/* ============================================
   F-MINUS Corporate Site — Global Styles
   Tone: Creative / Bold Typography / Editorial
   ============================================ */

:root {
  --ink: #101010;
  --paper: #f6f6f8;
  --accent: #3c4cbe;
  --gray: #85868e;
  --line: rgba(16, 16, 16, 0.14);
  --font-display: "Archivo", "Zen Kaku Gothic New", sans-serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: #fff; }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.wrap { max-width: 1240px; margin: 0 auto; padding: 0 clamp(20px, 4vw, 48px); }

/* ---------- Header ---------- */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px clamp(20px, 4vw, 48px);
  mix-blend-mode: normal;
  background: linear-gradient(to bottom, rgba(246,246,248,0.92), rgba(246,246,248,0));
  backdrop-filter: blur(2px);
}
.logo {
  font-family: var(--font-display);
  font-weight: 800; font-size: 20px; letter-spacing: 0.02em;
}
.logo span { color: var(--accent); }
.logo img { height: 24px; display: block; width: auto; }
.footer .logo img { height: 30px; }
.nav { display: flex; gap: clamp(16px, 2.5vw, 36px); align-items: center; }
.nav a {
  font-size: 13px; font-weight: 600; letter-spacing: 0.08em;
  position: relative; padding: 4px 0;
}
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 2px; background: var(--accent);
  transform: scaleX(0); transform-origin: right;
  transition: transform 0.3s cubic-bezier(0.7, 0, 0.3, 1);
}
.nav a:hover::after, .nav a.active::after { transform: scaleX(1); transform-origin: left; }
.nav .btn-contact {
  border: 1.5px solid var(--ink); border-radius: 999px;
  padding: 8px 22px; transition: all 0.25s ease;
}
.nav .btn-contact::after { display: none; }
.nav .btn-contact:hover { background: var(--ink); color: var(--paper); }

/* mobile nav */
.nav-toggle { display: none; }

/* ---------- Type ---------- */
.display {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}
.sec-label {
  font-family: var(--font-display);
  font-size: 12px; font-weight: 700; letter-spacing: 0.28em;
  text-transform: uppercase; color: var(--accent);
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 28px;
}
.sec-label::before { content: ""; width: 36px; height: 2px; background: var(--accent); }
.sec-title {
  font-size: clamp(30px, 4.5vw, 54px);
  font-weight: 700; line-height: 1.25; letter-spacing: 0.01em;
  margin-bottom: 24px;
}
.lead { font-size: clamp(15px, 1.4vw, 17px); color: #3a3a40; max-width: 640px; }

/* ---------- Hero ---------- */
.hero {
  min-height: 92vh;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding-bottom: 6vh; position: relative;
}
.hero-title {
  font-size: clamp(56px, 11.5vw, 176px);
  margin-bottom: 3vh;
}
.hero-title .stroke {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--ink);
}
.hero-title em { font-style: normal; color: var(--accent); }
.hero-sub {
  display: flex; flex-wrap: wrap; gap: 24px 48px;
  justify-content: space-between; align-items: flex-end;
  border-top: 1.5px solid var(--ink); padding-top: 28px;
}
.hero-sub p { font-size: clamp(15px, 1.5vw, 18px); font-weight: 600; max-width: 560px; }
.hero-scroll {
  font-family: var(--font-display); font-size: 11px; letter-spacing: 0.3em;
  text-transform: uppercase; color: var(--gray);
  display: flex; align-items: center; gap: 10px; white-space: nowrap;
}
.hero-scroll::after {
  content: ""; width: 48px; height: 1.5px; background: var(--gray);
  animation: pulse-line 2s ease-in-out infinite;
}
@keyframes pulse-line { 0%,100% { transform: scaleX(1); opacity:1 } 50% { transform: scaleX(0.5); opacity:0.4 } }

/* ---------- Marquee ---------- */
.marquee {
  background: var(--ink); color: var(--paper);
  overflow: hidden; padding: 16px 0; white-space: nowrap;
}
.marquee-inner {
  display: inline-block; animation: marquee 28s linear infinite;
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(16px, 2vw, 22px); letter-spacing: 0.12em; text-transform: uppercase;
}
.marquee-inner span { margin: 0 28px; }
.marquee-inner .dot { color: var(--accent); }
@keyframes marquee { from { transform: translateX(0) } to { transform: translateX(-50%) } }

