/* =========================================================
   /css/about/educational_ideology.css  (FINAL / COPY-PASTE)
   - Depline Premium UI (Deep Green)
   - Safari/Chrome/Edge safe
   - Hero Mosaic (big + two)
   - Intro/Pillars media frame unified (4:3)
   - Fallback UI polished
========================================================= */

/* -------------------------
   TOKENS
------------------------- */
:root {
    --bg: #ffffff;
    --ink: #0f172a;
    --muted: rgba(15, 23, 42, .68);
    --muted2: rgba(15, 23, 42, .54);

    --brand: #006400;
    --brand2: #0a7a2a;

    --line: rgba(15, 23, 42, .10);
    --line2: rgba(15, 23, 42, .08);

    --glass-bg: rgba(255, 255, 255, .72);
    --glass-border: rgba(255, 255, 255, .58);

    --shadow-lg: 0 22px 70px rgba(2, 6, 23, .12);
    --shadow-md: 0 14px 40px rgba(2, 6, 23, .10);
    --shadow-sm: 0 10px 24px rgba(2, 6, 23, .08);

    --radius-xl: 26px;
    --radius-lg: 22px;
    --radius-md: 16px;

    --container: 1180px;
    --pad-xl: clamp(18px, 2.8vw, 34px);
    --pad-lg: clamp(16px, 2.4vw, 28px);
    --pad-md: 16px;

    --fz-hero: clamp(28px, 3.3vw, 52px);
    --fz-h2: clamp(18px, 2.4vw, 30px);
    --fz-body: clamp(14px, 1.55vw, 16px);
}

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

html,
body {
    width: 100%;
    max-width: 100%;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Apple SD Gothic Neo", "Noto Sans KR", Segoe UI, Roboto, Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    word-break: keep-all;
    -webkit-font-smoothing: antialiased;
    text-rendering: geometricPrecision;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ⚠️ 레이아웃 깨짐(가로 스크롤) 방지 */
html,
body {
    overflow-x: clip;
}

@supports not (overflow-x:clip) {

    html,
    body {
        overflow-x: hidden;
    }
}

/* container */
.ideology-container {
    width: min(var(--container), calc(100% - 32px));
    margin: 0 auto;
}

/* page background */
.ideology-wrap {
    line-height: 1.72;
    background:
        radial-gradient(1000px 420px at 18% 0%, rgba(0, 100, 0, .14), transparent 60%),
        radial-gradient(860px 360px at 88% 8%, rgba(0, 100, 0, .09), transparent 62%),
        radial-gradient(700px 260px at 50% 36%, rgba(2, 6, 23, .04), transparent 62%),
        linear-gradient(180deg, #fff, #fff);
}

/* figure 기본 margin 제거(브라우저 기본값 때문에 깨지는 경우 많음) */
.ideology-wrap figure {
    margin: 0;
}

/* -------------------------
   TYPOGRAPHY
------------------------- */
.section-title {
    margin: 0 0 14px;
    font-size: var(--fz-h2);
    letter-spacing: -0.03em;
}

.section-lead {
    margin: 0;
    font-size: clamp(14px, 1.6vw, 16px);
    color: rgba(15, 23, 42, .82);
}

.intro-title__strong {
    color: var(--brand);
}

/* -------------------------
   ANIMATION
------------------------- */
.fade-in {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity .65s cubic-bezier(.2, .8, .2, 1), transform .65s cubic-bezier(.2, .8, .2, 1);
    will-change: transform, opacity;
}

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

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

/* =========================================================
   HERO (현재 HTML: .dp-hero 사용)
========================================================= */
.dp-hero {
    padding: clamp(26px, 3.6vw, 56px) 0;
    background:
        radial-gradient(900px 320px at 10% 10%, rgba(0, 100, 0, .10), transparent 62%),
        radial-gradient(900px 320px at 92% 18%, rgba(0, 100, 0, .06), transparent 62%),
        linear-gradient(180deg, #fff, #fff);
}

.dp-hero__inner {
    width: min(var(--container), calc(100% - 32px));
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: clamp(18px, 3vw, 42px);
    align-items: center;
    min-width: 0;
}

/* LEFT */
.dp-hero__eyebrow {
    margin: 0 0 10px;
    font-size: 12px;
    letter-spacing: .16em;
    color: rgba(0, 100, 0, .92);
    font-weight: 800;
}

