/* ==================== CSS 변수 ==================== */
:root {
    /* 주요 색상 */
    --primary-color: #6366f1;
    --danger-color: #ef4444;

    /* 회색 음영 */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-900: #111827;

    /* 레이아웃 */
    --header-height: 64px;
    --sidebar-width: 260px;


    /* 그림자 */
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

/* ==================== 전역 스타일 ==================== */
* {
    box-sizing: border-box;
    scrollbar-width: thin;
    scrollbar-color: var(--gray-200) transparent;
}

body {
    margin: 0;
    font-family: "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--gray-50);
    color: var(--gray-900);
}

/* ==================== 사이트 헤더 (Top Navigation) ==================== */
.brand-topnav {
    background: white;
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0.75rem 0;
}

.brand-topnav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand-topnav-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.brand-topnav-end {
    flex-shrink: 0;
    align-items: center;
}

.brand-topnav-logo img {
    height: 48px;
    width: auto;
}

.brand-topnav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.25rem;
    align-items: center;
    justify-content: center;
    flex: 1;
}

.brand-topnav-menu li a {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--gray-700);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: color 0.2s;
    white-space: nowrap;
}

.brand-topnav-menu li a:hover {
    color: var(--brand-accent-red);
}

.brand-topnav-btn {
    background: var(--brand-gradient);
    color: white !important;
    text-decoration: none !important;
    font-weight: 600 !important;
    border-radius: 2rem;
    padding: 0.5rem 1.25rem !important;
    transition: transform 0.2s, box-shadow 0.2s;
}

.brand-topnav-btn:hover {
    background: linear-gradient(135deg, #a82828, #c84a20);
    color: white !important;
}

.brand-topnav-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-700);
    cursor: pointer;
    padding: 0.5rem;
}

.brand-topnav-mobile {
    display: flex;
    flex-direction: column;
    padding: 1rem;
    border-top: 1px solid var(--gray-200);
    margin-top: 0.75rem;
}

.brand-topnav-mobile a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--gray-700);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 0.5rem;
    transition: background-color 0.2s;
}

.brand-topnav-mobile a:hover {
    background: var(--gray-100);
}

/* ==================== 유틸리티 ==================== */
.cursor-pointer {
    cursor: pointer;
}

/* ==================== Brand Intelligence Platform ==================== */
:root {
    /* 브랜드 다크 테마 색상 */
    --brand-bg-dark: #0a0a0a;
    --brand-bg-section: #111111;
    --brand-bg-card: #1a1a1a;
    --brand-bg-card-hover: #242424;
    --brand-accent-red: #c83232;
    --brand-accent-orange: #e85d2c;
    --brand-accent-gold: #d4a037;
    --brand-gradient: linear-gradient(135deg, #c83232, #e85d2c);
    --brand-text-primary: #f5f5f5;
    --brand-text-secondary: #a0a0a0;
    --brand-text-muted: #666666;
    --brand-border: #2a2a2a;
    --brand-glow: 0 0 20px rgba(200, 50, 50, 0.3);
    --brand-glow-strong: 0 0 40px rgba(200, 50, 50, 0.5);
}

/* 다크 페이지 래퍼 */
.brand-page {
    background: var(--brand-bg-dark);
    color: var(--brand-text-primary);
    min-height: 100vh;
    font-family: "Noto Sans KR", sans-serif;
}

/* 히어로 섹션 */
.brand-hero {
    padding: 6rem 0 4rem;
    text-align: center;
    background: radial-gradient(ellipse at center top, rgba(200, 50, 50, 0.15) 0%, transparent 60%);
}

.brand-hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1.5rem;
}

.brand-hero-subtitle {
    font-size: 1.25rem;
    color: var(--brand-text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
    line-height: 1.8;
}

/* 그라데이션 텍스트 */
.brand-gradient-text {
    background: var(--brand-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 다크 카드 */
.brand-card {
    background: var(--brand-bg-card);
    border: 1px solid var(--brand-border);
    border-radius: 1rem;
    padding: 2rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.brand-dimension-card:hover ~ .brand-card,
.brand-hero .brand-card:hover {
    transform: none;
    box-shadow: none;
}

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

/* 히어로 내 폼 카드 */
.brand-hero .brand-card {
    transform: none;
    text-align: left;
}

.brand-hero .brand-card:hover {
    transform: none;
    box-shadow: none;
}

/* 지표 카드 */
.brand-dimension-card {
    background: var(--brand-bg-card);
    border: 1px solid var(--brand-border);
    border-radius: 0.75rem;
    padding: 1.5rem;
    text-align: center;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.brand-dimension-card:hover {
    border-color: var(--brand-accent-red);
    box-shadow: var(--brand-glow);
}

.brand-dimension-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 1rem;
    background: rgba(200, 50, 50, 0.15);
    color: var(--brand-accent-red);
}

/* 다크 테마 폼 */
.brand-form {
    text-align: left;
}

.brand-form .form-control {
    background: var(--brand-bg-card);
    border: 1px solid var(--brand-border);
    color: var(--brand-text-primary);
    border-radius: 0.75rem;
    padding: 0.875rem 1.25rem;
    font-size: 1rem;
}

