/* =========================================================================
   IQ Test Online — Obsidian & Gold
   로고(차콜 배경 위 골드 물음표)에서 뽑아낸 블랙 그라데이션 + 골드 액센트 테마
   ========================================================================= */

:root {
    /* 잉크: 페이지 바닥부터 표면까지 */
    --ink-950: #050506;
    --ink-900: #0a0a0c;
    --ink-850: #0f1013;
    --ink-800: #141519;
    --ink-700: #1b1c21;
    --ink-600: #24252b;

    /* 골드: 로고의 3D 금속 물음표에서 추출 */
    --gold-100: #fbf3d6;
    --gold-200: #f4e0a2;
    --gold-300: #eac96e;
    --gold-400: #d9ac3c;
    --gold-500: #b98a1f;
    --gold-600: #8a6412;

    --gold-grad: linear-gradient(135deg, #f8e6ae 0%, #e2bb52 42%, #b98a1f 78%, #8a6412 100%);
    --gold-grad-soft: linear-gradient(135deg, rgba(248, 230, 174, .16) 0%, rgba(185, 138, 31, .10) 100%);

    /* 텍스트 */
    --text: #edeae3;
    --text-2: #b6b2a9;
    --muted: #857f75;

    /* 선과 표면 */
    --line: rgba(255, 255, 255, .09);
    --line-2: rgba(255, 255, 255, .16);
    --line-gold: rgba(217, 172, 60, .28);
    --surface: linear-gradient(158deg, rgba(255, 255, 255, .055) 0%, rgba(255, 255, 255, .018) 100%);
    --surface-2: linear-gradient(158deg, rgba(255, 255, 255, .08) 0%, rgba(255, 255, 255, .03) 100%);

    /* 상태색 (다크 배경에서 눈이 편한 채도로 낮춤) */
    --ok: #63cf95;
    --warn: #e3ac52;
    --info: #78b9dc;
    --bad: #e57b7d;

    /* 그림자 */
    --shadow-1: 0 2px 10px rgba(0, 0, 0, .5);
    --shadow-2: 0 18px 44px rgba(0, 0, 0, .55);
    --shadow-gold: 0 10px 34px rgba(217, 172, 60, .16);

    --r-sm: 10px;
    --r-md: 14px;
    --r-lg: 20px;
    --r-pill: 999px;
}

/* -------------------------------------------------------------------------
   이미지 보호 / 선택 방지 (기존 정책 유지)
   ------------------------------------------------------------------------- */
img {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-user-drag: none;
    user-drag: none;
    pointer-events: none;
}

.question-image,
.option-image,
.result-item .flag .flag-img {
    -webkit-user-drag: none;
    user-drag: none;
    pointer-events: none;
}

* {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

input, textarea, button, .btn, [contenteditable="true"] {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
}

/* -------------------------------------------------------------------------
   바탕
   ------------------------------------------------------------------------- */
html {
    background: var(--ink-950);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
                 'Apple SD Gothic Neo', 'Malgun Gothic', 'Apple Color Emoji',
                 'Segoe UI Emoji', 'Noto Color Emoji', sans-serif;
    min-height: 100vh;
    color: var(--text);
    line-height: 1.65;
    background:
        radial-gradient(1100px 620px at 12% -8%, rgba(217, 172, 60, .13), transparent 62%),
        radial-gradient(900px 560px at 96% 4%, rgba(217, 172, 60, .06), transparent 58%),
        radial-gradient(700px 700px at 50% 108%, rgba(217, 172, 60, .05), transparent 60%),
        linear-gradient(180deg, #0a0a0c 0%, #0e0e12 42%, #070708 100%);
    background-attachment: fixed;
    background-color: var(--ink-950);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 미세한 필름 그레인. 넓은 검정 면이 밴딩되는 걸 막아준다 */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: .5;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.05'/%3E%3C/svg%3E");
}

main, nav, footer {
    position: relative;
    z-index: 1;
}

/* -------------------------------------------------------------------------
   타이포그래피
   ------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    color: var(--text);
    font-weight: 700;
    letter-spacing: -.015em;
    margin-bottom: 1rem;
}

.lead {
    color: var(--text-2);
    font-weight: 400;
    font-size: 1.15rem;
    line-height: 1.75;
}

.display-1, .display-3 {
    font-weight: 800;
    letter-spacing: -.03em;
    color: var(--text);
}

/* 골드 그라데이션 글자 */
.gold-text,
.percentile-title,
#iq-score,
.stats-number-large.highlight-iq,
.result-item .score {
    background: var(--gold-grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* 섹션 제목: 골드 헤어라인을 아래에 깐다 */
.section-title,
.guidelines-title,
.recent-results-title {
    color: var(--text) !important;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: .01em;
    text-align: center;
    text-shadow: none;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after,
.guidelines-title::after,
.recent-results-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 56px;
    height: 2px;
    transform: translateX(-50%);
    background: var(--gold-grad);
    border-radius: 2px;
}

.text-muted {
    color: var(--muted) !important;
}

.card-title {
    color: var(--text);
    font-weight: 700;
    margin-bottom: 1rem;
}

.card-text {
    color: var(--text-2);
    font-size: .98rem;
    line-height: 1.7;
}

/* -------------------------------------------------------------------------
   내비게이션
   ------------------------------------------------------------------------- */
.navbar {
    background: rgba(8, 8, 10, .78) !important;
    -webkit-backdrop-filter: saturate(160%) blur(16px);
    backdrop-filter: saturate(160%) blur(16px);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 1px 0 rgba(217, 172, 60, .08), 0 10px 30px rgba(0, 0, 0, .45);
    padding: .65rem 0;
    position: sticky;
    top: 0;
    z-index: 99999;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: .7rem;
    padding: 0;
}