.dp-hero__title {
    margin: 0 0 14px;
    font-size: var(--fz-hero);
    line-height: 1.08;
    letter-spacing: -0.04em;
    color: var(--ink);
}

.dp-hero__desc {
    margin: 0 0 18px;
    font-size: clamp(14px, 1.6vw, 17px);
    color: rgba(15, 23, 42, .78);
    max-width: 46ch;
}

/* chips */
.dp-hero__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 0 0 16px;
}

.dp-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .75);
    box-shadow: 0 10px 22px rgba(2, 6, 23, .06);
    font-size: 13px;
    color: rgba(15, 23, 42, .86);
}

.dp-chip::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--brand), rgba(0, 100, 0, .35));
    box-shadow: 0 0 0 3px rgba(0, 100, 0, .10);
}

/* CTA */
.dp-hero__cta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin: 6px 0 18px;
}

.dp-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 46px;
    padding: 0 16px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 800;
    letter-spacing: -0.01em;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, .78);
    color: rgba(15, 23, 42, .92);
    transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
    will-change: transform;
}

.dp-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.dp-btn--primary {
    background: var(--brand);
    color: #fff;
    border-color: rgba(0, 100, 0, .35);
}

.dp-btn--ghost {
    background: rgba(255, 255, 255, .78);
}

/* info cards */
.dp-hero__cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-top: 6px;
    min-width: 0;
}

.dp-mini {
    background: rgba(255, 255, 255, .82);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 14px;
    box-shadow: 0 12px 26px rgba(2, 6, 23, .06);
}

.dp-mini__label {
    font-size: 12px;
    color: var(--muted2);
    font-weight: 900;
    margin-bottom: 6px;
}

.dp-mini__value {
    font-size: 14px;
    font-weight: 900;
    color: rgba(15, 23, 42, .92);
    line-height: 1.35;
}

/* RIGHT mosaic */
.dp-hero__right {
    min-width: 0;
}

.dp-mosaic {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    align-items: stretch;
    min-width: 0;
}

/* =========================================================
   MEDIA FRAME (핵심: 깨짐 방지)
   - dp-shot / intro-media / pillar__media 공통 프레임
========================================================= */
.dp-shot,
.intro-media,
.pillar__media {
    position: relative;
    width: 100%;
    max-width: 100%;
    display: block;
    overflow: hidden;
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    background: linear-gradient(135deg, rgba(0, 100, 0, .12), rgba(2, 6, 23, .03));
    box-shadow: var(--shadow-md);
    transform: translateZ(0);
    min-width: 0;

    /* ✅ 프레임 비율은 컨테이너에만 */
    aspect-ratio: 4 / 3;

    /* ✅ 이미지 하단 “틈” 제거 */
    line-height: 0;
}

/* 이미지: absolute fill로 전역 img height:auto 무력화 */
.dp-shot>img,
.intro-media>img,
.pillar__media>img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    max-width: none;
    max-height: none;
    object-fit: cover;
    object-position: 50% 50%;
    display: block;
    backface-visibility: hidden;
    transform: scale(1.02);
    transition: transform .8s cubic-bezier(.2, .8, .2, 1);
}

/* 오버레이 */
.dp-shot::after,
.intro-media::after,
.pillar__media::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(520px 240px at 70% 18%, rgba(255, 255, 255, .14), transparent 62%),
        linear-gradient(180deg, rgba(2, 6, 23, .08), transparent 40%),
        linear-gradient(0deg, rgba(2, 6, 23, .18), transparent 45%);
    pointer-events: none;
}

/* hover zoom (터치에선 아래에서 제한) */
.dp-shot:hover>img,
.intro-media:hover>img,
.pillar__media:hover>img {
    transform: scale(1.06);
}

/* dp-shot big spans full */
.dp-shot--big {
    grid-column: 1 / -1;
}

/* caption (dp-shot에만 존재) */
.dp-shot figcaption {
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 12px;
    padding: 10px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .82);
    border: 1px solid rgba(255, 255, 255, .60);
    box-shadow: 0 12px 28px rgba(2, 6, 23, .10);
    color: rgba(15, 23, 42, .92);
    font-size: 13px;
    font-weight: 900;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    z-index: 2;
}

@supports ((-webkit-backdrop-filter: blur(12px)) or (backdrop-filter: blur(12px))) {
    .dp-shot figcaption {
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
    }
}

