/* NotebookLM Use Cases E-Book Professional Stylesheet */

/* ==================== GLOBAL STYLES ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, rgb(245, 245, 250) 0%, rgb(235, 240, 248) 100%);
    color: rgb(30, 30, 30);
    line-height: 1.8;
    padding: 20px;
}

/* ==================== HEADER STYLES ==================== */
header {
    background: linear-gradient(135deg, rgb(30, 70, 120) 0%, rgb(40, 85, 140) 100%);
    color: white;
    padding: 40px 30px;
    text-align: center;
    border: 4px solid rgb(20, 50, 90);
    border-radius: 15px;
    box-shadow: 0 8px 20px rgba(30, 70, 120, 0.4);
    margin-bottom: 30px;
}

header h1 {
    font-size: 3em;
    font-weight: bold;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.4);
}

.subtitle {
    font-size: 1.4em;
    font-weight: bold;
    margin-bottom: 20px;
    color: rgb(220, 235, 250);
}

.print-btn {
    background: rgb(60, 140, 70);
    color: white;
    font-weight: bold;
    font-size: 1.1em;
    padding: 12px 30px;
    border: 3px solid rgb(45, 110, 55);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.print-btn:hover {
    background: rgb(45, 110, 55);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

/* ==================== NAVIGATION STYLES ==================== */
nav {
    background: rgb(250, 252, 255);
    border: 3px solid rgb(90, 140, 190);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(90, 140, 190, 0.2);
}

nav h2 {
    color: rgb(30, 70, 120);
    font-size: 1.8em;
    font-weight: bold;
    margin-bottom: 20px;
    border-bottom: 3px solid rgb(90, 140, 190);
    padding-bottom: 10px;
}

#nav-list {
    list-style: none;
}

#nav-list li {
    margin-bottom: 12px;
}

#nav-list button {
    width: 100%;
    text-align: left;
    background: linear-gradient(135deg, rgb(240, 248, 255) 0%, rgb(230, 242, 252) 100%);
    color: rgb(30, 70, 120);
    font-weight: bold;
    font-size: 1.05em;
    padding: 15px 20px;
    border: 3px solid rgb(90, 140, 190);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(90, 140, 190, 0.2);
}

#nav-list button:hover {
    background: linear-gradient(135deg, rgb(230, 242, 252) 0%, rgb(220, 235, 248) 100%);
    color: rgb(30, 70, 120);
    border-color: rgb(70, 120, 170);
    transform: translateX(10px);
    box-shadow: 0 4px 12px rgba(30, 70, 120, 0.3);
    border-width: 3px;
}

/* ==================== MAIN CONTENT STYLES ==================== */
main {
    max-width: 1200px;
    margin: 0 auto;
}

.content-section {
    background: rgb(255, 255, 255);
    border: 3px solid rgb(140, 170, 210);
    border-radius: 12px;
    padding: 35px;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(140, 170, 210, 0.2);
}

.content-section h2 {
    color: rgb(30, 70, 120);
    font-size: 2.2em;
    font-weight: bold;
    margin-bottom: 25px;
    border-bottom: 4px solid rgb(60, 140, 70);
    padding-bottom: 12px;
}

.content-section h3 {
    color: rgb(40, 85, 140);
    font-size: 1.6em;
    font-weight: bold;
    margin-top: 25px;
    margin-bottom: 15px;
}

.content-section h4 {
    color: rgb(50, 100, 150);
    font-size: 1.3em;
    font-weight: bold;
    margin-top: 20px;
    margin-bottom: 12px;
}

.content-section p {
    font-size: 1.08em;
    font-weight: 500;
    margin-bottom: 15px;
    text-align: justify;
    color: rgb(40, 40, 40);
}

.content-section strong {
    font-weight: bold;
    color: rgb(30, 70, 120);
}

/* ==================== LISTS ==================== */
.feature-list {
    margin-left: 30px;
    margin-bottom: 20px;
}

.feature-list li {
    font-size: 1.05em;
    font-weight: 500;
    margin-bottom: 12px;
    padding-left: 10px;
    color: rgb(40, 40, 40);
}

.feature-list li::marker {
    color: rgb(60, 140, 70);
    font-weight: bold;
}

/* ==================== TABLES ==================== */
.info-table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    border: 3px solid rgb(90, 140, 190);
}