.navbar-brand .logo-img {
    height: 42px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 3px 12px rgba(217, 172, 60, .35));
}

/* 로고 옆 워드마크 */
.brand-wordmark {
    display: flex;
    flex-direction: column;
    line-height: 1.05;
}

.brand-wordmark .bw-main {
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: .13em;
    background: var(--gold-grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-wordmark .bw-sub {
    font-size: .58rem;
    font-weight: 600;
    letter-spacing: .3em;
    color: var(--muted);
    text-transform: uppercase;
}

.navbar-nav .nav-link {
    color: var(--text-2) !important;
    font-weight: 500;
    font-size: .95rem;
    padding: .45rem .9rem !important;
    margin: 0 .15rem;
    border-radius: var(--r-sm);
    transition: color .2s ease, background .2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
    color: var(--gold-200) !important;
    background: rgba(217, 172, 60, .09);
}

/* 언어 드롭다운 */
.navbar-nav .dropdown-toggle,
.navbar-nav .dropdown-toggle:hover,
.navbar-nav .dropdown-toggle:focus {
    background: rgba(255, 255, 255, .05) !important;
    border: 1px solid var(--line) !important;
    color: var(--text) !important;
    font-weight: 600 !important;
    border-radius: var(--r-pill) !important;
    padding: .45rem 1rem !important;
    text-shadow: none !important;
    box-shadow: none !important;
}

.navbar-nav .dropdown-toggle:hover {
    border-color: var(--line-gold) !important;
    color: var(--gold-200) !important;
}

.navbar-nav .dropdown-menu {
    background: rgba(14, 14, 18, .97);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    box-shadow: var(--shadow-2);
    padding: .4rem;
    min-width: 172px;
    margin-top: .6rem;
    z-index: 99999 !important;
}

.navbar-nav .dropdown-item,
.navbar-nav .dropdown-menu .dropdown-item {
    color: var(--text-2) !important;
    font-size: .92rem;
    font-weight: 500;
    padding: .55rem .9rem;
    border-radius: var(--r-sm);
    margin: 0;
    transition: background .18s ease, color .18s ease;
}

.navbar-nav .dropdown-item:hover,
.navbar-nav .dropdown-menu .dropdown-item:hover {
    background: rgba(217, 172, 60, .12);
    color: var(--gold-100) !important;
    transform: none;
}

.navbar-nav .dropdown-item.active,
.navbar-nav .dropdown-menu .dropdown-item.active {
    background: rgba(217, 172, 60, .16);
    color: var(--gold-200) !important;
    font-weight: 700;
}

.navbar-nav .dropdown {
    z-index: 99999;
}

.navbar-toggler {
    border-color: var(--line);
}

/* -------------------------------------------------------------------------
   모달 (언어 설정)
   ------------------------------------------------------------------------- */
.modal-content {
    background: linear-gradient(160deg, #131318 0%, #0c0c0f 100%);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-2);
    color: var(--text);
}

.modal-header,
.modal-footer {
    border-color: var(--line);
}

.modal-title {
    color: var(--gold-200);
    font-size: 1.05rem;
}

.modal .btn-close {
    filter: invert(1) grayscale(1) brightness(1.6);
    opacity: .6;
}

.modal .btn-close:hover {
    opacity: 1;
}

.language-list {
    display: grid;
    gap: .5rem;
}

.language-btn,
.btn.language-btn {
    width: 100%;
    margin: 0 !important;
    text-align: left;
    justify-content: flex-start;
    padding: .8rem 1rem;
    border-radius: var(--r-sm);
    background: rgba(255, 255, 255, .035);
    border: 1px solid var(--line);
    color: var(--text-2);
    font-weight: 500;
    box-shadow: none;
    transition: background .18s ease, border-color .18s ease, color .18s ease;
}

.language-btn:hover,
.btn.language-btn:hover {
    background: rgba(217, 172, 60, .1);
    border-color: var(--line-gold);
    color: var(--gold-100);
    transform: none;
    box-shadow: none;
}

.language-btn.active,
.btn.language-btn.active {
    background: rgba(217, 172, 60, .16);
    border-color: rgba(217, 172, 60, .45);
    color: var(--gold-100);
    font-weight: 700;
}

.language-btn i,
.language-btn.active i,
.language-btn:hover i {
    color: var(--gold-300);
}

/* -------------------------------------------------------------------------
   버튼
   ------------------------------------------------------------------------- */
.btn {
    border: 1px solid transparent;
    border-radius: var(--r-pill);
    font-weight: 600;
    letter-spacing: .01em;
    padding: .72rem 1.7rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    text-decoration: none;
    transition: transform .18s ease, box-shadow .18s ease, background .18s ease,
                border-color .18s ease, color .18s ease;
    transform: translateZ(0);
}

.btn:focus-visible {
    outline: 2px solid var(--gold-400);
    outline-offset: 2px;
    box-shadow: none;
}

/* 주 버튼: 골드 필 */
.btn-primary,
.btn-primary:active {
    background: var(--gold-grad);
    color: #1a1206 !important;
    border-color: rgba(255, 255, 255, .18);
    box-shadow: 0 6px 20px rgba(217, 172, 60, .28), inset 0 1px 0 rgba(255, 255, 255, .45);
}

.btn-primary:hover,
.btn-primary:focus {
    color: #1a1206 !important;
    background: linear-gradient(135deg, #fdf0c4 0%, #ecc768 42%, #c8961f 78%, #9a7014 100%);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(217, 172, 60, .38), inset 0 1px 0 rgba(255, 255, 255, .5);
}

/* 보조 강조: 골드 아웃라인 */
.btn-success {
    background: rgba(217, 172, 60, .1);
    color: var(--gold-200) !important;
    border-color: rgba(217, 172, 60, .42);
    box-shadow: none;
}

