/* ========================================
   CKT - Causal Knowledge Trace
   Main Stylesheet
   ======================================== */

/* CSS Variables */
:root {
    --primary-color: #3c8dbc;
    --secondary-color: #6c757d;
    --success-color: #4caf50;
    --danger-color: #dc3545;
    --warning-color: #ff9800;
    --info-color: #2196F3;
    
    /* Background colors */
    --bg-info-light: #d9edf7;
    --bg-info-lighter: #e8f4f8;
    --bg-warning-light: #fcf8e3;
    --bg-warning-lighter: #fff3e0;
    --bg-success-light: #d4edda;
    --bg-danger-light: #f8d7da;
    --bg-gray-light: #f5f5f5;
    --bg-blue-light: #e3f2fd;
    --bg-purple-light: #f3e5f5;
    --bg-green-light: #e8f5e9;
    
    /* Text colors */
    --text-info: #31708f;
    --text-warning: #8a6d3b;
    --text-success: #3c763d;
    --text-danger: #a94442;
    --text-dark: #333;
    --text-blue: #1976d2;
    --text-orange: #f57c00;
    --text-purple: #7b1fa2;
    --text-green: #388e3c;
    
    /* Border colors */
    --border-info: #31708f;
    --border-info-light: #5bc0de;
    --border-warning: #f0ad4e;
    --border-success: #5cb85c;
    --border-gray: #999;
    --border-blue: #3c8dbc;
    --border-orange: #ff9800;
    --border-blue-material: #2196F3;
    --border-purple: #9c27b0;
    --border-green: #4caf50;
}

/* ========================================
   Base Styles
   ======================================== */

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f6f9;
}

/* ========================================
   Navigation Styles
   ======================================== */

.navbar-custom {
    background-color: var(--primary-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-custom .container-fluid {
    flex-direction: column;
    padding: 0;
}

.navbar-brand-row {
    width: 100%;
    text-align: center;
    padding: 1rem 0 0.5rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

.navbar-brand-title {
    color: white;
    font-weight: bold;
    font-size: 1.5rem;
    text-decoration: none;
    display: inline-block;
}

.navbar-brand-title:hover {
    color: rgba(255,255,255,0.9);
}

.navbar-nav-row {
    width: 100%;
    display: flex;
    justify-content: center;
    padding: 0.5rem 0;
}

.navbar-custom .navbar-toggler {
    border-color: rgba(255,255,255,0.5);
    margin: 0.5rem auto;
}

.navbar-custom .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 255, 255, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.navbar-custom .nav-link {
    color: rgba(255,255,255,0.9);
    margin: 0 0.5rem;
    transition: all 0.3s;
}

.navbar-custom .nav-link:hover,
.navbar-custom .nav-link.active {
    color: white;
    background-color: rgba(255,255,255,0.1);
    border-radius: 4px;
}

@media (max-width: 991px) {
    .navbar-nav-row {
        flex-direction: column;
    }

    .navbar-custom .navbar-collapse {
        text-align: center;
    }
}

/* ========================================
   Content Wrapper
   ======================================== */

.content-wrapper {
    padding: 2rem 0;
    min-height: calc(100vh - 120px);
}

/* ========================================
   Card Styles
   ======================================== */

.card {
    border: none;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12);
    margin-bottom: 1.5rem;
}

.card-header {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
    border-bottom: none;
}

.card-header-primary {
    background-color: var(--primary-color);
    color: white;
}

/* ========================================
   Button Styles
   ======================================== */

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

.btn-primary:hover {
    background-color: #367fa9;
    border-color: #367fa9;
}

/* ========================================
   Footer Styles
   ======================================== */

footer {
    background-color: #222;
    color: #ccc;
    padding: 1.5rem 0;
    margin-top: 3rem;
}

.footer-logo {
    height: 50px;
}

/* ========================================
   About Page - Information Boxes
   ======================================== */

.info-box {
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 5px;
}

.info-box h4,
.info-box h5 {
    margin-top: 0;
}

.info-box ul,
.info-box p:last-child {
    margin-bottom: 0;
}

/* What is CKT Section */
.info-box-what-is-ckt {
    background-color: var(--bg-info-light);
    border-left: 4px solid var(--border-info);
}

.info-box-what-is-ckt h4,
.info-box-what-is-ckt p {
    color: var(--text-info);
}