.brand-form .form-control:focus {
    border-color: var(--brand-accent-red);
    box-shadow: 0 0 0 3px rgba(200, 50, 50, 0.2);
    background: var(--brand-bg-card);
    color: var(--brand-text-primary);
}

.brand-form .form-control::placeholder {
    color: var(--brand-text-muted);
}

/* CTA 버튼 */
.btn-brand {
    background: var(--brand-gradient);
    color: white;
    border: none;
    border-radius: 0.75rem;
    padding: 0.875rem 2.5rem;
    font-size: 1.125rem;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-brand:hover {
    transform: translateY(-2px);
    box-shadow: var(--brand-glow-strong);
    color: white;
}

.btn-brand:disabled {
    opacity: 0.6;
    transform: none;
    box-shadow: none;
}

.btn-brand-outline {
    background: transparent;
    color: var(--brand-accent-red);
    border: 2px solid var(--brand-accent-red);
    border-radius: 0.75rem;
    padding: 0.75rem 2rem;
    font-weight: 600;
    transition: all 0.2s;
}

.btn-brand-outline:hover {
    background: var(--brand-accent-red);
    color: white;
}

/* 점수 원형 게이지 (CSS conic-gradient) */
.brand-score-circle {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto;
}

.brand-score-ring {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(
        var(--score-color, var(--brand-accent-red)) var(--score-percent, 0%),
        var(--brand-border) var(--score-percent, 0%)
    );
    position: relative;
}

.brand-score-ring-inner {
    position: absolute;
    top: 12px;
    left: 12px;
    right: 12px;
    bottom: 12px;
    border-radius: 50%;
    background: var(--brand-bg-card);
}

.brand-score-circle .score-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    font-weight: 700;
}

.brand-score-circle .score-label {
    position: absolute;
    top: 65%;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.875rem;
    color: var(--brand-text-secondary);
}

/* 점수 프로그레스 바 */
.brand-progress {
    height: 8px;
    background: var(--brand-border);
    border-radius: 4px;
    overflow: hidden;
}

.brand-progress-bar {
    height: 100%;
    border-radius: 4px;
    transition: width 1.5s ease-in-out;
}

.brand-progress-bar.score-high {
    background: linear-gradient(90deg, #10b981, #34d399);
}

.brand-progress-bar.score-mid {
    background: linear-gradient(90deg, #d4a037, #f59e0b);
}

.brand-progress-bar.score-low {
    background: linear-gradient(90deg, #c83232, #ef4444);
}

/* 이슈 카드 */
.brand-issue-card {
    background: rgba(200, 50, 50, 0.08);
    border: 1px solid rgba(200, 50, 50, 0.2);
    border-radius: 0.75rem;
    padding: 1.25rem;
}

.brand-issue-card .issue-number {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--brand-accent-red);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    flex-shrink: 0;
}

/* 분석 중 애니메이션 */
.brand-analyzing {
    text-align: center;
    padding: 4rem 0;
}

.brand-analyzing-dots span {
    display: inline-block;
    width: 12px;
    height: 12px;
    margin: 0 4px;
    background: var(--brand-accent-red);
    border-radius: 50%;
    animation: brand-pulse 1.4s infinite ease-in-out both;
}

.brand-analyzing-dots span:nth-child(1) { animation-delay: -0.32s; }
.brand-analyzing-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes brand-pulse {
    0%, 80%, 100% { transform: scale(0); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}

/* 브랜드 푸터 */
.brand-footer {
    background: var(--brand-bg-dark);
    padding: 2.5rem 0 2rem;
    text-align: center;
    color: var(--brand-text-muted);
    font-size: 0.85rem;
}

.brand-footer-top {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.brand-footer-logo {
    height: 48px;
    width: auto;
    margin-bottom: -6px;
}

.brand-footer-contact {
    color: var(--brand-text-secondary);
    line-height: 1.8;
}

.brand-footer-divider {
    margin: 0 0.4rem;
    color: var(--brand-text-muted);
}

.brand-footer-address {
    list-style: none;
    padding: 0 0 1rem;
    margin: 0 auto;
    display: inline-block;
    text-align: left;
}

.brand-footer-address li {
    color: var(--brand-text-secondary);
}

.brand-footer-sub {
    color: var(--brand-text-muted) !important;
    margin-top: 0.25rem;
}

.brand-footer-certs {
    padding-top: 0.5rem;
}

.brand-footer-certs img {
    height: 23px;
    margin: 0.5rem 0.625rem;
}

/* 리포트 전용 */
.brand-report-card {
    background: var(--brand-bg-card);
    border: 1px solid var(--brand-border);
    border-radius: 1rem;
    padding: 2rem;
}

/* 반응형 */
@media (max-width: 768px) {
    .brand-hero {
        padding: 3rem 0 2rem;
    }
    .brand-hero-title {
        font-size: 2rem;
    }
    .brand-hero-subtitle {
        font-size: 1rem;
    }
    .brand-score-circle {
        width: 160px;
        height: 160px;
    }
    .brand-score-circle .score-value {
        font-size: 2.25rem;
    }
}