/* ============================================================
   AIcut Works Portfolio — Custom Styles
   トンマナ: ai-cut.jp に準拠（#0C1F33 ネイビー / ホワイト / Montserrat + Noto Sans JP）
   ============================================================ */

:root {
  --navy: #0C1F33;
  --navy-light: #1a3550;
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --green: #16a34a;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.16);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans JP', 'Helvetica Neue', sans-serif;
  color: var(--gray-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

/* ---- NAV ---- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gray-100);
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 32px;
  justify-content: space-between;
}

.nav-logo {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 18px;
  color: var(--navy);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-logo span {
  color: var(--navy);
}

.nav-back {
  font-size: 13px;
  color: var(--gray-500);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s;
}

.nav-back:hover { color: var(--navy); }

/* ---- HERO ---- */
.hero {
  background: var(--navy);
  padding: 120px 32px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 60% 40%, rgba(255,255,255,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.hero-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 20px;
}

.hero h1 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 900;
  color: var(--white);
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 15px;
  color: rgba(255,255,255,0.6);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ---- WORKS SECTION ---- */
.works-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 64px 32px 96px;
}

/* ---- FILTER ---- */
.filter-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  font-family: 'Montserrat', sans-serif;
  font-size: 13px;
  font-weight: 700;
  padding: 10px 24px;
  border-radius: 100px;
  border: 2px solid var(--gray-300);
  background: transparent;
  color: var(--gray-500);
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.5px;
}

.filter-btn:hover {
  border-color: var(--navy);
  color: var(--navy);
}

.filter-btn.active {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--white);
}

/* ---- WORKS GRID ---- */
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

@media (max-width: 900px) {
  .works-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .works-grid { grid-template-columns: 1fr; }
  .works-section { padding: 40px 20px 60px; }
  .hero { padding: 100px 20px 60px; }
  .nav { padding: 0 20px; }
}

/* ---- WORK CARD ---- */
.work-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform 0.25s, box-shadow 0.25s;
}

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

.work-card:hover .card-overlay {
  opacity: 1;
}

.card-thumb-wrap {
  position: relative;
  aspect-ratio: 9/16;
  background: var(--gray-100);
  overflow: hidden;
}

/* 横長動画の場合は 16/9 に変える場合はここを修正 */

.card-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s;
}

.work-card:hover .card-thumb {
  transform: scale(1.04);
}

.card-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: rgba(255,255,255,0.4);
  font-family: 'Montserrat', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(12,31,51,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.25s;
}

.play-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255,255,255,0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

.play-btn svg { fill: var(--navy); margin-left: 3px; }

.card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: white;
  padding: 4px 10px;
  border-radius: 100px;
}

.card-body {
  padding: 16px 18px 20px;
}

.card-meta {
  display: flex;
  align-items: center;
  margin-bottom: 6px;
}

.card-platform {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.4;
  margin-bottom: 4px;
}

.card-client {
  font-size: 12px;
  color: var(--gray-500);
}

/* ---- EMPTY STATE ---- */
.empty-state {
  display: none;
  text-align: center;
  padding: 80px 20px;
  color: var(--gray-500);
}

/* ---- CTA SECTION ---- */
.cta-section {
  background: var(--navy);
  padding: 80px 32px;
  text-align: center;
}

.cta-section h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 900;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.cta-section p {
  font-size: 15px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 40px;
  line-height: 1.8;
}

.cta-btn {
  display: inline-block;
  font-family: 'Montserrat', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--navy);
  background: var(--white);
  padding: 16px 40px;
  border-radius: 100px;
  text-decoration: none;
  transition: all 0.25s;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.cta-btn:hover {
  background: rgba(255,255,255,0.9);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.3);
}

/* ---- FOOTER ---- */
.footer {
  background: #060e16;
  padding: 32px;
  text-align: center;
}

.footer p {
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  color: rgba(255,255,255,0.3);
  letter-spacing: 1px;
}

/* ---- MODAL ---- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}

.modal.open {
  opacity: 1;
  pointer-events: all;
}

.modal-inner {
  background: var(--white);
  border-radius: 16px;
  width: 100%;
  max-width: 540px;
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0,0,0,0.5);
  transform: scale(0.95);
  transition: transform 0.25s;
  max-height: 90vh;
  overflow-y: auto;
}

.modal.open .modal-inner {
  transform: scale(1);
}

.modal-video-wrap {
  position: relative;
  padding-bottom: 177.78%; /* 9:16 */
  background: #000;
  overflow: hidden;
}

.video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: rgba(255,255,255,0.5);
  text-align: center;
}

.video-placeholder p {
  font-size: 16px;
  font-weight: 700;
  color: rgba(255,255,255,0.7);
  margin: 12px 0 6px;
}

.video-placeholder small {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
}

.modal-info {
  padding: 24px;
}

.modal-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.modal-badge {
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: white;
  padding: 4px 12px;
  border-radius: 100px;
}

.modal-platform {
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  font-weight: 700;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 6px;
}

.modal-client {
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 14px;
}

.modal-desc {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 1.8;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: background 0.2s;
  z-index: 10;
}

.modal-close:hover { background: rgba(255,255,255,0.25); }

.modal-video-container {
  position: relative;
}