/* Key Features Section */
.info-box-key-features {
    background-color: var(--bg-info-lighter);
    border-left: 4px solid var(--border-info-light);
}

.info-box-key-features h4,
.info-box-key-features ul {
    color: var(--text-info);
}

/* Resources Section */
.info-box-resources {
    background-color: var(--bg-gray-light);
    border-left: 4px solid var(--border-gray);
}

.info-box-resources h4,
.info-box-resources ul {
    color: var(--text-dark);
}

/* ========================================
   About Page - Step Sections
   ======================================== */

/* Step 1 - Graph Configuration */
.step-box-1 {
    background-color: var(--bg-warning-light);
    border-left: 4px solid var(--border-warning);
}

.step-box-1 h5 {
    color: var(--text-warning);
    margin-top: 0;
}

.step-tip {
    background-color: #fff3cd;
    padding: 15px;
    border-radius: 4px;
    border: 1px solid #ffeaa7;
}

/* Step 2 - Data Upload */
.step-box-2 {
    background-color: var(--bg-info-light);
    border-left: 4px solid var(--border-blue);
}

.step-box-2 h5 {
    color: var(--text-info);
    margin-top: 0;
}

/* Step 3 - Graph Visualization */
.step-box-3 {
    background-color: var(--bg-success-light);
    border-left: 4px solid var(--border-success);
}

.step-box-3 h5 {
    color: var(--text-success);
    margin-top: 0;
}

/* Step 4 - Causal Analysis */
.step-box-4 {
    background-color: var(--bg-warning-lighter);
    border-left: 4px solid var(--border-orange);
}

.step-box-4 h5 {
    color: var(--text-warning);
    margin-top: 0;
}

/* ========================================
   About Page - Concept Boxes
   ======================================== */

/* Adjustment Sets */
.concept-box-adjustment {
    background-color: var(--bg-blue-light);
    border-left: 4px solid var(--border-blue-material);
}

.concept-box-adjustment h5 {
    color: var(--text-blue);
    margin-top: 0;
}

/* Instrumental Variables */
.concept-box-instrumental {
    background-color: var(--bg-warning-lighter);
    border-left: 4px solid var(--border-orange);
}

.concept-box-instrumental h5 {
    color: var(--text-orange);
    margin-top: 0;
}

/* Causal Paths */
.concept-box-paths {
    background-color: var(--bg-purple-light);
    border-left: 4px solid var(--border-purple);
}

.concept-box-paths h5 {
    color: var(--text-purple);
    margin-top: 0;
}

/* Causal Graph */
.concept-box-graph {
    background-color: var(--bg-green-light);
    border-left: 4px solid var(--border-green);
}

.concept-box-graph h5 {
    color: var(--text-green);
    margin-top: 0;
}

/* ========================================
   Home Page - Specific Styles
   ======================================== */

/* Home page uses similar boxes but with slight variations */
.home-info-box {
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 5px;
}

.home-info-box h4,
.home-info-box h5 {
    margin-top: 0;
}

.home-info-box ul,
.home-info-box p:last-child {
    margin-bottom: 0;
}

/* Home - What is CKT */
.home-what-is-ckt {
    background-color: var(--bg-info-light);
}

.home-what-is-ckt h4,
.home-what-is-ckt p {
    color: var(--text-info);
}

/* Home - Key Features */
.home-key-features {
    background-color: var(--bg-warning-light);
}

.home-key-features h4,
.home-key-features ul {
    color: var(--text-warning);
}

/* Home - Resources */
.home-resources {
    background-color: var(--bg-gray-light);
}

.home-resources h4,
.home-resources ul {
    color: var(--text-dark);
}

/* Home - Step boxes */
.home-step-1 {
    background-color: var(--bg-warning-light);
}

.home-step-1 h4,
.home-step-1 p,
.home-step-1 ol {
    color: var(--text-warning);
}

.home-step-2 {
    background-color: var(--bg-info-light);
}

.home-step-2 h4,
.home-step-2 p,
.home-step-2 ol {
    color: var(--text-info);
}

.home-step-3 {
    background-color: var(--bg-warning-light);
}

.home-step-3 h4,
.home-step-3 p,
.home-step-3 ol {
    color: var(--text-warning);
}

.home-step-4 {
    background-color: var(--bg-info-light);
}

.home-step-4 h4,
.home-step-4 p,
.home-step-4 ol {
    color: var(--text-info);
}

/* Home - Concept boxes */
.home-concept-adjustment {
    background-color: var(--bg-info-light);
}