.btn-success:hover,
.btn-success:focus {
    background: rgba(217, 172, 60, .2);
    border-color: rgba(217, 172, 60, .7);
    color: var(--gold-100) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

/* 조용한 버튼 */
.btn-secondary,
.btn-outline-primary:not(.option-btn),
.btn-outline-light {
    background: rgba(255, 255, 255, .045);
    color: var(--text-2) !important;
    border-color: var(--line);
    box-shadow: none;
}

.btn-secondary:hover,
.btn-outline-primary:not(.option-btn):hover,
.btn-outline-light:hover {
    background: rgba(255, 255, 255, .09);
    border-color: var(--line-2);
    color: var(--text) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-1);
}

.btn:disabled,
.btn.disabled {
    opacity: .38;
    transform: none !important;
    box-shadow: none !important;
    cursor: not-allowed;
}

/* -------------------------------------------------------------------------
   표면(카드) 공통
   ------------------------------------------------------------------------- */
.hero-section,
.feature-card,
.assessment-card,
.result-card,
.metric-card,
.recent-results,
.stats-card,
.iq-percentile-card,
#question-container,
#loading,
#submit-container {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-2);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

/* -------------------------------------------------------------------------
   홈 — 히어로
   ------------------------------------------------------------------------- */
.hero-section {
    position: relative;
    overflow: hidden;
    padding: 4.5rem 3rem;
    margin: 2rem 0 3rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* 위쪽 골드 하이라이트 스트로크 */
.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 12%;
    right: 12%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(217, 172, 60, .55), transparent);
}

/* 뒤에서 은은하게 도는 골드 광원 */
.hero-section::after {
    content: '';
    position: absolute;
    width: 620px;
    height: 620px;
    top: -300px;
    left: 50%;
    transform: translateX(-50%);
    background: radial-gradient(circle, rgba(217, 172, 60, .16) 0%, transparent 62%);
    pointer-events: none;
}

.hero-section > * {
    position: relative;
    z-index: 1;
}

.hero-section h1 {
    font-size: clamp(2rem, 5vw, 3.1rem);
    font-weight: 800;
    letter-spacing: -.03em;
    line-height: 1.35;
    padding-bottom: .08em;
    margin-bottom: 1.3rem;
    min-height: auto;
    display: block;
    background: linear-gradient(180deg, #ffffff 0%, #cfcabf 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-section .lead {
    max-width: 620px;
    margin: 0 auto 2.2rem;
    color: var(--text-2);
    font-size: 1.1rem;
    min-height: auto;
    display: block;
}

.hero-section .btn-lg {
    padding: 1rem 2.6rem !important;
    font-size: 1.05rem;
}

/* -------------------------------------------------------------------------
   홈 — 통계 배너
   ------------------------------------------------------------------------- */
.stats-section {
    margin: 3.5rem 0;
}

.stats-card {
    position: relative;
    overflow: hidden;
    padding: 3rem 2.5rem;
    text-align: center;
    background: linear-gradient(158deg, rgba(217, 172, 60, .1) 0%, rgba(255, 255, 255, .02) 55%, rgba(217, 172, 60, .06) 100%);
    border-color: var(--line-gold);
}

/* 천천히 지나가는 광택 한 줄 */
.stats-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, transparent 38%, rgba(255, 255, 255, .07) 48%, transparent 58%);
    transform: translateX(-100%);
    animation: sheen 6s ease-in-out infinite;
    pointer-events: none;
}

.stats-content {
    position: relative;
    z-index: 1;
}

.stats-highlight {
    margin-bottom: 1.4rem;
    line-height: 1.9;
}

.stats-number-large {
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    font-weight: 800;
    letter-spacing: -.03em;
    color: var(--text);
    margin: 0 .4rem;
    display: inline-block;
    vertical-align: baseline;
}

.stats-number-large.highlight-iq {
    filter: drop-shadow(0 0 18px rgba(217, 172, 60, .38));
}

.stats-label {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-2);
    margin: 0 .2rem;
}

.stats-question {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--line);
}

.stats-question span {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -.01em;
    color: var(--gold-200);
}

/* -------------------------------------------------------------------------
   홈 — 기능 카드
   ------------------------------------------------------------------------- */
.feature-card {
    padding: 2.2rem 1.75rem;
    margin-bottom: 1.5rem;
    height: 100%;
    min-height: 240px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20%;
    right: 20%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(217, 172, 60, .35), transparent);
    opacity: 0;
    transition: opacity .25s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--line-gold);
    box-shadow: var(--shadow-2), var(--shadow-gold);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card .card-body {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    height: 100%;
}

.feature-card .card-title {
    font-size: 1.1rem;
    min-height: auto;
    display: block;
    margin-bottom: .75rem;
}

.feature-card .card-text {
    min-height: auto;
    display: block;
    flex-grow: 1;
}

.feature-icon {
    width: 58px;
    height: 58px;
    margin: 0 auto 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    border-radius: 16px;
    color: var(--gold-300);
    background: var(--gold-grad-soft);
    border: 1px solid var(--line-gold);
    text-shadow: 0 0 18px rgba(217, 172, 60, .45);
}

/* -------------------------------------------------------------------------
   홈 — 응시 안내
   ------------------------------------------------------------------------- */
.guideline-list {
    max-width: 520px;
    margin: 0 auto;
}

.guideline-list li {
    margin-bottom: .55rem;
}

.guideline-list .guideline-item {
    display: flex;
    align-items: center;
    gap: .85rem;
    padding: .85rem 1.1rem;
    border-radius: var(--r-md);
    background: rgba(255, 255, 255, .03);
    border: 1px solid var(--line);
    color: var(--text-2);
    font-size: .98rem;
    font-weight: 500;
    text-align: left;
    transition: border-color .2s ease, background .2s ease;
}

