/* ======================= about-main.css - Upgraded for Light/Dark Mode ======================= */

/* ======================= 공통 카드 그리드 레이아웃: 모든 섹션에서 사용 ======================= */
body {
  font-family: 'Pretendard', sans-serif;
  color: var(--text-primary-color);
}

.meaning-chunk {
  display: inline-block;
  cursor: var(--cursor-grab2);
  transition: text-decoration 0.18s, background 0.14s;
  border-radius: 3px;
  outline: none;
}
.meaning-chunk:hover,
.meaning-chunk:focus {
  text-decoration: underline;
  text-underline-offset: 0.18em;
  outline: none;
}

/* 섹션 레이아웃 및 간격 */
.about-skills,
.about-values,
.about-process {
  padding-left: clamp(0.7rem, 8vw, 10rem);
  padding-right: clamp(0.7rem, 8vw, 10rem);
  padding-top: 5rem;
  padding-bottom: 5rem;
  position: relative;
  box-sizing: border-box;
}
.about-funfacts {
  margin-bottom: 2rem;
  padding-left: clamp(0.7rem, 8vw, 10rem);
  padding-right: clamp(0.7rem, 8vw, 10rem);
  padding-top: 3rem;
  padding-bottom: 3rem;
  position: relative;
  box-sizing: border-box;
}
.about-section-gap2 {
  height: 1rem;
  width: 100%;
}

/* 섹션 타이틀 */
.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 4rem;
  text-align: left;
  background: linear-gradient(45deg, #24243e, #414145);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  padding-left: 2rem;
  transition: background 0.3s ease;
}

.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 0.5rem;
  height: 2.5rem;
  background: linear-gradient(45deg, #24243e, #414145);
  border-radius: 0.25rem;
  transition: background 0.3s ease;
}

body[data-theme="dark"] .section-title {
  background: linear-gradient(45deg, var(--color-gray-100), var(--color-gray-300));
  -webkit-background-clip: text;
  background-clip: text;
}
body[data-theme="dark"] .section-title::before {
  background: linear-gradient(45deg, var(--color-gray-100), var(--color-gray-300));
}

/* ======================= 한지+그레인 배경 (공통) ======================= */
.section-background-active {
  position: relative;
  box-sizing: border-box;
  overflow: hidden;
  z-index: 0;
}

.section-background-active::before,
.section-background-active::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 100%;
  opacity: 0;
  transition: opacity 0.8s cubic-bezier(.33,1.02,.45,.98);
  pointer-events: none;
  z-index: -1;
}

.section-background-active.background-active::before {
  background: var(--color-gray-100) url('./hanji.png') repeat center center/auto 520px;
  opacity: 0.22;
  mix-blend-mode: multiply;
  transition-delay: 0.3s;
}
.section-background-active.background-active::after {
  background: url('https://grainy-gradients.vercel.app/noise.svg');
  background-size: cover;
  background-repeat: repeat;
  opacity: 0.29;
  mix-blend-mode: multiply;
  transition-delay: 0.2s;
}

body[data-theme="dark"] .section-background-active.background-active::before {
  opacity: 0.1;
  mix-blend-mode: screen;
}
body[data-theme="dark"] .section-background-active.background-active::after {
  opacity: 0.08;
  mix-blend-mode: overlay;
}

/* ==========================================================================
   ABOUT FIXED HEADER STYLES
   ========================================================================== */
.about-header {
    position: fixed;
    top: 10px;
    z-index: 999;
    width: 100%;
    background-color: transparent;
    transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
}

.about-header.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-100%);
}

.about-header:not(.hidden) {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.about-header .about-header-inner {
    margin: 0 auto;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding: 0 1rem;
}

.about-header .theme-toggle-button {
    padding: 0.5rem;
    border: none;
    background: none;
    cursor: pointer;
    position: relative;
    width: 2rem;
    height: 2rem;
    transition: opacity 0.3s;
    margin-top: 0.5rem;
    margin-right: 1rem;
    scale: 1.2;
}

.about-header .theme-toggle-button:hover {
    opacity: 0.7;
}

.about-header .theme-icon {
    width: 1.25rem;
    height: 1.25rem;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: transform 0.3s, opacity 0.3s, stroke 0.3s ease;
    stroke: var(--text-primary-color);
}

.about-header .theme-icon.hidden {
    transform: translate(-50%, -50%) rotate(-90deg);
    opacity: 0;
}


/* [모바일 수정] 768px 이하 화면에 대한 공통 스타일 조정 */
@media (max-width: 768px) {
  .about-skills,
  .about-values,
  .about-process,
  .about-funfacts {
    padding-left: 2rem;
    padding-right: 2rem;
    padding-top: 4rem;
    padding-bottom: 4rem;
  }

  .section-title {
    font-size: 1.5rem; /* 제목 폰트 크기 축소 */
    margin-bottom: 2.5rem; /* 제목 하단 마진 축소 */
    padding-left: 1.5rem;
  }

  .section-title::before {
    width: 0.35rem;
    height: 2rem;
  }

  .about-section-gap2 {
    height: 0.5rem;
  }
}