:root {
    --primary-color: #1a73e8;
    --primary-hover: #1557b0;
    --text-main: #1f2937;
    --text-muted: #5f6368;
    --bg-light: #f8f9fa;
    --border-color: #e8eaed;
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-stack);
    color: var(--text-main);
    background-color: var(--bg-light);
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Header Section */
.header {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    height: 64px;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* --- New Logo Image Constraints --- */
.logo {
    display: flex;
    align-items: center;
    gap: 8px; /* Space between image and text */
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.2rem;
}

.logo-img {
    height: 30px;
    width: auto;
    display: block;
    object-fit: contain;
}

.divider {
    color: var(--border-color);
    font-weight: 300;
}

.sub-title {
    font-weight: 600;
    color: var(--text-main);
}

.search-container {
    position: relative;
    width: 320px;
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    user-select: none;
}

.search-container input {
    width: 100%;
    padding: 10px 14px 10px 40px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.9rem;
    background-color: var(--bg-light);
    outline: none;
    transition: all 0.2s;
}

.search-container input:focus {
    background-color: #ffffff;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.2);
}

/* Layout Split Wrapper */
.main-container {
    display: flex;
    margin-top: 64px;
    height: calc(100vh - 64px);
}

/* Navigation Drawer Sidebar */
.sidebar {
    width: 260px;
    background-color: #ffffff;
    border-right: 1px solid var(--border-color);
    padding: 16px 0;
    overflow-y: auto;
}

.menu-group {
    margin-bottom: 16px;
}

.menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 24px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
    font-weight: bold;
}

.menu-header .arrow {
    color: var(--text-muted);
    font-size: 0.75rem;
    transition: transform 0.2s;
}

.menu-list {
    list-style: none;
    padding: 0 12px;
}

.menu-list.collapsed {
    display: none;
}

.menu-list li {
    padding: 10px 14px;
    font-size: 0.85rem;
    color: var(--text-muted);
    border-radius: 6px;
    cursor: pointer;
    margin-bottom: 2px;
    font-weight: 500;
}

.menu-list li:hover {
    background-color: var(--bg-light);
    color: var(--text-main);
}

.menu-list li.active {
    background-color: #e8f0fe;
    color: var(--primary-color);
    font-weight: 600;
}

/* Content Area Panel */
.content-area {
    flex: 1;
    padding: 32px 40px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.card {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
}

.card h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.section-divider {
    border: 0;
    height: 1px;
    background-color: var(--border-color);
    margin: 24px 0;
}

.card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.instruction-text {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 32px;
}

/* Grid Layout with Spaced Framing Controls */
.grid-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
    margin: 40px 0 48px 0;
    align-items: center;
}

/* Process Timeline/ Steps */
.steps-timeline {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.steps-timeline::before {
    content: '';
    position: absolute;
    left: 16px;
    top: 24px;
    bottom: 24px;
    width: 2px;
    border-left: 2px dashed #d1d5db;
    z-index: 1;
}

.step-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    position: relative;
    z-index: 2;
}

.step-number {
    width: 34px;
    height: 34px;
    background-color: var(--primary-color);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.85rem;
    font-weight: 600;
    flex-shrink: 0;
}

.step-text {
    font-size: 0.95rem;
    color: var(--text-main);
    line-height: 1.6;
    padding-top: 6px;
}

/* Base Registration Group Container Setup */
.registration-container {
    display: flex;
    flex-direction: column;
    padding: 0 !important;
    background: transparent !important;
}

/* Main Clickable Header Label Element */
.registration-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 15px;
    color: #4a5568;
    font-size: 1em;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s ease;
}

/* Hover and Active Pill Background Highlights (Matches Verification!) */
.registration-header:hover {
    background-color: #f7fafc;
}

.registration-header.active {
    background-color: #e8f0fe !important;
    color: #1a73e8 !important;
    font-weight: 500;
}

/* Nested Bullet Spacing Controls */
.registration-bullets {
    list-style-type: circle;
    margin: 0;
    padding-left: 42px;
}

.registration-bullets li {
    display: list-item !important; 
    padding: 4px 0 !important;
    font-size: 0.95em;
    color: #4a5568;
    cursor: pointer;
    background: none !important;
    border: none !important;
}

/* Sub-step Active Styles */
.registration-bullets li:hover,
.registration-bullets li.active {
    color: #1a73e8 !important;
    font-weight: 600;
    background: none !important;
}

/* Default Frame: Clean & Unified for 1 Image */
.screenshot-container {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    background-color: #ffffff;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    display: flex;
    width: 100%;
    height: auto; 
}

/* Big Horizontal Split: Maximize image visibility and width */
.screenshot-container.split-horizontal {
    flex-direction: column;
    height: auto;       
    gap: 24px;         
    padding: 0;        
    background-color: #ffffff; 
}

/* Individual Screenshot Rules */
.manual-screenshot {
    display: block;
    width: 100%;       
    height: auto;    
    background-color: #ffffff;
}

.split-horizontal .manual-screenshot:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
}

/* Callout Box Tip Panel */
.tip-box {
    background-color: #f0f4f9;
    border-radius: 10px;
    padding: 16px 20px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.tip-icon {
    font-size: 1.2rem;
    user-select: none;
    padding-top: 2px;
}

.tip-content strong {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.tip-content p {
    font-size: 0.85rem;
    color: #3c4043;
}

/* Footer Controls Pagination */
.pagination-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.btn {
    padding: 10px 18px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: #ffffff;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.2s;
}

.btn:hover {
    background-color: var(--bg-light);
}

.btn-next {
    background-color: var(--primary-color);
    color: #ffffff;
    border: none;
}

.btn-next:hover {
    background-color: var(--primary-hover);
}

.page-indicator {
    font-size: 0.9rem;
    color: var(--text-main);
    font-weight: 500;
}

/* Page Display Management Toggle states */
.page-content {
    display: none;
    width: 100%;
}

.page-content.active {
    display: block;
}

/* Responsive Layout Point */
@media (max-width: 992px) {
    .grid-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .steps-timeline {
        gap: 40px;
    }
    .screenshot-container {
        height: auto;
    }
}