/* ============================================
   Features 페이지 스타일
   ============================================ */

html, body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    overflow-y: auto;
    height: auto;
    min-height: 100%;
}

body:not(.dark-mode) {
    background: #ffffff !important;
}

.security-container {
    max-width: 1200px !important;
    width: 1200px !important;
    margin: 0 auto;
    padding: 48px 20px 80px;
    box-sizing: border-box;
}

.page-title {
    font-size: 42px;
    font-weight: 800;
    color: #1a1a2e;
    margin-bottom: 16px;
    text-align: center;
    letter-spacing: -0.5px;
}

.page-subtitle {
    font-size: 18px;
    color: #666;
    margin-bottom: 32px;
    text-align: center;
    line-height: 1.6;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 보안 섹션 */
.security-section {
    background: #ffffff;
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 20px;
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.security-section-title {
    font-size: 20px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.security-section-title i {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: white;
}

.security-section-title i.purple { background: linear-gradient(135deg, #1E3A8A, #172d6f); }
.security-section-title i.blue { background: linear-gradient(135deg, #6366F1, #4F46E5); }
.security-section-title i.green { background: linear-gradient(135deg, #14B8A6, #34D399); }
.security-section-title i.orange { background: linear-gradient(135deg, #F59E0B, #FBBF24); }
.security-section-title i.red { background: linear-gradient(135deg, #EF4444, #F87171); }

/* 보안 아이템 */
.security-item {
    border-bottom: 1px solid #f0f0f0;
    margin-bottom: 0;
}

.security-item:last-child {
    border-bottom: none;
}

.security-question {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.2s ease;
    border-radius: 8px;
}

.security-question:hover {
    background: #f8f9fa;
}

.security-question-text {
    font-size: 16px;
    font-weight: 500;
    color: #1a1a2e;
    flex: 1;
}

.security-question-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 16px;
}

.security-item.active .security-question-icon {
    transform: rotate(180deg);
}

.security-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 20px;
}

.security-item.active .security-answer {
    max-height: 1000px;
    padding: 0 20px 20px;
}

.security-answer-content {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
    padding-top: 10px;
}

.security-answer-content ul {
    margin: 12px 0;
    padding-left: 24px;
}

.security-answer-content li {
    margin-bottom: 8px;
}

.security-answer-content strong {
    color: #1a1a2e;
    font-weight: 600;
}

/* 하이라이트 박스 */
.highlight-box {
    background: #f8f9fa;
    border-left: 4px solid #1E3A8A;
    padding: 16px 20px;
    margin: 20px 0;
    border-radius: 4px;
}

.highlight-box.warning {
    border-left-color: #F59E0B;
    background: #fffbf0;
}

.highlight-box.success {
    border-left-color: #14B8A6;
    background: #f0fdfa;
}

.highlight-box-title {
    font-size: 15px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.highlight-box-content {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 32px;
    color: #94a3b8;
}

.empty-title {
    font-size: 20px;
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 8px;
}

.empty-desc {
    font-size: 14px;
    color: #666;
}

/* 다크모드 스타일 */
body.dark-mode {
    background: #202020 !important;
}

body.dark-mode .security-container {
    color: #f1f5f9;
}

body.dark-mode .page-title {
    color: #f1f5f9;
}

body.dark-mode .page-subtitle {
    color: #94a3b8;
}

body.dark-mode .security-section {
    background: #2a2a2a;
    border-color: rgba(148, 163, 184, 0.1);
}

body.dark-mode .security-section-title {
    color: #f1f5f9;
}

body.dark-mode .security-item {
    border-bottom-color: rgba(148, 163, 184, 0.1);
}

body.dark-mode .security-question {
    color: #f1f5f9;
}

body.dark-mode .security-question:hover {
    background: rgba(6, 182, 212, 0.1);
}

body.dark-mode .security-question-text {
    color: #f1f5f9;
}

body.dark-mode .security-answer-content {
    color: #94a3b8;
}

body.dark-mode .security-answer-content strong {
    color: #f1f5f9;
}

body.dark-mode .highlight-box {
    background: #202020;
    border-left-color: #1E3A8A;
}

body.dark-mode .highlight-box.warning {
    border-left-color: #F59E0B;
    background: rgba(245, 158, 11, 0.1);
}

body.dark-mode .highlight-box.success {
    border-left-color: #14B8A6;
    background: rgba(20, 184, 166, 0.1);
}

body.dark-mode .highlight-box-title {
    color: #f1f5f9;
}

body.dark-mode .highlight-box-content {
    color: #94a3b8;
}

body.dark-mode .empty-icon {
    background: rgba(148, 163, 184, 0.1);
    color: #94a3b8;
}

body.dark-mode .empty-title {
    color: #f1f5f9;
}

body.dark-mode .empty-desc {
    color: #94a3b8;
}

@media (max-width: 768px) {
    .security-container {
        max-width: 100% !important;
        width: 100% !important;
        margin: 0 auto;
        padding: 20px 20px 80px;
        box-sizing: border-box;
    }

    .page-title {
        font-size: 28px;
    }

    .page-subtitle {
        font-size: 16px;
        margin-bottom: 40px;
        display: none;
    }

    .security-section {
        padding: 20px;
    }

    .security-question {
        padding: 16px;
    }

    .security-question-text {
        font-size: 15px;
    }
}