.guideline-list .guideline-item:hover {
    border-color: var(--line-gold);
    background: rgba(217, 172, 60, .06);
}

.guideline-list .guideline-item i {
    flex-shrink: 0;
    width: 20px;
    text-align: center;
    color: var(--gold-400) !important;
    font-size: .95rem;
    text-shadow: none;
}

.guideline-list .guideline-item span {
    flex: 1;
    text-align: left;
}

/* -------------------------------------------------------------------------
   IQ 분포표
   ------------------------------------------------------------------------- */
.iq-percentile-section {
    margin: 3.5rem 0 2rem;
    padding: 0;
    background: transparent;
}

.iq-percentile-card {
    position: relative;
    overflow: hidden;
    padding: 2.75rem 2.25rem;
}

.percentile-title {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -.01em;
    text-align: center;
    margin-bottom: 2rem;
    filter: drop-shadow(0 0 16px rgba(217, 172, 60, .25));
}

/* 평균/표준편차 — 그래프가 임의가 아니라 통계 지표에 근거함을 작게 알려 신뢰도를 보탠다 */
.percentile-stat-caption {
    text-align: center;
    margin: -.75rem 0 1.75rem;
    font-size: .78rem;
    font-weight: 600;
    letter-spacing: .03em;
    color: var(--muted);
    text-shadow: none;
}

.percentile-stat-caption .stat-caption-sep {
    margin: 0 .55rem;
    opacity: .5;
}

/* 정규분포 곡선 — 등급 구간을 색 램프로 채워서 보여준다 */
.percentile-chart-wrap {
    max-width: 720px;
    margin: 0 auto 1.5rem;
    padding: 1.1rem 1rem .4rem;
    border-radius: var(--r-md);
    background: rgba(255, 255, 255, .025);
    border: 1px solid var(--line);
}

.percentile-chart-wrap canvas {
    display: block;
    width: 100%;
    height: auto;
}

.percentile-legend {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: .5rem;
    position: relative;
    z-index: 1;
}

.percentile-legend-item {
    display: grid;
    grid-template-columns: auto 4.6rem 1fr auto;
    align-items: center;
    gap: .85rem;
    padding: .8rem 1.1rem;
    background: rgba(255, 255, 255, .035);
    border: 1px solid var(--line);
    border-radius: var(--r-sm);
    transition: background .22s ease, transform .22s ease, box-shadow .22s ease;
}

.percentile-legend-item:hover {
    background: rgba(217, 172, 60, .09);
    transform: translateX(4px);
    box-shadow: -3px 0 0 0 var(--gold-400), var(--shadow-1);
}

.legend-swatch {
    width: .85rem;
    height: .85rem;
    border-radius: 50%;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .3);
    flex-shrink: 0;
}

.legend-iq {
    font-size: 1.02rem;
    font-weight: 800;
    letter-spacing: -.01em;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.legend-label {
    font-size: .92rem;
    font-weight: 600;
    color: var(--text-2);
    text-align: left;
    text-shadow: none;
}

.legend-pct {
    font-size: .85rem;
    font-weight: 600;
    color: var(--muted);
    white-space: nowrap;
    text-shadow: none;
}

/* -------------------------------------------------------------------------
   최근 결과
   ------------------------------------------------------------------------- */
.recent-results {
    padding: 1.75rem;
    width: 100%;
}

.result-item {
    background: rgba(255, 255, 255, .035);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    box-shadow: none;
    padding: .85rem .6rem;
    margin-bottom: 0;
    min-height: 118px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    gap: .45rem;
    width: 100%;
    transition: border-color .2s ease, background .2s ease, transform .2s ease;
}

.result-item:hover {
    transform: translateY(-3px);
    background: rgba(217, 172, 60, .07);
    border-color: var(--line-gold);
    box-shadow: var(--shadow-1);
}

.result-item .name {
    width: 100%;
    padding: 0;
    margin: 0;
    background: none;
    border-radius: 0;
    font-size: .82rem;
    font-weight: 500;
    color: var(--text-2);
    line-height: 1.3;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    max-height: 2.6em;
    overflow: hidden;
    word-break: break-word;
    box-sizing: border-box;
}

.result-item .flag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.result-item .flag .flag-img {
    width: auto;
    height: 2rem;
    max-width: 3rem;
    object-fit: contain;
    display: block;
    border: 1px solid var(--line);
    border-radius: 3px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .5);
    filter: saturate(.9) brightness(.95);
}

.result-item .score {
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: -.01em;
    text-align: center;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.result-item .time {
    font-size: .68rem;
    font-weight: 500;
    color: var(--muted);
    text-align: center;
    line-height: 1;
}

/* -------------------------------------------------------------------------
   응시 페이지
   ------------------------------------------------------------------------- */
.assessment-card,
.result-card {
    margin: 2rem 0;
    overflow: hidden;
}

.card-header {
    background: linear-gradient(180deg, rgba(255, 255, 255, .05), rgba(255, 255, 255, .01));
    border-bottom: 1px solid var(--line);
    padding: 1.5rem 2rem;
    font-weight: 700;
    color: var(--text);
}

.card-header h3 {
    font-size: 1.2rem;
    letter-spacing: -.01em;
    margin: 0;
    color: var(--text);
}

.card-header h3 i,
.card-header i {
    color: var(--gold-400);
}

.assessment-card > .card-body,
.result-card > .card-body {
    padding: 2rem;
}

/* 카드 안에 들어가는 블록은 표면을 한 번 더 씌우지 않는다 (테두리 겹침 방지) */
.assessment-card #question-container,
.assessment-card #loading,
.assessment-card #submit-container {
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    margin: 0;
}

