:root {
    --bg-main: #0a0e17;
    --bg-card: rgba(18, 26, 43, 0.85);
    --bg-card-hover: rgba(24, 35, 58, 0.95);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(59, 130, 246, 0.3);
    
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --accent-blue: #3b82f6;
    --accent-indigo: #6366f1;
    --accent-teal: #14b8a6;
    --accent-green: #10b981;
    --accent-amber: #f59e0b;
    --accent-red: #ef4444;
    
    --font-family: -apple-system, BlinkMacSystemFont, "Pretendard", "Segoe UI", Roboto, sans-serif;
    --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-family);
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Background Ambient Glow */
.ambient-glow {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 400px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(99, 102, 241, 0.05) 50%, transparent 80%);
    filter: blur(80px);
    pointer-events: none;
    z-index: 0;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* Navbar */
.navbar {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 40px;
}

.brand {
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.brand-copy {
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.brand-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-indigo));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 18px;
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.brand-title {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.brand-badge {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-blue);
    border: 1px solid rgba(59, 130, 246, 0.3);
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 9999px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-link {
    white-space: nowrap;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    margin: 5px 0;
    border-radius: 2px;
    background: var(--text-primary);
}

.asset-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.asset-tabs button {
    flex: 1;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-card);
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
}

.asset-tabs button[aria-selected="true"] {
    border-color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.15);
    color: var(--text-primary);
}

[hidden] {
    display: none !important;
}

.result-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.result-empty {
    color: var(--text-secondary);
}

.case-item[aria-pressed="true"] {
    border-color: var(--accent-blue);
    background: rgba(59, 130, 246, 0.12);
}

button:focus-visible, .case-item:focus-visible, .nav-link:focus-visible {
    outline: 2px solid var(--accent-blue);
    outline-offset: 4px;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}

.btn-pin-status {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
    border: 1px solid rgba(16, 185, 129, 0.3);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 40px 0 60px 0;
}

.hero-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 9999px;
    font-size: 13px;
    color: var(--accent-blue);
    margin-bottom: 20px;
}

.hero-title {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -1px;
    margin-bottom: 16px;
}

.hero-title span {
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto 32px auto;
}

/* Grid Layout */
.main-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    gap: 32px;
    margin-bottom: 60px;
}

@media (max-width: 960px) {
    .brand-copy {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .main-grid {
        grid-template-columns: minmax(0, 1fr);
    }
}

/* Card */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px;
    backdrop-filter: blur(12px);
    transition: var(--transition-smooth);
}

.card:hover {
    border-color: var(--border-glow);
}

.card-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.card-subtitle {
    word-break: keep-all;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-input, .form-select {
    width: 100%;
    padding: 12px 14px;
    background: rgba(10, 14, 23, 0.7);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: var(--transition-smooth);
}

.form-input:focus, .form-select:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 10px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent-blue);
    cursor: pointer;
}

.btn-submit {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-indigo));
    border: none;
    border-radius: 10px;
    color: #ffffff;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.btn-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

/* Results Display */
.metric-highlight-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 24px;
}

@media (max-width: 600px) {
    .metric-highlight-grid {
        grid-template-columns: 1fr;
    }
}

.metric-box {
    background: rgba(10, 14, 23, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    text-align: center;
}

.metric-label {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 6px;
}

.metric-val {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-primary);
}

.metric-val.accent {
    color: #60a5fa;
}

.metric-val.green {
    color: #34d399;
}

.result-table {
    table-layout: fixed;
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 24px;
}

.result-table th, .result-table td {
    overflow-wrap: anywhere;
    padding: 12px 14px;
    font-size: 13px;
    border-bottom: 1px solid var(--border-color);
}

.result-table th {
    text-align: left;
    color: var(--text-muted);
    font-weight: 500;
}

.result-table td {
    text-align: right;
    font-weight: 600;
}

.result-table tr:last-child th, .result-table tr:last-child td {
    border-bottom: none;
}

/* Showcase list */
.case-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.case-item {
    gap: 12px;
    background: rgba(10, 14, 23, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.case-item:hover {
    border-color: var(--accent-blue);
    background: rgba(10, 14, 23, 0.8);
}