/* =========================================================
   FALLBACK (media-fallback) — 예쁘게
   - 이미지 onerror로 img가 제거되면 figure에 .is-fallback 붙음
========================================================= */
.media-fallback {
    position: absolute;
    inset: 0;
    display: none;
    /* 기본 숨김 */
    place-items: center;
    text-align: center;
    padding: 26px;
    gap: 10px;
    z-index: 1;
}

.is-fallback .media-fallback {
    display: grid;
}

/* fallback background 강화 */
.intro-media.is-fallback,
.pillar__media.is-fallback {
    background:
        radial-gradient(700px 260px at 30% 18%, rgba(0, 100, 0, .14), transparent 60%),
        linear-gradient(180deg, #eef2f7 0%, #f8fafc 100%) !important;
}

.media-fallback__icon {
    width: 62px;
    height: 62px;
    border-radius: 20px;
    display: grid;
    place-items: center;
    font-size: 26px;
    color: var(--brand);

    background: rgba(255, 255, 255, .72);
    border: 1px solid rgba(255, 255, 255, .62);
    box-shadow: 0 14px 34px rgba(2, 6, 23, .12);

    position: relative;
}

/* 아이콘 뒤에 은은한 링 */
.media-fallback__icon::after {
    content: "";
    position: absolute;
    inset: -10px;
    border-radius: 24px;
    background: radial-gradient(circle, rgba(0, 100, 0, .14), transparent 62%);
    z-index: -1;
}

.media-fallback__text {
    font-weight: 950;
    letter-spacing: -0.02em;
    color: rgba(15, 23, 42, .90);
    font-size: 15px;
}

/* 작은 서브 텍스트 느낌(원하면 HTML에 추가 가능) */
.media-fallback__text::after {
    content: "이미지 로딩 실패";
    display: block;
    margin-top: 6px;
    font-weight: 800;
    font-size: 12px;
    color: rgba(15, 23, 42, .55);
}

/* =========================================================
   SECTIONS / CARDS
========================================================= */
.ideology-section {
    padding: clamp(26px, 3.8vw, 60px) 0;
}

.ideology-card,
.pillar,
.values-card {
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

@supports ((-webkit-backdrop-filter: blur(10px)) or (backdrop-filter: blur(10px))) {

    .ideology-card,
    .pillar,
    .values-card {
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }
}

.ideology-card {
    padding: var(--pad-xl);
}

/* subtle hairline */
.ideology-card::before,
.pillar::before,
.values-card::before {
    content: "";
    display: block;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 100, 0, .22), transparent);
}

/* intro */
.intro-grid {
    margin-top: 18px;
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: clamp(14px, 2.6vw, 28px);
    align-items: start;
    min-width: 0;
}

.intro-text p {
    margin: 0 0 12px;
    color: rgba(15, 23, 42, .84);
}

.intro-quote {
    margin-top: 14px;
    padding: 14px;
    border-radius: 18px;
    border: 1px solid rgba(0, 100, 0, .20);
    background: linear-gradient(135deg, rgba(0, 100, 0, .10), rgba(255, 255, 255, .78));
    box-shadow: 0 10px 22px rgba(2, 6, 23, .06);
}

/* =========================================================
   PILLARS
========================================================= */
.pillar {
    margin-top: 18px;
    padding: var(--pad-lg);
    transition: transform .25s ease, box-shadow .25s ease;
}

.pillar:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.pillar__grid {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: clamp(14px, 2.6vw, 28px);
    align-items: center;
    min-width: 0;
}

.pillar__grid--reverse {
    grid-template-columns: .9fr 1.1fr;
}

.pillar__kicker {
    margin: 0 0 6px;
    font-size: 12px;
    color: var(--muted);
    letter-spacing: .16em;
    text-transform: uppercase;
}

.pillar__title {
    margin: 0 0 10px;
    font-size: clamp(16px, 2.05vw, 22px);
    letter-spacing: -0.03em;
}

.pillar__desc {
    margin: 0 0 14px;
    color: rgba(15, 23, 42, .82);
    font-size: var(--fz-body);
}

.pillar__bullets {
    margin: 0;
    padding-left: 18px;
    color: rgba(15, 23, 42, .80);
}

.pillar__bullets li {
    margin: 7px 0;
}

.pillar__bullets li::marker {
    color: var(--brand2);
}

/* =========================================================
   VALUES
========================================================= */
.ideology-section--values {
    padding-bottom: clamp(42px, 5vw, 74px);
}