/* ---------- Sections ---------- */
.section { padding: clamp(72px, 10vw, 140px) 0; }
.section.dark { background: var(--ink); color: var(--paper); }
.section.dark .lead { color: #b3b5c0; }
.section.dark .sec-label { color: var(--accent); }

/* ---------- Cards / grid ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 4vw, 64px); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(20px, 2.5vw, 36px); }

.card {
  border: 1.5px solid var(--ink); border-radius: 20px;
  padding: clamp(28px, 3vw, 44px);
  background: var(--paper);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-6px); box-shadow: 8px 8px 0 var(--ink); }
.card .num {
  font-family: var(--font-display); font-weight: 800;
  font-size: 14px; letter-spacing: 0.2em; color: var(--accent);
  margin-bottom: 20px; display: block;
}
.card h3 { font-size: 22px; font-weight: 700; margin-bottom: 14px; line-height: 1.4; }
.card p { font-size: 14.5px; color: #3a3a40; }

.section.dark .card { background: transparent; border-color: rgba(246,246,248,0.3); }
.section.dark .card:hover { box-shadow: 8px 8px 0 var(--accent); border-color: var(--paper); }
.section.dark .card p { color: #b3b5c0; }

/* ---------- Works ---------- */
.work-row {
  display: grid; grid-template-columns: 120px 1fr 1.2fr auto;
  gap: clamp(16px, 3vw, 48px); align-items: center;
  padding: 32px 0; border-bottom: 1.5px solid var(--line);
  transition: padding-left 0.3s ease;
}
.work-row:first-of-type { border-top: 1.5px solid var(--line); }
.work-row:hover { padding-left: 16px; }
.work-row .idx { font-family: var(--font-display); font-weight: 800; font-size: 15px; color: var(--accent); letter-spacing: 0.1em; }
.work-row .industry { font-size: 19px; font-weight: 700; line-height: 1.5; }
.work-row .desc { font-size: 14px; color: #54555e; }
.work-row .tag {
  font-family: var(--font-display); font-size: 11px; font-weight: 700;
  letter-spacing: 0.15em; text-transform: uppercase;
  border: 1.5px solid var(--ink); border-radius: 999px; padding: 6px 16px;
  white-space: nowrap;
}

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; background: var(--line); border: 1.5px solid var(--ink); border-radius: 20px; overflow: hidden; }
.stat { background: var(--paper); padding: clamp(28px, 3vw, 48px); text-align: center; }
.stat .value { font-family: var(--font-display); font-weight: 800; font-size: clamp(36px, 5vw, 64px); line-height: 1; color: var(--ink); }
.stat .value em { font-style: normal; color: var(--accent); }
.stat .label { font-size: 13px; font-weight: 600; color: var(--gray); margin-top: 12px; letter-spacing: 0.05em; }

/* ---------- Flow / steps ---------- */
.flow { counter-reset: step; }
.flow-item {
  display: grid; grid-template-columns: 80px 1fr; gap: clamp(20px, 4vw, 56px);
  padding: 36px 0; border-bottom: 1.5px solid var(--line); align-items: baseline;
}
.flow-item::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-display); font-weight: 800; font-size: 32px; color: var(--accent);
}
.flow-item h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.flow-item p { font-size: 14.5px; color: #54555e; max-width: 640px; }

/* ---------- Table (company) ---------- */
.info-table { width: 100%; border-collapse: collapse; }
.info-table th, .info-table td {
  text-align: left; padding: 22px 8px; border-bottom: 1.5px solid var(--line);
  vertical-align: top; font-size: 15px;
}
.info-table th { width: 180px; font-weight: 700; white-space: nowrap; }

/* ---------- Profile ---------- */
.profile { display: grid; grid-template-columns: 1fr 1.6fr; gap: clamp(28px, 5vw, 72px); align-items: start; }
.profile-name { font-size: 30px; font-weight: 700; margin-bottom: 4px; }
.profile-en { font-family: var(--font-display); font-size: 13px; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); margin-bottom: 24px; }
.profile-photo {
  aspect-ratio: 4/5; border-radius: 20px; border: 1.5px solid var(--ink);
  background: repeating-linear-gradient(-45deg, var(--paper), var(--paper) 10px, rgba(16,16,16,0.05) 10px, rgba(16,16,16,0.05) 20px);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 12px; letter-spacing: 0.2em; color: var(--gray); text-transform: uppercase;
}

img.profile-photo { aspect-ratio: 3/2; object-fit: cover; object-position: center 20%; background: none; }