.info-table thead {
    background: linear-gradient(135deg, rgb(30, 70, 120) 0%, rgb(40, 85, 140) 100%);
    color: white;
}

.info-table thead th {
    padding: 18px;
    font-weight: bold;
    font-size: 1.1em;
    text-align: left;
    border: 2px solid rgb(20, 50, 90);
}

.info-table tbody tr {
    border-bottom: 2px solid rgb(200, 215, 235);
    transition: background 0.3s ease;
}

.info-table tbody tr:nth-child(even) {
    background: rgb(248, 252, 255);
}

.info-table tbody tr:hover {
    background: rgb(235, 245, 252);
}

.info-table tbody td {
    padding: 15px;
    font-weight: 500;
    font-size: 1.02em;
    border: 1px solid rgb(200, 215, 235);
    color: rgb(40, 40, 40);
}

.info-table tbody td strong {
    font-weight: bold;
    color: rgb(30, 70, 120);
}

/* ==================== HIGHLIGHT BOXES ==================== */
.highlight-box {
    background: linear-gradient(135deg, rgb(255, 252, 235) 0%, rgb(255, 248, 220) 100%);
    border: 3px solid rgb(220, 180, 60);
    border-left: 8px solid rgb(220, 180, 60);
    border-radius: 10px;
    padding: 25px;
    margin: 25px 0;
    box-shadow: 0 4px 12px rgba(220, 180, 60, 0.2);
}

.highlight-box h4 {
    color: rgb(160, 100, 20);
    font-size: 1.4em;
    font-weight: bold;
    margin-bottom: 15px;
}

.highlight-box p {
    font-weight: bold;
    color: rgb(70, 50, 20);
    font-size: 1.05em;
}

.highlight-box ul {
    margin-left: 25px;
    margin-top: 15px;
}

.highlight-box li {
    font-weight: 500;
    margin-bottom: 10px;
    color: rgb(70, 50, 20);
}

/* ==================== CASE STUDY BOXES ==================== */
.case-study-box {
    background: linear-gradient(135deg, rgb(245, 250, 255) 0%, rgb(235, 245, 252) 100%);
    border: 3px solid rgb(70, 120, 170);
    border-left: 8px solid rgb(60, 140, 70);
    border-radius: 10px;
    padding: 30px;
    margin: 25px 0;
    box-shadow: 0 5px 15px rgba(70, 120, 170, 0.2);
}

.case-study-box h4 {
    color: rgb(30, 70, 120);
    font-size: 1.5em;
    font-weight: bold;
    margin-bottom: 20px;
}

.case-study-box p {
    font-weight: bold;
    color: rgb(40, 40, 40);
    font-size: 1.05em;
    margin-bottom: 15px;
}

.case-study-box ul {
    margin-left: 25px;
}

.case-study-box li {
    font-weight: 500;
    margin-bottom: 10px;
    color: rgb(40, 40, 40);
}

/* ==================== FLOWCHART STYLES ==================== */
.flowchart-container {
    margin: 30px 0;
    padding: 30px;
    background: rgb(252, 254, 255);
    border: 3px solid rgb(90, 140, 190);
    border-radius: 12px;
}

.flowchart {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.flow-box {
    padding: 20px 30px;
    border-radius: 10px;
    text-align: center;
    font-weight: bold;
    font-size: 1.05em;
    max-width: 400px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
    border: 3px solid;
}

.start-box,
.end-box {
    background: linear-gradient(135deg, rgb(60, 140, 70) 0%, rgb(70, 160, 85) 100%);
    color: white;
    border-color: rgb(45, 110, 55);
}

.process-box {
    background: linear-gradient(135deg, rgb(60, 120, 180) 0%, rgb(80, 140, 200) 100%);
    color: white;
    border-color: rgb(40, 90, 150);
}

.decision-box {
    background: linear-gradient(135deg, rgb(230, 140, 50) 0%, rgb(240, 160, 70) 100%);
    color: white;
    border-color: rgb(190, 110, 30);
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
    padding: 30px 40px;
}

.flow-arrow {
    font-size: 2em;
    font-weight: bold;
    color: rgb(30, 70, 120);
}