.values-card {
    padding: var(--pad-xl);
    border: 1px solid rgba(0, 100, 0, .18);
    background:
        radial-gradient(1200px 420px at 20% 0%, rgba(0, 100, 0, .14), transparent 55%),
        radial-gradient(900px 360px at 90% 10%, rgba(0, 100, 0, .10), transparent 55%),
        rgba(255, 255, 255, .74);
    box-shadow: var(--shadow-lg);
}

.values-grid {
    margin-top: 18px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    min-width: 0;
}

.value-item {
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, .74);
    padding: 18px;
    box-shadow: 0 12px 28px rgba(2, 6, 23, .08);
    transition: transform .25s ease, box-shadow .25s ease;
}

@supports ((-webkit-backdrop-filter: blur(10px)) or (backdrop-filter: blur(10px))) {
    .value-item {
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }
}

.value-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.value-icon {
    width: 46px;
    height: 46px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: rgba(255, 255, 255, .70);
    border: 1px solid rgba(255, 255, 255, .62);
    color: var(--brand);
    font-size: 20px;
    margin-bottom: 10px;
    box-shadow: 0 10px 22px rgba(2, 6, 23, .08);
}

.value-title {
    margin: 0 0 6px;
    font-size: 16px;
    letter-spacing: -0.02em;
}

.value-desc {
    margin: 0;
    color: rgba(15, 23, 42, .78);
    font-size: 14px;
}

.values-cta {
    margin-top: 18px;
    padding: 16px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, .76);
    border: 1px solid rgba(255, 255, 255, .62);
    box-shadow: 0 14px 30px rgba(2, 6, 23, .10);
}

@supports ((-webkit-backdrop-filter: blur(10px)) or (backdrop-filter: blur(10px))) {
    .values-cta {
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }
}

.values-cta__line {
    margin: 0 0 10px;
    color: rgba(15, 23, 42, .84);
}

.values-cta__strong {
    margin: 0;
    font-weight: 950;
    letter-spacing: -0.03em;
    color: rgba(15, 23, 42, .94);
    font-size: clamp(15px, 1.7vw, 18px);
    position: relative;
}

.values-cta__strong::after {
    content: "";
    display: block;
    height: 3px;
    width: clamp(120px, 26vw, 220px);
    margin-top: 10px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--brand), rgba(0, 100, 0, .12));
}

/* =========================================================
   RESPONSIVE
========================================================= */
@media (max-width:1024px) {
    .ideology-container {
        width: min(var(--container), calc(100% - 28px));
    }

    .dp-hero__inner {
        grid-template-columns: 1fr;
    }

    .intro-grid {
        grid-template-columns: 1fr;
    }

    .pillar__grid,
    .pillar__grid--reverse {
        grid-template-columns: 1fr;
    }

    .values-grid {
        grid-template-columns: 1fr;
    }

    .dp-hero__cards {
        grid-template-columns: 1fr;
    }
}

@media (max-width:768px) {
    .ideology-container {
        width: calc(100% - 22px);
    }

    .dp-hero__inner {
        width: calc(100% - 22px);
    }

    .dp-mosaic {
        gap: 12px;
    }

    .dp-shot,
    .intro-media,
    .pillar__media {
        border-radius: 24px;
    }

    .dp-shot figcaption {
        left: 10px;
        right: 10px;
        bottom: 10px;
        font-size: 12px;
    }

    .dp-btn {
        height: 44px;
        padding: 0 14px;
    }

    .dp-chip {
        padding: 9px 11px;
        font-size: 12.5px;
    }
}

@media (max-width:380px) {
    .ideology-container {
        width: calc(100% - 18px);
    }

    .dp-hero__inner {
        width: calc(100% - 18px);
    }

    .ideology-card,
    .pillar,
    .values-card {
        padding: 14px;
        border-radius: 20px;
    }

    .value-item {
        padding: 14px;
    }

    .values-cta {
        padding: 14px;
    }
}

/* Touch: hover 과장 제거 */
@media (hover:none) {

    .dp-shot:hover>img,
    .intro-media:hover>img,
    .pillar__media:hover>img {
        transform: scale(1.02);
    }

    .pillar:hover,
    .value-item:hover {
        transform: none;
    }

    .dp-btn:hover {
        transform: none;
        box-shadow: none;
    }
}