.case-info-title {
    font-size: 14px;
    font-weight: 700;
}

.case-info-meta {
    font-size: 12px;
    color: var(--text-muted);
}

.case-tag {
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 6px;
    font-weight: 600;
}

.tag-share {
    background: rgba(59, 130, 246, 0.2);
    color: #93c5fd;
}

.tag-blind {
    background: rgba(245, 158, 11, 0.2);
    color: #fcd34d;
}

.tag-redev {
    background: rgba(16, 185, 129, 0.2);
    color: #6ee7b7;
}

/* VIP Pin Modal Gate (Hard Lock) */
body.pin-locked {
    overflow: hidden !important;
    height: 100vh !important;
}

body.pin-locked > :not(#pin-gate-modal) {
    filter: blur(30px) grayscale(50%) !important;
    pointer-events: none !important;
    opacity: 0.08 !important;
    user-select: none !important;
}

.pin-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 40%, rgba(15, 23, 42, 0.98), rgba(5, 8, 16, 0.99));
    backdrop-filter: blur(35px);
    -webkit-backdrop-filter: blur(35px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999999;
    padding: 20px;
}

.pin-modal-overlay.hidden {
    display: none !important;
}

.pin-modal-card {
    background: #121a2b;
    border: 1px solid var(--accent-blue);
    border-radius: 20px;
    padding: 36px;
    max-width: 440px;
    width: 100%;
    text-align: center;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}

.pin-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(59, 130, 246, 0.2);
    color: var(--accent-blue);
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 16px;
}

.pin-title {
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.pin-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

.pin-input {
    width: 100%;
    padding: 14px;
    text-align: center;
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 6px;
    text-transform: uppercase;
    background: rgba(10, 14, 23, 0.8);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: #ffffff;
    outline: none;
    margin-bottom: 16px;
    transition: var(--transition-smooth);
}

.pin-input:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.25);
}

.pin-btn-submit {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-indigo));
    border: none;
    border-radius: 10px;
    color: #ffffff;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    margin-bottom: 16px;
}

.pin-kakao-link {
    display: block;
    font-size: 13px;
    color: #fcd34d;
    text-decoration: none;
    font-weight: 600;
    margin-top: 8px;
}

.pin-kakao-link:hover {
    text-decoration: underline;
}

.pin-error-msg {
    font-size: 13px;
    color: var(--accent-red);
    margin-bottom: 12px;
    display: none;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 32px 0;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

/* 메인·계산기와 동일한 모바일 전환 지점. 니치 페이지에만 적용한다. */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .navbar {
        padding: 16px 0;
        margin-bottom: 24px;
        gap: 12px;
    }

    .brand-title {
        font-size: 18px;
        white-space: nowrap;
    }

    .brand-badge {
        font-size: 10px;
    }

    .brand-copy .brand-badge {
        max-width: 100%;
        word-break: keep-all;
    }

    .nav-toggle {
        display: block;
        flex-shrink: 0;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        z-index: 10;
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
        padding: 20px 24px;
        background: rgba(7, 11, 20, 0.98);
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu.is-open {
        display: flex;
    }

    .hero {
        padding: 24px 0 36px;
    }

    .hero-title {
        font-size: 1.85rem;
        line-height: 1.3;
        letter-spacing: -0.5px;
        word-break: keep-all;
        overflow-wrap: anywhere;
    }

    .hero-desc {
        font-size: 0.92rem;
        line-height: 1.6;
        word-break: keep-all;
    }

    .hero-pill {
        font-size: 11px;
        padding: 6px 12px;
    }

    .card {
        padding: 20px 16px;
    }

    .form-row {
        grid-template-columns: minmax(0, 1fr);
    }

    .form-input, .form-select {
        font-size: 16px;
    }

    .result-table th, .result-table td {
        padding: 10px 6px;
        font-size: 12px;
    }

    .case-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .case-info-title, .case-info-meta {
        word-break: keep-all;
        overflow-wrap: anywhere;
    }
}