/*
    Landing Page Styles

    This file contains all styling for the landing/welcome page including:
    - Hero section styles
    - Learn button styles
    - Welcome content tabs
    - Animations and transitions

    Uses global CSS variables from:
    - color.css (colors)
    - main_layout.css (global spacing, border-radius, transitions)

    Landing-specific design tokens are defined below
*/

:root {
    /* Landing-specific spacing tokens */
    --landing-spacing-xxs: 4px;
    --landing-spacing-xs: 8px;
    --landing-spacing-s-6: 6px;
    --landing-spacing-s-10: 10px;
    --landing-spacing-s-12: 12px;
    --landing-spacing-sm: 16px;
    --landing-spacing-md: 20px;
    --landing-spacing-lg: 24px;
    --landing-spacing-xl: 40px;
    /* Landing-specific typography tokens */
    --landing-font-sm: 16px;
    --landing-font-md: 20px;
    --landing-font-lg: 24px;
    /* Landing-specific radius tokens */
    --landing-radius-xs: 8px;
    --landing-radius-md: 20px;
}


/* Main Landing Page Container */

.landing-page {
    background: var(--bg-primary);
    min-height: calc(100vh - 60px - 56px - 2rem);
    padding: 0;
    margin: -1rem;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
}


/* Hero Section */

.landing-hero {
    text-align: center;
    padding: 60px var(--spacing-lg) var(--landing-spacing-xl) var(--spacing-lg);
    color: var(--color-white);
}

.landing-logo-section {
    margin-bottom: var(--landing-spacing-xl);
}

.landing-logo {
    width: 250px;
    height: auto;
    margin-bottom: var(--spacing-lg);
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.landing-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    margin-top: 0;
}

.landing-subtitle {
    font-size: var(--landing-font-sm);
    color: var(--color-text-muted);
    line-height: 1.5;
    max-width: 600px;
    margin: 0 auto var(--landing-spacing-xl) auto;
}


/* Learn Button Section */

.landing-cta-section {
    margin-top: var(--spacing-lg);
}

.landing-cta-text {
    font-size: var(--landing-font-sm);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-secondary);
    margin-top: 0;
}

.landing-learn-button {
    background-color: var(--button-light-bg);
    color: var(--color-black);
    padding: var(--landing-spacing-s-12) var(--landing-spacing-lg);
    border-radius: var(--border-radius-xl);
    font-weight: 500;
    border: 1px solid var(--border-color-light);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--landing-spacing-xs);
}

.landing-learn-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color-lg);
    color: var(--color-black);
}

.landing-learn-button:active {
    transform: translateY(0);
}

.landing-learn-button:focus {
    color: var(--color-black);
    outline: 2px solid var(--border-color-light);
    outline-offset: 2px;
}

.landing-button-icon {
    margin-left: var(--landing-spacing-xs);
    transition: transform 0.3s ease;
    font-size: 14px;
}

.landing-button-icon--rotated {
    transform: rotate(180deg);
}


/* Welcome Content Section */

.landing-welcome-content {
    background: var(--bg-primary);
    padding: var(--landing-spacing-xl) var(--spacing-lg);
    display: none;
    border-top: 1px solid var(--border-color-ui);
    margin-top: var(--spacing-lg);
    opacity: 0;
    transform: translateY(-20px);
    transition: var(--transition);
}

.landing-welcome-content--visible {
    display: block;
    opacity: 1;
    transform: translateY(0);
    animation: slideDown 0.4s ease-out;
}

.landing-welcome-title {
    color: var(--color-white);
    font-size: var(--landing-font-lg);
    font-weight: 600;
    margin-bottom: 30px;
    text-align: center;
    margin-top: 0;
}


/* Welcome Tabs Styling */

.landing-tabs {
    margin-bottom: var(--spacing-lg);
}


/* DBC Card Container for Tabs - Clean Design */

.landing-page .card-container {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 6px var(--shadow-color-sm);
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
}


/* DBC Tabs Header */

.landing-page .tabs-header {
    background: var(--color-topbar-bg);
    border: none;
    border-bottom: 1px solid var(--baby-blue-500);
    padding: 0px var(--spacing-lg);
    margin: 0;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}


/* Override DBC Tab Styles with Proper Specificity */

.landing-page .tabs-header .nav-tabs {
    border-bottom: none;
    gap: 6px;
    margin: 0;
    padding: 0;
}

