/* ============================================================
   PORTFOLIO PAGE — Luxury Hero Section
   ============================================================ */

/* ── Portfolio Hero Section — Clean Handwritten ─────────── */
.portfolio-hero {
  background-color: var(--color-white);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px 40px 100px;
}

.portfolio-hero__container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  z-index: 2;
}

/* Handwritten image */
.portfolio-hero__image-wrap {
  opacity: 0;
  animation: portfolioFadeUp 1.4s cubic-bezier(0.22, 1, 0.36, 1) forwards 0.3s;
}

.portfolio-hero__handwritten {
  display: block;
  width: clamp(320px, 55vw, 720px);
  max-width: 100%;
  height: auto;
  mix-blend-mode: multiply;
}

/* Tagline */
.portfolio-hero__tagline {
  font-family: var(--font-mincho);
  font-size: clamp(1rem, 2vw, 1.4rem);
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: 0.16em;
  margin: 20px 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  opacity: 0;
  animation: portfolioFadeUp 1.4s cubic-bezier(0.22, 1, 0.36, 1) forwards 0.75s;
}

.portfolio-hero__tagline-dash {
  font-size: 1.5em;
  color: rgba(34, 34, 34, 0.3);
  letter-spacing: 0;
  flex-shrink: 0;
  line-height: 1;
  margin-top: 0.1em;
}

@keyframes portfolioFadeUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  .portfolio-hero {
    padding: 100px 24px 80px;
    min-height: 80vh;
  }
  .portfolio-hero__handwritten {
    width: clamp(260px, 80vw, 480px);
  }
  .portfolio-hero__tagline {
    font-size: clamp(0.88rem, 3.5vw, 1.1rem);
    letter-spacing: 0.12em;
    gap: 14px;
  }
}

.portfolio-hero__scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(
    to bottom,
    rgba(255, 130, 134, 0.6),
    transparent
  );
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% {
    transform: translateY(0);
    opacity: 1;
  }
  50% {
    transform: translateY(15px);
    opacity: 0.3;
  }
}

/* Fade In Up Animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 968px) {
  .portfolio-hero__container {
    padding: 0 40px 100px 40px;
  }

  .portfolio-hero__title {
    font-size: clamp(2rem, 6vw, 4rem);
  }

  .portfolio-hero__title-line:nth-child(1) {
    font-size: clamp(1.75rem, 4.5vw, 3rem);
  }

  .portfolio-hero__label-line {
    width: 40px;
  }

  .portfolio-hero__deco--1 {
    width: 300px;
    height: 300px;
  }

  .portfolio-hero__deco--2 {
    width: 200px;
    height: 200px;
  }

  .portfolio-hero__deco--3 {
    display: none;
  }

  .portfolio-hero__scroll {
    bottom: 30px;
  }
}

@media (max-width: 768px) {
  .portfolio-hero {
    min-height: 90vh;
  }

  .portfolio-hero__container {
    padding: 0 24px 80px 24px;
  }

  .portfolio-hero__content {
    gap: 36px;
  }

  .portfolio-hero__title {
    font-size: clamp(1.75rem, 5.5vw, 3rem);
    gap: 8px;
  }

  .portfolio-hero__title-line:nth-child(1) {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
  }

  .portfolio-hero__label {
    gap: 16px;
  }

  .portfolio-hero__label-line {
    width: 30px;
  }

  .portfolio-hero__label-text {
    font-size: 0.75rem;
  }

  .portfolio-hero__scroll {
    bottom: 24px;
  }

  .portfolio-hero__scroll-line {
    height: 40px;
  }

  .portfolio-hero__deco--1,
  .portfolio-hero__deco--2 {
    display: none;
  }
}

@media (max-width: 600px) {
  .portfolio-hero__title {
    font-size: clamp(1.5rem, 5vw, 2.5rem);
  }

  .portfolio-hero__title-line:nth-child(1) {
    font-size: clamp(1.25rem, 4vw, 2rem);
  }

  .portfolio-hero__scroll {
    bottom: 20px;
  }

  .portfolio-hero__scroll-text {
    font-size: 0.7rem;
  }

  .portfolio-hero__scroll-line {
    height: 35px;
  }
}

/* ============================================================
   KEY MESSAGE SECTION
   ============================================================ */

.key-message {
  position: relative;
  width: 100%;
  background: #ffffff;
  padding: 100px 0;
  overflow: hidden;
}

.key-message__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 60px;
}

.key-message__text {
  font-family: var(--font-mincho);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 500;
  color: var(--color-text);
  text-align: center;
  line-height: 1.8;
  letter-spacing: 0.08em;
  margin: 0;
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.key-message__text.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   PORTFOLIO GRID SECTION
   ============================================================ */

.portfolio-grid {
  position: relative;
  width: 100%;
  background: #ffffff;
  padding: 80px 0 120px 0;
}

.portfolio-grid__header {
  text-align: center;
  margin-bottom: 72px;
  padding: 0 40px;
}

.portfolio-grid__title {
  font-family: var(--font-mincho);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: 0.12em;
  margin: 12px 0 16px;
}

.portfolio-grid__subtext {
  font-family: var(--font-sans);
  font-size: clamp(1rem, 1.8vw, 1.3rem);
  color: var(--color-gray);
  letter-spacing: 0.06em;
  line-height: 1.8;
}

.portfolio-grid__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 60px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px 40px;
}

/* Portfolio Item */
.portfolio-item {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  opacity: 0;
  transform: translateY(30px);
}

.portfolio-item.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.portfolio-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
  border-color: var(--color-accent);
}

/* Image Wrapper */
.portfolio-item__image-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-bg);
}

.portfolio-item__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-item:hover .portfolio-item__image {
  transform: scale(1.05);
}

/* Content */
.portfolio-item__content {
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.portfolio-item__title {
  font-family: var(--font-mincho);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.06em;
  line-height: 1.4;
  margin: 0;
  transition: color 0.3s ease;
}

.portfolio-item:hover .portfolio-item__title {
  color: var(--color-accent);
}

.portfolio-item__description {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--color-gray-dark);
  letter-spacing: 0.04em;
  line-height: 1.7;
  margin: 0;
}

/* ── Responsive ───────────────────────────────────────────── */

/* Tablet */
@media (max-width: 1024px) {
  .key-message {
    padding: 80px 0;
  }

  .key-message__container {
    padding: 0 40px;
  }

  .portfolio-grid {
    padding: 48px 0 100px 0;
  }

  .portfolio-grid__container {
    padding: 0 40px;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 32px;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .key-message {
    padding: 60px 0;
  }

  .key-message__container {
    padding: 0 24px;
  }

  .key-message__text {
    font-size: clamp(1.25rem, 4vw, 1.75rem);
    line-height: 1.7;
  }

  .portfolio-grid {
    padding: 40px 0 80px 0;
  }

  .portfolio-grid__container {
    padding: 0 24px;
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .portfolio-item__content {
    padding: 24px 20px;
  }

  .portfolio-item__title {
    font-size: 1.125rem;
  }

  .portfolio-item__description {
    font-size: 0.9rem;
  }
}

/* Small Mobile */
@media (max-width: 600px) {
  .key-message__text {
    font-size: clamp(1.125rem, 4.5vw, 1.5rem);
  }

  .portfolio-item__content {
    padding: 20px 16px;
  }

  .portfolio-item__title {
    font-size: 1rem;
  }

  .portfolio-item__description {
    font-size: 0.875rem;
    line-height: 1.6;
  }
}