.home-concept-adjustment h5,
.home-concept-adjustment p {
    color: var(--text-info);
}

.home-concept-instrumental {
    background-color: var(--bg-warning-light);
}

.home-concept-instrumental h5,
.home-concept-instrumental p {
    color: var(--text-warning);
}

.home-concept-paths {
    background-color: var(--bg-info-light);
}

.home-concept-paths h5,
.home-concept-paths p {
    color: var(--text-info);
}

.home-concept-links {
    background-color: var(--bg-warning-light);
}

.home-concept-links h5,
.home-concept-links p {
    color: var(--text-warning);
}

/* ========================================
   Node Color Indicators
   ======================================== */

.node-color-red {
    color: #d9534f;
}

.node-color-cyan {
    color: #4ECDC4;
}

.node-color-gray {
    color: #999;
}

/* Badge for cyan color (custom) */
.badge-cyan {
    background-color: #4ECDC4;
    color: white;
}

/* ========================================
   Utility Classes
   ======================================== */

.section-heading {
    color: var(--text-dark);
}

.text-muted-custom {
    color: #6c757d;
}

/* ========================================
   Top Notification Banner
   ======================================== */

div#ckt-top-notification {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 99999 !important;
    transform: translateY(-100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    margin: 0 !important;
    padding: 0 !important;
}

div#ckt-top-notification.show {
    transform: translateY(0);
    pointer-events: auto;
}

div#ckt-top-notification .ckt-notif-bar {
    display: flex !important;
    align-items: center !important;
    gap: 16px !important;
    padding: 16px 28px !important;
    margin: 0 !important;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif !important;
    font-size: 1rem !important;
    font-weight: 500 !important;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25) !important;
    border: none !important;
    border-radius: 0 !important;
    min-height: 60px !important;
}

div#ckt-top-notification .ckt-notif-bar.ckt-notif-success {
    background: linear-gradient(135deg, #28a745 0%, #1e7e34 100%) !important;
    color: #fff !important;
}

div#ckt-top-notification .ckt-notif-bar.ckt-notif-error {
    background: linear-gradient(135deg, #dc3545 0%, #b21f2d 100%) !important;
    color: #fff !important;
}

div#ckt-top-notification .ckt-notif-bar.ckt-notif-info {
    background: linear-gradient(135deg, #17a2b8 0%, #117a8b 100%) !important;
    color: #fff !important;
}

div#ckt-top-notification .ckt-notif-icon {
    font-size: 1.6rem !important;
    flex-shrink: 0 !important;
    color: #fff !important;
    width: 30px !important;
    text-align: center !important;
}

div#ckt-top-notification .ckt-notif-text {
    flex: 1 1 auto !important;
    text-align: center !important;
    color: #fff !important;
    line-height: 1.4 !important;
}

div#ckt-top-notification .ckt-notif-title {
    display: block !important;
    font-size: 1.1rem !important;
    font-weight: 700 !important;
    color: #fff !important;
    margin: 0 0 2px 0 !important;
}

div#ckt-top-notification .ckt-notif-body {
    display: block !important;
    font-size: 0.88rem !important;
    font-weight: 400 !important;
    color: rgba(255, 255, 255, 0.9) !important;
    margin: 0 !important;
}

div#ckt-top-notification .ckt-notif-action {
    display: inline-block !important;
    background: rgba(255, 255, 255, 0.2) !important;
    border: 2px solid rgba(255, 255, 255, 0.5) !important;
    color: #fff !important;
    padding: 8px 20px !important;
    border-radius: 5px !important;
    font-size: 0.875rem !important;
    font-weight: 700 !important;
    cursor: pointer !important;
    text-decoration: none !important;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
    transition: background 0.2s !important;
}

div#ckt-top-notification .ckt-notif-action:hover {
    background: rgba(255, 255, 255, 0.35) !important;
    color: #fff !important;
    text-decoration: none !important;
}

div#ckt-top-notification .ckt-notif-close {
    background: transparent !important;
    border: none !important;
    outline: none !important;
    color: #fff !important;
    font-size: 1.5rem !important;
    cursor: pointer !important;
    opacity: 0.75 !important;
    padding: 0 4px !important;
    line-height: 1 !important;
    flex-shrink: 0 !important;
    box-shadow: none !important;
}

div#ckt-top-notification .ckt-notif-close:hover {
    opacity: 1 !important;
}