.landing-page .tabs-header .nav-tabs .nav-item {
    margin: 0;
}

.landing-page .tabs-header .nav-tabs .nav-link {
    box-sizing: border-box;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    padding: var(--landing-spacing-xs) var(--landing-spacing-md);
    gap: 4px;
    height: 45px;
    background: var(--baby-blue-700);
    border-width: 1px 1px 0px 1px;
    border-style: solid;
    border-color: var(--baby-blue-500);
    border-radius: var(--landing-radius-xs) var(--landing-radius-xs) 0px 0px;
    font-family: 'Inter', sans-serif;
    font-style: normal;
    font-weight: 600;
    font-size: 18px;
    line-height: 180%;
    text-align: center;
    color: var(--color-white);
    transition: all 0.3s ease;
    cursor: pointer;
    margin: 0;
    white-space: nowrap;
}


/* Updated tab hover color to baby-blue-300 for better UX */

.landing-page .tabs-header .nav-tabs .nav-link:hover {
    background: var(--baby-blue-300);
    color: var(--color-white);
    border-color: var(--baby-blue-500);
}

.landing-page .tabs-header .nav-tabs .nav-link.active {
    background: var(--baby-blue-500);
    color: var(--color-white);
    border-color: var(--baby-blue-500);
}


/* Specific tab widths for DBC tabs */

.landing-page .tabs-header .nav-tabs .nav-item:nth-child(1) .nav-link {
    width: 260px;
}

.landing-page .tabs-header .nav-tabs .nav-item:nth-child(2) .nav-link {
    width: 160px;
}

.landing-page .tabs-header .nav-tabs .nav-item:nth-child(3) .nav-link {
    width: 180px;
}

.landing-page .tabs-header .nav-tabs .nav-item:nth-child(4) .nav-link {
    width: 140px;
}


/* Dark Theme Content Styling */

.landing-page .content-container {
    background: var(--color-topbar-bg);
    color: var(--color-white);
    padding: var(--spacing-lg);
}

.landing-page .summary-section {
    margin-bottom: var(--spacing-xl);
}

.landing-page .main-title h1 {
    color: var(--color-primary);
    font-size: var(--landing-font-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.landing-page .body-text p {
    color: var(--color-text-secondary);
    font-size: var(--landing-font-sm);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

.landing-page .section-bordered {
    border: none;
    background-color: var(--color-topbar-bg);
    border-radius: var(--landing-radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.landing-page .feature-section {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    gap: var(--spacing-lg);
}

.landing-page .feature-title {
    flex: 0 0 300px;
}

.landing-page .section-title h3 {
    color: var(--color-secondary);
    font-size: var(--landing-font-md);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.landing-page .feature-body p {
    color: var(--color-text-secondary);
    font-size: var(--landing-font-sm);
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.landing-page .image-container {
    flex: 1;
    text-align: center;
}

.landing-page .feature-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border);
}

.landing-page .image-caption {
    color: var(--color-text-muted);
    font-size: 12px;
    margin-top: var(--spacing-xs);
    font-style: italic;
}


/* Side Navigation in Card */

.landing-page .tab-content-container {
    background: var(--color-topbar-bg);
    padding: var(--spacing-lg);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
}

.landing-page .side-nav {
    display: none;
    /* Hide side nav for cleaner look */
}

.landing-page .tab-content-main {
    width: 100%;
}


/* Responsive Design for Dark Theme Tabs */

@media (max-width: 768px) {
    .landing-page .tabs-header {
        padding: 0px var(--spacing-sm);
    }
    .landing-page .tabs-header .nav-tabs .nav-item:nth-child(1) .nav-link,
    .landing-page .tabs-header .nav-tabs .nav-item:nth-child(2) .nav-link,
    .landing-page .tabs-header .nav-tabs .nav-item:nth-child(3) .nav-link,
    .landing-page .tabs-header .nav-tabs .nav-item:nth-child(4) .nav-link,
    .landing-page .tabs-header .nav-tabs .nav-item:nth-child(5) .nav-link {
        width: auto;
        font-size: 14px;
        padding: var(--landing-spacing-s-6) var(--landing-spacing-s-12);
        min-width: 120px;
    }
    .landing-page .feature-section {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    .landing-page .feature-title {
        flex: none;
        width: 100%;
    }
    .landing-page .content-container {
        padding: var(--spacing-md);
    }
    .landing-page .tab-content-container {
        padding: var(--spacing-md);
    }
}