/* 진행 막대는 카드 본문 맨 위에 가로선으로 눕힌다 */
.assessment-card #question-container {
    padding: 1.75rem 0 0;
}

#timer,
#progress {
    font-size: .92rem;
    font-weight: 700;
    letter-spacing: .04em;
    padding: .5rem 1.1rem;
    border-radius: var(--r-pill);
    font-variant-numeric: tabular-nums;
    border: 1px solid var(--line);
    box-shadow: none;
}

#timer {
    background: rgba(217, 172, 60, .12) !important;
    border-color: var(--line-gold);
    color: var(--gold-200) !important;
}

#progress {
    background: rgba(255, 255, 255, .05) !important;
    color: var(--text-2) !important;
}

#question-container {
    padding: 2rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

#question-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    border-radius: 3px;
    background: rgba(255, 255, 255, .07);
}

#progress-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 3px;
    border-radius: 3px;
    background: var(--gold-grad);
    box-shadow: 0 0 12px rgba(217, 172, 60, .6);
    transition: width .35s ease;
    z-index: 10;
}

#question-text {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text);
    text-align: center;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

/* 문제 도판: 흑백 선화라 반전시키면 다크에서 그대로 살아난다 */
#question-image-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 350px;
    min-height: 350px;
    width: 100%;
    padding: 1.25rem;
    border-radius: var(--r-md);
    background: rgba(255, 255, 255, .025);
    border: 1px solid var(--line);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .04);
}

.question-image {
    max-width: 100%;
    max-height: 100%;
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    box-shadow: none;
    filter: invert(1) brightness(1.05);
}

/* 선지.
   원본 이미지의 가로세로 비가 문항마다, 심지어 한 문항 안에서도 제각각이라
   (Q8/Q11/Q20은 0.27 ~ 2.5까지 섞여 있다) 높이를 이미지에 맡기면 타일이 들쭉날쭉해진다.
   그래서 타일은 --option-size 한 변짜리 정사각형으로 고정하고,
   그림은 그 안에서 object-fit: contain으로 맞춘다. 크기 조절은 --option-size만 바꾸면 된다. */
#options-container {
    --option-size: 150px;
    display: grid;
    /* 칸을 화면 폭에 맞춰 늘리지 않는다. 타일 크기는 --option-size가 정하고 묶음만 가운데로 */
    grid-template-columns: repeat(2, minmax(0, var(--option-size)));
    justify-content: center;
    gap: 12px;
    margin-bottom: 30px;
    align-items: start;
}

/* 선지가 5개 이상이면 3열 */
#options-container.cols-3 {
    grid-template-columns: repeat(3, minmax(0, var(--option-size)));
}

.option-container {
    width: 100%;
    margin: 0;
    aspect-ratio: 1;
    transition: none;
}

.option-btn,
.option-btn.btn-outline-primary {
    width: 100%;
    height: 100%;
    padding: 10px;
    margin-bottom: 0;
    border-radius: var(--r-md);
    background: rgba(255, 255, 255, .035);
    border: 1px solid var(--line);
    color: var(--text-2) !important;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: none;
    transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
}

.option-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .07), transparent);
    transition: left .55s ease;
}

.option-btn:hover::before {
    left: 100%;
}

.option-btn:hover,
.option-btn.btn-outline-primary:hover {
    background: rgba(255, 255, 255, .07) !important;
    border-color: var(--line-2);
    color: var(--text) !important;
    transform: none;
    box-shadow: var(--shadow-1);
}

.option-btn.selected,
.option-btn.btn-primary {
    background: rgba(217, 172, 60, .13) !important;
    border-color: rgba(217, 172, 60, .6);
    color: var(--gold-100) !important;
    box-shadow: 0 0 0 1px rgba(217, 172, 60, .35), 0 10px 28px rgba(217, 172, 60, .2);
    transform: none;
}

.option-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: invert(1) brightness(1.05);
    transition: filter .2s ease;
}

.option-btn.btn-primary .option-image {
    filter: invert(1) brightness(1.15) sepia(.45) saturate(2.4) hue-rotate(-8deg);
}

/* -------------------------------------------------------------------------
   모달 (이어하기 확인 등)
   ------------------------------------------------------------------------- */
.iq-modal {
    position: fixed;
    inset: 0;
    z-index: 1080;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.iq-modal[hidden] { display: none; }

.iq-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(4, 4, 6, .74);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    opacity: 0;
    transition: opacity .18s ease;
}

.iq-modal.is-open .iq-modal-backdrop { opacity: 1; }

.iq-modal-panel {
    position: relative;
    width: 100%;
    max-width: 420px;
    padding: 2rem 1.75rem 1.5rem;
    text-align: center;
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    background: var(--surface-2), var(--ink-850);
    background-color: var(--ink-850);
    box-shadow: var(--shadow-2);
    opacity: 0;
    transform: translateY(10px) scale(.985);
    transition: opacity .18s ease, transform .18s ease;
}

.iq-modal.is-open .iq-modal-panel {
    opacity: 1;
    transform: none;
}

/* 카드 상단의 금색 실선 — 결과/랜딩 카드와 같은 장식 */
.iq-modal-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 18%;
    right: 18%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--line-gold), transparent);
}

.iq-modal-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--line-gold);
    background: var(--gold-grad-soft);
    color: var(--gold-300);
    font-size: 1.25rem;
}

.iq-modal-title {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -.015em;
    color: var(--text);
    margin-bottom: .6rem;
}

.iq-modal-desc {
    font-size: .92rem;
    line-height: 1.65;
    color: var(--text-2);
    margin-bottom: 1.25rem;
}

.iq-modal-facts {
    display: flex;
    gap: .6rem;
    margin-bottom: 1.4rem;
}