/* ==================== MIND MAP STYLES ==================== */
.mindmap-container {
    margin: 30px 0;
    padding: 30px;
    background: rgb(252, 254, 255);
    border: 3px solid rgb(90, 140, 190);
    border-radius: 12px;
    overflow-x: auto;
}

.mindmap-container svg {
    width: 100%;
    height: auto;
    display: block;
}

.mindmap-description {
    margin-top: 25px;
    padding: 20px;
    background: rgb(255, 255, 255);
    border: 2px solid rgb(140, 170, 210);
    border-radius: 8px;
}

.mindmap-description h3 {
    color: rgb(30, 70, 120);
    font-weight: bold;
    margin-bottom: 15px;
}

/* ==================== DISCLAIMER ==================== */
.disclaimer {
    background: linear-gradient(135deg, rgb(255, 245, 245) 0%, rgb(255, 235, 235) 100%);
    border: 3px solid rgb(210, 90, 90);
    border-left: 8px solid rgb(210, 90, 90);
    border-radius: 10px;
    padding: 30px;
    margin: 30px 0;
    box-shadow: 0 4px 12px rgba(210, 90, 90, 0.2);
}

.disclaimer h3 {
    color: rgb(170, 50, 50);
    font-size: 1.6em;
    font-weight: bold;
    margin-bottom: 20px;
}

.disclaimer p {
    font-weight: bold;
    color: rgb(90, 35, 35);
    font-size: 1.05em;
    margin-bottom: 15px;
}

/* ==================== FOOTER ==================== */
footer {
    background: linear-gradient(135deg, rgb(55, 65, 75) 0%, rgb(75, 85, 95) 100%);
    color: white;
    text-align: center;
    padding: 25px;
    border: 3px solid rgb(35, 45, 55);
    border-radius: 12px;
    margin-top: 40px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

footer p {
    font-weight: bold;
    font-size: 1.05em;
    margin: 8px 0;
}

/* ==================== PRINT STYLES ==================== */
@media print {
    body {
        background: white;
        color: black;
        padding: 0;
    }

    header {
        background: rgb(30, 70, 120);
        color: white;
        page-break-after: avoid;
    }

    .print-btn {
        display: none;
    }

    nav {
        page-break-after: always;
    }

    .content-section {
        page-break-inside: avoid;
        border: 2px solid rgb(140, 170, 210);
        box-shadow: none;
    }

    .content-section h2 {
        page-break-after: avoid;
    }

    .info-table {
        page-break-inside: avoid;
    }

    .flowchart-container,
    .mindmap-container {
        page-break-inside: avoid;
    }

    .case-study-box {
        page-break-inside: avoid;
    }

    footer {
        page-break-before: avoid;
    }

    a {
        text-decoration: none;
        color: black;
    }
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 768px) {
    header h1 {
        font-size: 2.2em;
    }

    .subtitle {
        font-size: 1.2em;
    }

    .content-section {
        padding: 20px;
    }

    .content-section h2 {
        font-size: 1.8em;
    }

    .content-section h3 {
        font-size: 1.4em;
    }

    .info-table {
        font-size: 0.9em;
    }

    .info-table thead th,
    .info-table tbody td {
        padding: 10px;
    }

    .flow-box {
        font-size: 0.95em;
        padding: 15px 20px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    header {
        padding: 25px 15px;
    }

    header h1 {
        font-size: 1.8em;
    }

    nav,
    .content-section {
        padding: 15px;
    }

    .content-section h2 {
        font-size: 1.5em;
    }
}

/* ==================== SMOOTH SCROLLING ==================== */
html {
    scroll-behavior: smooth;
}

/* ==================== ACCESSIBILITY ==================== */
:focus {
    outline: 3px solid rgb(60, 140, 70);
    outline-offset: 2px;
}

button:focus,
a:focus {
    outline: 3px solid rgb(60, 140, 70);
}

/* ==================== ANIMATION ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.content-section {
    animation: fadeIn 0.6s ease-out;
}

/* ==================== SPECIAL ELEMENTS ==================== */
.flow-arrow-side {
    font-size: 1.5em;
    font-weight: bold;
    color: rgb(30, 70, 120);
    display: inline-block;
    margin: 0 10px;
}