/* ============================================================
   M's Studio — base layout & components
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; }

h1, h2, h3 { margin: 0; font-weight: 700; }

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: 4px;
}

.wrap {
  max-width: var(--page-max-width);
  margin-inline: auto;
  padding-inline: var(--page-padding-desktop);
}
@media (max-width: 1023px) {
  .wrap { padding-inline: var(--page-padding-tablet); }
}
@media (max-width: 767px) {
  .wrap { padding-inline: var(--page-padding-mobile); }
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 22px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, transform 0.18s ease, opacity 0.18s ease;
  white-space: nowrap;
}
.btn svg { flex: none; }
.btn-dark {
  background: var(--button-dark);
  color: var(--text-on-dark);
}
.btn-dark:hover { background: var(--button-dark-hover); }
.btn-outline {
  background: #ffffff;
  color: var(--text-primary);
  border-color: var(--border-medium);
}
.btn-outline:hover { border-color: var(--text-secondary); }
.btn-sm { height: 40px; padding: 0 16px; font-size: 14px; }
.btn[disabled],
.btn.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
}

/* ---------- Scroll reveal (generic — placed early so component :hover
   rules further down the file win the cascade for shared props like
   transform/border-color once an element has settled into .is-in) ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.32s ease, transform 0.32s ease, border-color 0.18s ease; }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #ffffff;
  border-bottom: 1px solid #eeeeee;
}
.header-inner {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
@media (max-width: 767px) {
  .header-inner { height: 62px; }
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--button-dark);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 15px;
  flex: none;
}
.brand-word {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-desktop a {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.15s ease;
}
.nav-desktop a:hover { color: var(--text-primary); }

.header-right { display: flex; align-items: center; gap: 16px; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  background: none; border: none; cursor: pointer;
  border-radius: 8px;
}
.nav-toggle:hover { background: var(--background-soft); }

@media (max-width: 819px) {
  .nav-desktop { display: none; }
  .nav-toggle { display: flex; }
}

.mobile-menu {
  display: none;
  border-top: 1px solid var(--border-light);
  background: #fff;
}
.mobile-menu.is-open { display: block; }
.mobile-menu .wrap {
  padding-block: 12px;
  display: flex;
  flex-direction: column;
}
.mobile-menu a {
  padding: 14px 4px;
  font-size: 16px;
  font-weight: 500;
  border-bottom: 1px solid var(--border-light);
}
.mobile-menu a:last-of-type { border-bottom: none; }
.mobile-menu .btn { margin-top: 14px; width: 100%; }

/* ---------- Hero ---------- */
.hero {
  padding-top: clamp(56px, 8vw, 90px);
  padding-bottom: clamp(56px, 8vw, 80px);
}
.hero-grid {
  display: grid;
  grid-template-columns: 38% 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
  min-height: 500px;
}
@media (max-width: 1023px) {
  .hero-grid { grid-template-columns: 1fr; min-height: auto; }
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-soft);
  color: var(--primary-hover);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
}

.hero-title {
  margin-top: 20px;
  font-size: 56px;
  line-height: 1.10;
  font-weight: 750;
  letter-spacing: -1.8px;
  text-wrap: balance;
}
@media (max-width: 767px) {
  .hero-title { font-size: 40px; line-height: 1.12; letter-spacing: -1.3px; }
}
@media (max-width: 389px) {
  .hero-title { font-size: 36px; }
}

.hero-desc {
  margin-top: 20px;
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 46ch;
}

.hero-cta {
  margin-top: 32px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-mockup {
  border: 1px solid #e5e7eb;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  background: var(--background-soft);
}
.hero-mockup img { width: 100%; height: auto; display: block; }
.mockup-placeholder {
  aspect-ratio: 16 / 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--text-muted);
  padding: 24px;
  text-align: center;
}
.mockup-placeholder svg { opacity: 0.55; }
.mockup-placeholder .ph-title { font-size: 14px; font-weight: 600; color: var(--text-secondary); }

/* ---------- Section shell ---------- */
.section { padding-block: clamp(64px, 9vw, 120px); }
.section-tight { padding-block: clamp(64px, 7vw, 100px); }

.eyebrow {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--primary-hover);
  letter-spacing: 0.02em;
}

.section-title {
  margin-top: 10px;
  font-size: 36px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.8px;
  text-wrap: balance;
}
@media (max-width: 767px) {
  .section-title { font-size: 28px; letter-spacing: -0.5px; }
}

.section-desc {
  margin-top: 14px;
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 56ch;
}