.iq-modal-fact {
    flex: 1;
    padding: .75rem .5rem;
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    background: rgba(255, 255, 255, .035);
}

.iq-modal-fact[hidden] { display: none; }

.iq-modal-fact-label {
    display: block;
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: .3rem;
}

.iq-modal-fact-value {
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: -.01em;
    color: var(--gold-200);
}

.iq-modal-actions {
    display: flex;
    flex-direction: column;
    gap: .55rem;
}

.iq-modal-btn {
    width: 100%;
    padding: .85rem 1.25rem;
    border-radius: var(--r-pill);
    font-size: .96rem;
    font-weight: 700;
    cursor: pointer;
    transition: background .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}

.iq-modal-btn[hidden] { display: none; }

.iq-modal-btn-primary {
    border: 1px solid rgba(255, 255, 255, .18);
    background: var(--gold-grad);
    color: #1a1206;
    box-shadow: 0 6px 20px rgba(217, 172, 60, .28), inset 0 1px 0 rgba(255, 255, 255, .45);
}

.iq-modal-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(217, 172, 60, .36), inset 0 1px 0 rgba(255, 255, 255, .5);
}

.iq-modal-btn-ghost {
    border: 1px solid var(--line);
    background: transparent;
    color: var(--text-2);
}

.iq-modal-btn-ghost:hover {
    border-color: var(--line-2);
    background: rgba(255, 255, 255, .05);
    color: var(--text);
}

@media (max-width: 576px) {
    .iq-modal-panel { padding: 1.6rem 1.25rem 1.25rem; }
    .iq-modal-title { font-size: 1.08rem; }
    .iq-modal-desc { font-size: .88rem; }
    .iq-modal-fact-value { font-size: 1rem; }
}

/* 이동 버튼 */
#prev-btn,
#next-btn {
    padding: .85rem 2.2rem;
    min-width: 140px;
    font-size: 1rem;
    font-weight: 700;
    border-radius: var(--r-pill);
    position: relative;
    overflow: hidden;
}

#prev-btn:hover,
#next-btn:hover {
    box-shadow: var(--shadow-gold);
}

#prev-btn:disabled:hover {
    box-shadow: none;
}

/* 로딩 / 제출 */
#loading,
#submit-container {
    text-align: center;
    padding: 3.5rem 1.5rem;
    margin: 1.25rem 0;
}

.spinner-border {
    width: 2.75rem;
    height: 2.75rem;
    color: var(--gold-400);
    border-width: .2em;
}

#loading .spinner-border {
    width: 3rem;
    height: 3rem;
    margin-bottom: 1rem;
}

#loading p,
#submit-container p {
    color: var(--text-2);
    font-size: 1.05rem;
    margin-top: .75rem;
}

#submit-container h4 {
    font-size: 1.7rem;
    font-weight: 800;
    letter-spacing: -.02em;
    color: var(--gold-200);
    margin-bottom: 1rem;
}

#submit-btn {
    padding: .95rem 2.6rem;
    font-size: 1.05rem;
    font-weight: 700;
    border-radius: var(--r-pill);
}

/* -------------------------------------------------------------------------
   결과 페이지
   ------------------------------------------------------------------------- */
#iq-score {
    font-size: clamp(4rem, 13vw, 6.5rem);
    font-weight: 800;
    letter-spacing: -.045em;
    line-height: 1;
    margin-bottom: .5rem;
    filter: drop-shadow(0 0 34px rgba(217, 172, 60, .34));
    font-variant-numeric: tabular-nums;
}

.metric-card {
    padding: 1.4rem;
    margin-bottom: 1rem;
    transition: border-color .2s ease, transform .2s ease;
}

.metric-card:hover {
    transform: translateY(-3px);
    border-color: var(--line-gold);
    box-shadow: var(--shadow-2), var(--shadow-gold);
}

.metric-card .card-title {
    font-size: .82rem;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: .55rem;
}

.metric-card .card-title i {
    color: var(--gold-500);
}

.metric-card h3 {
    font-size: 1.9rem;
    font-weight: 800;
    letter-spacing: -.02em;
    margin: 0;
    color: var(--text) !important;
    font-variant-numeric: tabular-nums;
}

/* 결과 페이지 소제목 */
.result-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: .01em;
    color: var(--text-2);
    margin-bottom: 1.1rem;
}

.result-card h4 i {
    color: var(--gold-500);
}

/* IQ 등급 배너 */
.alert {
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    background: rgba(255, 255, 255, .035);
    color: var(--text-2);
    padding: 1.25rem 1.5rem;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
}

.alert strong {
    display: block;
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -.02em;
    color: var(--text);
    margin-bottom: .25rem;
}

.alert small {
    font-size: .92rem;
    color: var(--muted);
}

.alert-success,
.alert-info {
    background: rgba(217, 172, 60, .09);
    border-color: var(--line-gold);
}

.alert-success strong,
.alert-info strong {
    background: var(--gold-grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.alert-primary {
    background: rgba(255, 255, 255, .05);
    border-color: var(--line-2);
}

.alert-warning {
    background: rgba(227, 172, 82, .08);
    border-color: rgba(227, 172, 82, .28);
}

.alert-danger {
    background: rgba(229, 123, 125, .08);
    border-color: rgba(229, 123, 125, .28);
}

/* 분석 리스트 */
#analysis {
    color: var(--text-2);
}

#analysis ul {
    margin: 0;
    padding: 0;
    display: grid;
    gap: .5rem;
}

#analysis ul li {
    display: flex;
    align-items: flex-start;
    gap: .7rem;
    padding: .8rem 1.1rem;
    border-radius: var(--r-md);
    background: rgba(255, 255, 255, .03);
    border: 1px solid var(--line);
    color: var(--text-2);
    font-weight: 500;
    font-size: .95rem;
    line-height: 1.6;
    text-align: left;
    min-height: 0;
    justify-content: flex-start;
    text-shadow: none;
    margin: 0;
}