.landing-page .landing-tab {
    color: var(--color-text-secondary);
    background-color: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
    padding: var(--landing-spacing-s-12) var(--spacing-md);
}

.landing-page .landing-tab:hover {
    color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.05);
}

.landing-page .landing-tab--selected {
    color: var(--color-white);
    background-color: var(--color-border);
    border-bottom: 2px solid var(--color-primary);
}

.landing-page .landing-tab-content {
    background-color: var(--bg-primary);
    color: var(--color-white);
    border: none;
    padding: var(--spacing-lg);
    border-radius: var(--landing-radius-xs);
}


/* Animations */

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
        max-height: 0;
    }
    to {
        opacity: 1;
        transform: translateY(0);
        max-height: 1000px;
    }
}

@keyframes slideUp {
    from {
        opacity: 1;
        transform: translateY(0);
        max-height: 1000px;
    }
    to {
        opacity: 0;
        transform: translateY(-30px);
        max-height: 0;
    }
}

.landing-welcome-content--entering {
    animation: slideDown 0.4s ease-out;
}

.landing-welcome-content--exiting {
    animation: slideUp 0.3s ease-in;
}


/* Responsive Design */

@media (max-width: 768px) {
    .landing-hero {
        padding: var(--landing-spacing-xl) var(--spacing-md) var(--landing-spacing-lg) var(--spacing-md);
    }
    .landing-title {
        font-size: 28px;
    }
    .landing-subtitle {
        font-size: 14px;
        max-width: 90%;
    }
    .landing-logo {
        width: 100px;
    }
    .landing-learn-button {
        padding: var(--landing-spacing-s-10) var(--spacing-lg);
        font-size: 14px;
    }
    .landing-welcome-content {
        padding: var(--landing-spacing-lg) var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .landing-hero {
        padding: var(--landing-spacing-lg) var(--landing-spacing-xs) var(--spacing-lg) var(--landing-spacing-xs);
    }
    .landing-title {
        font-size: var(--landing-font-lg);
        line-height: 1.3;
    }
    .landing-subtitle {
        font-size: 13px;
        max-width: 95%;
    }
    .landing-logo {
        width: 80px;
        margin-bottom: var(--spacing-md);
    }
    .landing-welcome-title {
        font-size: var(--landing-font-lg);
    }
    .landing-page .landing-tab {
        font-size: 12px;
        padding: var(--landing-spacing-xxs) var(--landing-spacing-s-10);
    }
}


/* Accessibility */

@media (prefers-reduced-motion: reduce) {
    .landing-learn-button,
    .landing-button-icon,
    .landing-welcome-content,
    .landing-tab {
        transition: none;
    }
    .landing-welcome-content--entering,
    .landing-welcome-content--exiting {
        animation: none;
    }
    @keyframes slideDown {
        from,
        to {
            opacity: 1;
            transform: none;
        }
    }
    @keyframes slideUp {
        from,
        to {
            opacity: 0;
            transform: none;
        }
    }
}


/* High contrast mode support */

@media (prefers-contrast: high) {
    .landing-learn-button {
        border: 2px solid var(--color-white);
    }
    .landing-welcome-content {
        border: 1px solid var(--color-text-secondary);
    }
}


/* Print styles */

@media print {
    .landing-page {
        background: white;
        color: black;
        min-height: auto;
        margin: 0;
    }
    .landing-hero {
        padding: var(--landing-spacing-md);
    }
    .landing-learn-button {
        display: none;
    }
    .landing-welcome-content {
        display: block;
        background: white;
        border: 1px solid black;
    }
}


/* Page navigation styles for How 8Knot Works */

.two-page-container {
    width: 100%;
}

.landing-page .sidebar-navigation {
    background: transparent;
    border: none;
    border-radius: var(--border-radius-md);
    box-shadow: none;
}

.landing-page .sidebar-navigation .card-body {
    background: transparent;
}

.landing-page .page-nav-btn {
    width: 100%;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: var(--landing-radius-md);
    /* Rounded like main tabs */
    transition: var(--transition);
    border: 1px solid var(--color-border);
    padding: var(--landing-spacing-s-10) var(--landing-spacing-sm);
}

.landing-page .page-nav-btn-active {
    background: var(--baby-blue-500);
    border-color: var(--baby-blue-500);
    color: var(--color-white);
}