.section-head { max-width: 640px; }

/* ---------- Product ---------- */
.product-grid {
  display: grid;
  grid-template-columns: 38% 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
@media (max-width: 1023px) {
  .product-grid { grid-template-columns: 1fr; }
}

.product-title {
  font-size: 32px;
  font-weight: 700;
  margin-top: 6px;
}
.product-tagline {
  margin-top: 14px;
  font-size: 17px;
  line-height: 1.65;
  color: var(--text-secondary);
  white-space: pre-line;
}
.feature-list {
  margin-top: 28px;
  display: grid;
  gap: 14px;
}
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 16px;
  color: var(--text-primary);
}
.feature-item svg { flex: none; margin-top: 3px; color: var(--primary); }

.screenshot-frame {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid #e6e6e6;
  overflow: hidden;
  background: var(--background-soft);
}
.screenshot-frame img { width: 100%; height: auto; display: block; }
.screenshot-frame .mockup-placeholder { aspect-ratio: 16 / 9; }
@media (max-width: 1023px) {
  .screenshot-frame { margin-top: 8px; }
}

/* ---------- Use cases ---------- */
.case-grid {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 1023px) {
  .case-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .case-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
}

.case-card {
  min-height: 150px;
  border: 1px solid #e8e8e8;
  border-radius: 14px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #fff;
}
.case-card:hover { border-color: var(--border-medium); }

.case-icon {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  color: var(--primary);
}
.case-card h3 { font-size: 18px; font-weight: 600; }
.case-card p { margin: 0; font-size: 14.5px; line-height: 1.55; color: var(--text-secondary); flex: 1; }
.case-tag {
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 500;
}

@media (prefers-reduced-motion: reduce) {
  .case-card { opacity: 1; transform: none; transition: none; }
}

/* ---------- How it works ---------- */
.steps-row {
  margin-top: 48px;
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: start;
  gap: 0 20px;
}
@media (max-width: 819px) {
  .steps-row { grid-template-columns: 1fr; gap: 28px; }
}

.step-card { max-width: 320px; }
.step-num {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary-hover);
  display: grid; place-items: center;
  font-weight: 700; font-size: 15px;
}
.step-card h3 { margin-top: 16px; font-size: 18px; font-weight: 600; }
.step-card p { margin: 8px 0 0; font-size: 15px; color: var(--text-secondary); line-height: 1.6; }
.step-example {
  margin-top: 12px;
  font-size: 13.5px;
  color: var(--text-secondary);
  background: var(--background-soft);
  border: 1px dashed var(--border-medium);
  border-radius: 8px;
  padding: 10px 12px;
}

.step-arrow {
  align-self: center;
  color: var(--border-medium);
  padding-top: 10px;
}
@media (max-width: 819px) {
  .step-arrow { transform: rotate(90deg); align-self: flex-start; padding-top: 0; }
}

/* ---------- Mobile apps ---------- */
.app-grid {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 1023px) {
  .app-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .app-grid { grid-template-columns: 1fr; }
}

.app-card {
  border: 1px solid #e7e7e7;
  border-radius: 14px;
  padding: 22px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: #fff;
}
.app-card:hover { border-color: var(--border-medium); transform: translateY(-2px); }

.app-icon {
  width: 64px; height: 64px;
  border-radius: 16px;
  flex: none;
  display: grid; place-items: center;
  font-weight: 700;
  font-size: 22px;
  color: #fff;
  background: var(--primary);
  overflow: hidden;
}
.app-icon img { width: 100%; height: 100%; object-fit: cover; display: block; }
.app-body h3 { font-size: 18px; font-weight: 600; }
.app-body p { margin: 6px 0 14px; font-size: 14.5px; color: var(--text-secondary); line-height: 1.5; }

.app-more {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 600; color: var(--primary-hover);
}

.pending-note {
  margin-top: 28px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ---------- Bottom CTA band ---------- */
.cta-band {
  background: var(--band-bg);
  border: 1px solid var(--band-border);
  border-radius: var(--radius-xl);
  padding: clamp(32px, 6vw, 56px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-band h2 { font-size: clamp(24px, 3vw, 32px); font-weight: 700; letter-spacing: -0.6px; max-width: 16ch; }
.cta-band p { margin-top: 10px; color: var(--text-secondary); font-size: 15px; max-width: 40ch; }
.cta-band-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.cta-band-note { font-size: 12.5px; color: var(--text-muted); }

/* ---------- Footer ---------- */
.site-footer { padding-block: 64px 32px; border-top: 1px solid var(--border-light); }
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr repeat(4, 1fr);
  gap: 32px;
  padding-bottom: 40px;
}
@media (max-width: 1023px) { .footer-top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 599px) { .footer-top { grid-template-columns: 1fr; } }

