surface);
  border: 1px solid var(--sol-border-light);
  border-radius: var(--sol-radius-lg);
  padding: 32px 28px;
  box-shadow: var(--sol-shadow-card);
  position: relative;
  overflow: hidden;
  transition: transform var(--sol-transition), box-shadow var(--sol-transition);
}

.sol-how-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--sol-grad-primary);
}

.sol-how-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sol-shadow-hover);
}

.sol-how-card__num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--sol-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.sol-how-card__icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}

.sol-how-card h3 {
  font-family: var(--sol-font-disp);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--sol-text);
  margin-bottom: 10px;
}

.sol-how-card p {
  font-size: 0.9rem;
  color: var(--sol-text-sec);
  line-height: 1.65;
}

/* ── Feature Cards ────────────────────────────────────────── */
.sol-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.sol-feature-card {
  background: var(--sol-surface);
  border: 1px solid var(--sol-border);
  border-radius: var(--sol-radius-lg);
  padding: 28px 24px;
  box-shadow: var(--sol-shadow-sm);
  transition: transform var(--sol-transition), box-shadow var(--sol-transition), border-color var(--sol-transition);
}

.sol-feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sol-shadow-hover);
  border-color: rgba(99,102,241,.25);
}

.sol-feature-card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--sol-radius-md);
  background: rgba(99,102,241,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.sol-feature-card h3 {
  font-family: var(--sol-font-disp);
  font-size: 1rem;
  font-weight: 700;
  color: var(--sol-text);
  margin-bottom: 10px;
}

.sol-feature-card p {
  font-size: 0.875rem;
  color: var(--sol-text-sec);
  line-height: 1.65;
}

.sol-feature-card__tag {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--sol-primary);
  background: rgba(99,102,241,.08);
  padding: 3px 10px;
  border-radius: var(--sol-radius-full);
}

/* ── Use Cases ────────────────────────────────────────────── */
.sol-usecases-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.sol-usecase-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--sol-surface);
  border: 1px solid var(--sol-border);
  border-radius: var(--sol-radius-md);
  padding: 18px 20px;
  transition: transform var(--sol-transition), box-shadow var(--sol-transition), border-color var(--sol-transition);
}

.sol-usecase-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--sol-shadow-sm);
  border-color: rgba(99,102,241,.3);
}

.sol-usecase-item__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--sol-grad-primary);
  flex-shrink: 0;
}

.sol-usecase-item span {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--sol-text);
}

/* ── CTA Section ──────────────────────────────────────────── */
.sol-cta {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 60%, #4c1d95 100%);
  color: var(--sol-text-inv);
  padding-block: 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.sol-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='28'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
  pointer-events: none;
}

.sol-cta__inner {
  position: relative;
  z-index: 1;
}

.sol-cta h2 {
  font-family: var(--sol-font-disp);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--sol-text-inv);
  margin-bottom: 16px;
}

.sol-cta p {
  font-size: 1.0625rem;
  color: #c7d2fe;
  max-width: 520px;
  margin-inline: auto;
  margin-bottom: 36px;
  line-height: 1.75;
}

.sol-cta__buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.sol-btn--cta {
  background: #ffffff;
  color: var(--sol-primary-dark);
  font-weight: 700;
  box-shadow: 0 8px 32px rgba(0,0,0,.25);
}

.sol-btn--cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,.35);
}

/* ── Solutions Nav (sibling pages) ────────────────────────── */
.sol-nav-strip {
  background: var(--sol-surface);
  border-bottom: 1px solid var(--sol-border-light);
  padding-block: 0;
  position: sticky;
  top: 72px;
  z-index: 500;
  box-shadow: var(--sol-shadow-sm);
}

.sol-nav-strip__inner {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  padding-block: 12px;
  scrollbar-width: none;
}

.sol-nav-strip__inner::-webkit-scrollbar { display: none; }

.sol-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--sol-radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--sol-text-sec);
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--sol-transition);
  flex-shrink: 0;
}

.sol-nav-link:hover {
  color: var(--sol-primary);
  background: rgba(99,102,241,.06);
}

.sol-nav-link.active {
  background: rgba(99,102,241,.1);
  color: var(--sol-primary);
  font-weight: 600;
}

/* ── Solutions Overview (index page) ──────────────────────── */
.sol-overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.sol-overview-card {
  display: block;
  background: var(--sol-surface);
  border: 1px solid var(--sol-border);
  border-radius: var(--sol-radius-lg);
  padding: 36px 30px;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--sol-shadow-card);
  transition: transform var(--sol-transition), box-shadow var(--sol-transition), border-color var(--sol-transition);
  position: relative;
  overflow: hidden;
}

.sol-overview-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--sol-grad-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--sol-transition);
}

.sol-overview-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--sol-shadow-hover);
  border-color: rgba(99,102,241,.25);
}

.sol-overview-card:hover::after {
  transform: scaleX(1);
}

.sol-overview-card__emoji {
  font-size: 2.5rem;
  margin-bottom: 20px;
  display: block;
}

.sol-overview-card__title {
  font-family: var(--sol-font-disp);
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--sol-text);
  margin-bottom: 10px;
}

.sol-overview-card__desc {
  font-size: 0.9125rem;
  color: var(--sol-text-sec);
  line-height: 1.65;
  margin-bottom: 20px;
}

.sol-overview-card__arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--sol-primary);
  transition: gap var(--sol-transition);
}

.sol-overview-card:hover .sol-overview-card__arrow {
  gap: 10px;
}

/* ── Divider ──────────────────────────────────────────────── */
.sol-divider {
  width: 48px;
  height: 3px;
  background: var(--sol-grad-primary);
  border-radius: var(--sol-radius-full);
  margin: 16px auto 0;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .sol-section { padding-block: 56px; }
  .sol-hero { padding-block: 72px 56px; }
  .sol-cta { padding-block: 56px; }
  .sol-hero__cta { flex-direction: column; align-items: stretch; }
  .sol-cta__buttons { flex-direction: column; align-items: stretch; }
  .sol-btn { justify-content: center; }
  .sol-section-header { margin-bottom: 36px; }
}

@media (max-width: 480px) {
  .sol-container { padding-inline: 16px; }
  .sol-hero { padding-block: 56px 40px; }
  .sol-section { padding-block: 40px; }
  .sol-problems,
  .sol-how-grid,
  .sol-features-grid,
  .sol-usecases-list { gap: 12px; }
}

/* ── Fade-up animation (uses global.js observer) ──────────── */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}