#analysis ul li i {
    margin-top: .25rem;
    flex-shrink: 0;
}

#analysis .text-success { color: var(--ok) !important; }
#analysis .text-warning { color: var(--warn) !important; }
#analysis .text-danger  { color: var(--bad) !important; }
#analysis .text-info    { color: var(--info) !important; }
#analysis .text-primary { color: var(--gold-400) !important; }

/* 분포 그래프 */
.distribution-wrap {
    max-width: 720px;
    margin: 0 auto;
    padding: 1rem;
    border-radius: var(--r-md);
    background: rgba(255, 255, 255, .025);
    border: 1px solid var(--line);
}

.distribution-wrap canvas {
    display: block;
    width: 100%;
    height: auto;
}

.distribution-percentile {
    margin-top: .8rem;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--gold-300);
}

.share-status {
    min-height: 20px;
    margin-top: .8rem;
    font-size: .82rem;
    color: var(--gold-400);
}

/* 문항별 요약 통계 */
.stat-card {
    background: rgba(255, 255, 255, .035);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    padding: 1.4rem 1rem;
    transition: border-color .2s ease, transform .2s ease;
}

.stat-card:hover {
    transform: translateY(-3px);
    border-color: var(--line-gold);
    background: rgba(217, 172, 60, .06);
    box-shadow: var(--shadow-1);
}

.stat-card h4 {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -.02em;
    margin-bottom: .3rem;
    text-shadow: none;
    font-variant-numeric: tabular-nums;
}

.stat-card h4.text-primary { color: var(--gold-300) !important; }
.stat-card h4.text-success { color: var(--ok) !important; }
.stat-card h4.text-info    { color: var(--text-2) !important; }

.stat-card small {
    font-size: .76rem;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--muted) !important;
    opacity: 1;
}

/* 문항별 카드 */
.question-answer-card,
.question-answer-card.card {
    background: rgba(255, 255, 255, .03);
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    overflow: hidden;
    box-shadow: none;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.question-answer-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-1);
}

.question-answer-card.border-success { border-color: rgba(99, 207, 149, .3) !important; }
.question-answer-card.border-danger  { border-color: rgba(229, 123, 125, .3) !important; }

.question-answer-card .card-header {
    padding: .7rem 1rem;
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, .03);
}

.question-answer-card .card-header.bg-success,
.question-answer-card .card-header.bg-success.bg-opacity-10 {
    background: rgba(99, 207, 149, .1) !important;
    border-color: rgba(99, 207, 149, .22) !important;
}

.question-answer-card .card-header.bg-danger,
.question-answer-card .card-header.bg-danger.bg-opacity-10 {
    background: rgba(229, 123, 125, .1) !important;
    border-color: rgba(229, 123, 125, .22) !important;
}

.question-answer-card .card-header h6 {
    font-size: .88rem;
    font-weight: 600;
    color: var(--text-2);
    margin: 0;
}

.question-answer-card .card-header h6 i {
    color: var(--gold-500);
}

.question-answer-card .card-body {
    padding: 1rem;
}

.question-answer-card small.text-muted {
    display: block;
    margin-bottom: .15rem;
    font-size: .75rem;
    font-weight: 500;
    color: var(--muted) !important;
}

.question-answer-card .fw-bold {
    font-size: 1.05rem;
}

.question-answer-card .fw-bold.text-success { color: var(--ok) !important; }
.question-answer-card .fw-bold.text-danger  { color: var(--bad) !important; }

.badge {
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .04em;
    padding: .4rem .7rem;
    border-radius: var(--r-pill);
}

.badge.bg-success {
    background: rgba(99, 207, 149, .16) !important;
    color: var(--ok) !important;
    border: 1px solid rgba(99, 207, 149, .3);
}

.badge.bg-danger {
    background: rgba(229, 123, 125, .16) !important;
    color: var(--bad) !important;
    border: 1px solid rgba(229, 123, 125, .3);
}

.progress {
    background: rgba(255, 255, 255, .07);
    border-radius: var(--r-pill);
    overflow: hidden;
}

.progress-bar,
.progress-bar.bg-info {
    background: var(--gold-grad) !important;
    border-radius: var(--r-pill);
}

/* -------------------------------------------------------------------------
   푸터
   ------------------------------------------------------------------------- */
footer {
    margin-top: 5rem;
    padding: 2.5rem 0;
    border-top: 1px solid var(--line);
    background: linear-gradient(180deg, transparent, rgba(0, 0, 0, .45));
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
}

footer p {
    margin: 0;
    color: var(--muted);
    font-size: .84rem;
    letter-spacing: .02em;
}

/* -------------------------------------------------------------------------
   애니메이션
   ------------------------------------------------------------------------- */
@keyframes sheen {
    0%   { transform: translateX(-100%); }
    45%  { transform: translateX(100%); }
    100% { transform: translateX(100%); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-24px); }
    to   { opacity: 1; transform: translateX(0); }
}

.fade-in  { animation: fadeIn .6s ease-out; }
.slide-in { animation: slideIn .6s ease-out; }

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
}

/* -------------------------------------------------------------------------
   반응형
   ------------------------------------------------------------------------- */
@media (max-width: 991.98px) {
    .navbar-nav,
    .navbar-toggler {
        display: none !important;
    }

    .btn-outline-light {
        border-radius: var(--r-sm);
        padding: .5rem .8rem;
        font-size: 1rem;
    }
}

@media (max-width: 768px) {
    body {
        background-attachment: scroll;
    }