/* ---------- CTA ---------- */
.cta { background: var(--accent); color: #fff; text-align: center; padding: clamp(80px, 12vw, 160px) 0; position: relative; overflow: hidden; }
.cta .display { font-size: clamp(40px, 8vw, 110px); margin-bottom: 28px; }
.cta p { font-weight: 600; margin-bottom: 40px; font-size: clamp(14px, 1.5vw, 17px); }
.cta-btn {
  display: inline-block; font-family: var(--font-display);
  font-weight: 800; font-size: clamp(16px, 1.8vw, 20px); letter-spacing: 0.06em;
  background: #fff; color: var(--ink); border-radius: 999px;
  padding: 20px 56px; transition: all 0.25s ease; text-transform: uppercase;
}
.cta-btn:hover { background: var(--ink); color: #fff; transform: translateY(-3px); }

/* ---------- Footer ---------- */
.footer { background: var(--ink); color: var(--paper); padding: 64px 0 32px; }
.footer-top { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 32px; padding-bottom: 48px; border-bottom: 1px solid rgba(246,246,248,0.2); }
.footer .logo { font-size: 26px; }
.footer-nav { display: flex; gap: 28px; flex-wrap: wrap; }
.footer-nav a { font-size: 13px; font-weight: 600; letter-spacing: 0.08em; opacity: 0.8; transition: opacity 0.2s; }
.footer-nav a:hover { opacity: 1; color: var(--accent); }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding-top: 28px; font-size: 12px; color: rgba(246,246,248,0.5); }

/* ---------- Page hero (subpages) ---------- */
.page-hero { padding: clamp(150px, 20vw, 220px) 0 clamp(48px, 6vw, 80px); }
.page-hero .display { font-size: clamp(44px, 9vw, 130px); }
.page-hero .lead { margin-top: 28px; }

/* ---------- Contact form ---------- */
.form { max-width: 720px; }
.form-group { margin-bottom: 28px; }
.form-group label { display: block; font-weight: 700; font-size: 14px; margin-bottom: 10px; }
.form-group label .req { color: var(--accent); font-size: 11px; margin-left: 8px; letter-spacing: 0.1em; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; font-family: var(--font-body); font-size: 15px;
  padding: 16px 18px; background: #fff;
  border: 1.5px solid var(--ink); border-radius: 14px;
  transition: box-shadow 0.2s ease;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; box-shadow: 4px 4px 0 var(--ink);
}
.form-group textarea { min-height: 180px; resize: vertical; }
.form-submit {
  font-family: var(--font-display); font-weight: 800; font-size: 17px;
  letter-spacing: 0.06em; text-transform: uppercase; cursor: pointer;
  background: var(--ink); color: var(--paper);
  border: 1.5px solid var(--ink); border-radius: 999px;
  padding: 18px 56px; transition: all 0.25s ease;
}
.form-submit:hover { background: var(--accent); border-color: var(--accent); transform: translateY(-3px); }
.form-note { font-size: 12.5px; color: var(--gray); margin-top: 20px; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.6, 0.2, 1); }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .grid-2, .grid-3, .profile { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .work-row { grid-template-columns: 1fr; gap: 10px; padding: 26px 0; }
  .work-row .tag { justify-self: start; }
  .nav { gap: 14px; }
  .nav a:not(.btn-contact) { display: none; }
  .nav-toggle { display: block; font-family: var(--font-display); font-size: 12px; font-weight: 700; letter-spacing: 0.15em; border: none; background: none; cursor: pointer; text-transform: uppercase; }
  .mobile-menu {
    position: fixed; inset: 0; background: var(--ink); color: var(--paper);
    display: flex; flex-direction: column; justify-content: center; gap: 8px;
    padding: 0 32px; z-index: 200; transform: translateY(-100%);
    transition: transform 0.45s cubic-bezier(0.7, 0, 0.3, 1);
  }
  .mobile-menu.open { transform: translateY(0); }
  .mobile-menu a { font-family: var(--font-display); font-size: 34px; font-weight: 800; text-transform: uppercase; padding: 10px 0; }
  .mobile-menu a:hover { color: var(--accent); }
  .mobile-menu .close { position: absolute; top: 24px; right: 32px; font-size: 14px; letter-spacing: 0.2em; }
}
@media (min-width: 861px) { .mobile-menu { display: none; } }