.landing-page .page-nav-btn-inactive {
    background: var(--color-border);
    border-color: var(--color-border);
    color: var(--color-text-secondary);
}

.landing-page .page-nav-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 6px var(--shadow-color-sm);
}

.landing-page .page-nav-btn-inactive:hover {
    background: var(--hover-bg);
    color: var(--color-white);
}

.page-content {
    width: 100%;
    padding-left: 0;
}


/* Mobile responsive for sidebar */

@media (max-width: 991px) {
    .landing-page .sidebar-navigation {
        margin-bottom: var(--spacing-md);
    }
    .landing-page .sidebar-navigation .card-body {
        padding: var(--spacing-sm);
    }
    .landing-page .page-nav-btn {
        font-size: 0.85rem;
        padding: var(--landing-spacing-xs) var(--landing-spacing-s-12);
    }
}

.image-container-center {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xl);
}

.main-feature-image {
    max-width: 70%;
    /* Reduced by 30% from 100% */
    height: auto;
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 8px var(--shadow-color-sm);
}


/* DBC-based page items and features */

.landing-page .page-item {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.landing-page .page-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color-md);
}

.landing-page .page-item .section-title,
.landing-page .feature-title,
.landing-page .step-title {
    color: var(--color-white);
    font-size: var(--landing-font-md);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.landing-page .page-item .section-description,
.landing-page .feature-description,
.landing-page .step-description {
    color: var(--color-text-secondary);
    font-size: var(--landing-font-sm);
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: 0;
}

.landing-page .feature-image {
    max-width: 95%;
    /* Even larger size for better visibility */
    height: auto;
    border-radius: var(--landing-radius-xs);
    margin: var(--spacing-sm) 0;
}

.landing-page .image-caption {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    text-align: center;
    margin-top: var(--spacing-xs);
}


/* Bootstrap-based layout improvements */

.landing-page .content-container .card {
    background: transparent;
    border: none;
    color: var(--color-white);
}

.landing-page .content-container .card-body {
    background: transparent;
}

.landing-page .main-title {
    color: var(--color-white);
    font-size: 32px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.landing-page .body-text {
    color: var(--color-text-secondary);
    font-size: var(--landing-font-sm);
    font-weight: 400;
    line-height: 1.6;
}


/* Feature sections for vertical layout */

.landing-page .feature-section {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-lg);
}

.landing-page .feature-title {
    margin-bottom: var(--spacing-md);
}

.landing-page .about-body,
.landing-page .feature-body {
    color: var(--color-text-secondary);
    font-size: var(--landing-font-sm);
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.landing-page .image-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: var(--spacing-sm);
}


/* Responsive design for welcome sections */

@media (max-width: 768px) {
    .landing-page .feature-section {
        flex-direction: column;
        gap: var(--landing-spacing-md);
    }
}


/* Before/After Image Containers */

.landing-page .before-after-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: var(--landing-spacing-md) 0;
    gap: var(--landing-spacing-md);
    flex-wrap: nowrap;
}

.landing-page .before-image-container,
.landing-page .after-image-container {
    flex: 1;
    text-align: center;
    max-width: 45%;
}

.landing-page .image-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 var(--landing-spacing-md);
    min-width: 60px;
    flex-shrink: 0;
    align-self: center;
}


/* Changed arrow to solid white using CSS filter */

.landing-page .arrow-image {
    width: 80px;
    height: auto;
    opacity: 1;
    filter: brightness(0) invert(1);
}


/* Large caption text for before/after images */

.landing-page .before-image-container .image-caption,
.landing-page .after-image-container .image-caption {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
    font-weight: 500;
    line-height: 1.4;
}


/* Responsive design for before/after images */

@media (max-width: 992px) {
    .landing-page .before-after-container {
        flex-direction: column;
        align-items: center;
        gap: var(--landing-spacing-lg);
    }
    .landing-page .before-image-container,
    .landing-page .after-image-container {
        max-width: 80%;
    }
    .landing-page .image-arrow {
        padding: var(--landing-spacing-s-10) 0;
        min-width: auto;
    }
    /* Mobile arrow also solid white */
    .landing-page .arrow-image {
        transform: rotate(90deg);
        width: 60px;
        filter: brightness(0) invert(1);
    }
    .landing-page .before-image-container .image-caption,
    .landing-page .after-image-container .image-caption {
        font-size: 0.8rem;
    }
}