    .navbar {
        padding: .5rem 0;
    }

    .navbar-brand .logo-img {
        height: 34px;
    }

    .brand-wordmark .bw-main { font-size: .92rem; }
    .brand-wordmark .bw-sub  { font-size: .52rem; }

    .hero-section {
        padding: 3rem 1.5rem;
        margin: 1rem 0 2rem;
        border-radius: var(--r-md);
    }

    .hero-section .lead {
        font-size: 1rem;
        margin-bottom: 1.75rem;
    }

    .stats-section {
        margin: 2.5rem 0;
    }

    .stats-card {
        padding: 2rem 1.25rem;
        border-radius: var(--r-md);
    }

    .stats-label { font-size: 1rem; }
    .stats-question span { font-size: 1.15rem; }

    .feature-card {
        padding: 1.6rem 1.25rem;
        min-height: auto;
        margin-bottom: 0;
        border-radius: var(--r-md);
    }

    .feature-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
        margin-bottom: 1rem;
    }

    .iq-percentile-card {
        padding: 1.75rem 1.25rem;
        border-radius: var(--r-md);
    }

    .percentile-title { font-size: 1.3rem; margin-bottom: 1.5rem; }

    .percentile-chart-wrap { padding: .9rem .7rem .3rem; }

    /* 폭이 좁아지면 등급/구간을 1행, 상위 %를 2행으로 내려 겹치지 않게 한다 */
    .percentile-legend-item {
        grid-template-columns: auto 4.3rem 1fr;
        row-gap: .3rem;
        padding: .7rem .9rem;
    }

    .legend-iq { font-size: .92rem; }

    .legend-pct {
        grid-column: 2 / 4;
        justify-self: start;
        font-size: .78rem;
    }

    .recent-results { padding: 1.25rem; border-radius: var(--r-md); }

    .result-item {
        padding: .7rem .5rem;
        min-height: 100px;
    }

    .result-item .name { font-size: .74rem; max-height: 2.4em; }
    .result-item .flag .flag-img { height: 1.5rem; max-width: 2.2rem; }
    .result-item .score { font-size: .95rem; }
    .result-item .time { font-size: .64rem; }

    .card-header { padding: 1.1rem 1.25rem; }
    .card-header h3 { font-size: 1.05rem; }

    #question-container {
        padding: 1.25rem;
        border-radius: var(--r-md);
    }

    #question-image-container {
        height: auto !important;
        min-height: 260px !important;
        padding: 1rem;
        margin-bottom: 1.25rem;
    }

    .question-image { max-height: 300px !important; }

    #question-container .row {
        flex-direction: column;
        gap: 0;
    }

    #question-container .col-md-7,
    #question-container .col-md-5 {
        width: 100%;
    }

    #options-container {
        --option-size: 130px;
        gap: 10px;
        padding: 0;
    }

    .option-btn {
        padding: 8px !important;
        border-radius: var(--r-md) !important;
    }

    #question-text { font-size: 1.15rem; margin-bottom: 1.25rem; }

    #timer, #progress { font-size: .85rem; padding: .45rem 1rem; }

    #prev-btn, #next-btn {
        padding: .75rem 1.5rem;
        min-width: 120px;
        font-size: .95rem;
    }

    .result-card > .card-body { padding: 1.25rem; }

    .result-card .d-flex.justify-content-center.gap-2 {
        flex-direction: column;
        gap: .75rem !important;
    }

    .result-card .btn { width: 100%; margin: 0; }

    .question-answer-card { margin-bottom: 1rem; }
    .stat-card { padding: 1rem .75rem; margin-bottom: 1rem; }
    .stat-card h4 { font-size: 1.4rem; }

    .guideline-list .guideline-item { padding: .75rem .9rem; font-size: .92rem; }

    footer { margin-top: 3rem; padding: 2rem 0; }
}

@media (max-width: 576px) {
    .hero-section { padding: 2.5rem 1.1rem; }
    .hero-section h1 { font-size: 1.85rem; }
    .hero-section .lead { font-size: .95rem; }

    .stats-number-large { font-size: 2rem; margin: 0 .25rem; }
    .stats-label { font-size: .95rem; }
    .stats-question { margin-top: 1.1rem; padding-top: 1.1rem; }
    .stats-question span { font-size: 1.05rem; }

    .recent-results { padding: .9rem; }
    .result-item { padding: .55rem .4rem; min-height: 88px; gap: .3rem; }
    .result-item .name { font-size: .68rem; max-height: 2.2em; }
    .result-item .flag .flag-img { height: 1.25rem; max-width: 1.9rem; }
    .result-item .score { font-size: .88rem; }
    .result-item .time { font-size: .6rem; }

    .percentile-title { font-size: 1.15rem; }
    .iq-percentile-card { padding: 1.25rem .9rem; }

    #question-image-container { min-height: 200px !important; padding: .75rem; }
    .question-image { max-height: 220px !important; }

    .option-btn { padding: 7px !important; }
    #options-container { --option-size: 112px; gap: 8px; }

    #question-text { font-size: 1.05rem; }
    #question-container { padding: 1rem; }

    #timer, #progress { font-size: .78rem; padding: .38rem .8rem; }

    #prev-btn, #next-btn { padding: .65rem 1.15rem; min-width: 100px; font-size: .88rem; }

    #loading, #submit-container { padding: 2rem 1rem; }
    #submit-container h4 { font-size: 1.3rem; }
    #submit-btn { padding: .8rem 1.8rem; font-size: 1rem; }

    .card-header { padding: .9rem 1rem; }
    .question-answer-card .card-body { padding: .75rem; }
    .question-answer-card .card-header { padding: .5rem .75rem; }
    .stat-card { padding: .75rem .5rem; }
    .stat-card h4 { font-size: 1.2rem; }

    .result-card .btn { padding: .75rem 1.25rem; font-size: .95rem; }
}