.footer-brand p { margin-top: 12px; font-size: 14px; color: var(--text-secondary); max-width: 30ch; }
.footer-col h3 {
  font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text-muted); font-weight: 600; margin: 0 0 12px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 8px; }
.footer-col a { font-size: 14.5px; color: var(--text-secondary); }
.footer-col a:hover { color: var(--text-primary); text-decoration: underline; }

.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding-top: 20px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ---------- Guide page ---------- */
.guide-steps { margin-top: 16px; }
.guide-step {
  display: flex;
  gap: 24px;
  padding-block: 28px;
  border-bottom: 1px solid var(--border-light);
}
.guide-step:first-child { padding-top: 0; }
.guide-step:last-child { border-bottom: none; }
.guide-step h3 { font-size: 18px; font-weight: 600; }
.guide-step p { margin: 8px 0 0; font-size: 15px; color: var(--text-secondary); line-height: 1.65; max-width: 60ch; }
.guide-step .step-num { flex: none; }

.type-groups {
  margin-top: 24px;
  display: grid;
  gap: 1px;
  background: var(--border-light);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  overflow: hidden;
}
.type-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 20px;
  background: #fff;
  padding: 20px 24px;
  align-items: start;
}
@media (max-width: 700px) {
  .type-row { grid-template-columns: 1fr; }
}
.type-cat-name { font-weight: 600; font-size: 15px; }
.type-cat-count { font-size: 12.5px; color: var(--text-muted); margin-top: 2px; }
.type-body { display: flex; flex-direction: column; }
.type-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-family: inherit;
  font-size: 13.5px;
  padding: 6px 12px;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  background: var(--background-soft);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.chip:hover { border-color: var(--border-medium); color: var(--text-primary); }
.chip.is-active { background: var(--primary); border-color: var(--primary); color: #fff; }

.type-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.28s ease, margin-top 0.28s ease;
}
.type-detail.is-open { max-height: 120px; margin-top: 14px; }
.type-detail-inner {
  margin: 0;
  background: var(--primary-soft);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.6;
}
@media (prefers-reduced-motion: reduce) {
  .type-detail { transition: none; }
}

.adv-features {
  margin-top: 24px;
  display: grid;
  gap: 1px;
  background: var(--border-light);
  border: 1px solid var(--border-light);
  border-radius: 14px;
  overflow: hidden;
}
.adv-feature {
  background: #fff;
  padding: 32px;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
}
@media (max-width: 600px) {
  .adv-feature { grid-template-columns: 1fr; }
}
.adv-feature-num {
  font-family: inherit;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
}
.adv-feature h3 { font-size: 19px; font-weight: 700; }
.adv-feature > div > p { margin-top: 8px; font-size: 15px; color: var(--text-secondary); line-height: 1.65; max-width: 64ch; }
.adv-feature .feature-list { margin-top: 18px; gap: 10px; }
.adv-feature .feature-item { font-size: 14.5px; }

/* ---------- Doc pages (help / contact / privacy / terms) ---------- */
.doc-hero { padding-block: clamp(48px, 7vw, 80px) clamp(24px, 4vw, 40px); }
.doc-hero h1 { font-size: clamp(28px, 3.4vw, 40px); font-weight: 700; letter-spacing: -0.6px; }
.doc-hero p { margin-top: 12px; color: var(--text-secondary); font-size: 16px; }
.doc-body { padding-bottom: clamp(64px, 8vw, 100px); }
.doc-body .wrap { max-width: 760px; }
.doc-body h2 { font-size: 20px; font-weight: 700; margin-top: 40px; }
.doc-body h2:first-child { margin-top: 0; }
.doc-body p, .doc-body li { font-size: 15.5px; line-height: 1.75; color: var(--text-secondary); }
.doc-body ul { margin-top: 12px; padding-left: 1.3em; list-style: disc; display: block; }
.doc-body li { margin-top: 6px; }
.doc-body a { color: var(--primary-hover); text-decoration: underline; }
.doc-body strong { color: var(--text-primary); }
.doc-meta { font-size: 13px; color: var(--text-muted); margin-top: 8px; }

.faq-item {
  border-bottom: 1px solid var(--border-light);
  padding-block: 20px;
}
.faq-item:first-child { padding-top: 0; }
.faq-item h2 { margin: 0; font-size: 16.5px; font-weight: 600; color: var(--text-primary); }
.faq-item p { margin-top: 8px; }

.contact-card {
  border: 1px solid var(--border-light);
  border-radius: 14px;
  padding: 28px;
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: space-between;
}
.contact-card p { margin: 4px 0 0; font-size: 14px; }