@charset "UTF-8";

/* Modern Reset and Base Styles */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Microsoft JhengHei', 'Noto Sans TC', 'Source Sans Pro', sans-serif;
    line-height: 1.6;
}

/* Container */
.container {
    background-color: #FFFFFF;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
}

/* Header Styles */
.primary_header {
    width: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 30px 20px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    border-bottom: none;
}

.title {
    font-weight: bold;
    font-style: normal;
    font-family: 'Microsoft JhengHei', 'Noto Sans TC', 'Source Sans Pro', sans-serif;
    text-align: center;
    color: #FFFFFF;
    letter-spacing: 2px;
    margin: 0;
    font-size: 2.5em;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.tagline {
    color: rgba(255,255,255,0.95);
    font-size: 1.2em;
    margin-top: 10px;
    font-weight: 300;
}

/* Navigation */
.secondary_header {
    width: 100%;
    background: #2c3e50;
    padding: 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    clear: left;
}

.container .secondary_header ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
}

.secondary_header ul li {
    list-style: none;
    float: none;
    margin: 0;
    font-family: 'Microsoft JhengHei', 'Noto Sans TC', 'Source Sans Pro', sans-serif;
    font-weight: 500;
    color: #FFFFFF;
    letter-spacing: 1px;
    text-align: center;
    width: auto;
    transition: all 0.3s ease;
}

.secondary_header ul li a {
    display: block;
    padding: 15px 25px;
    color: #FFFFFF;
    text-decoration: none;
}

.secondary_header ul li:hover,
.secondary_header ul li a:hover {
    background: #34495e;
    color: #3498db;
    cursor: pointer;
}

/* Section Styles */
section {
    padding: 40px 20px;
    animation: fadeIn 0.5s ease-in;
}

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

.noDisplay {
    display: none;
}

/* Content Wrapper */
.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    margin-bottom: 30px;
}

/* Articles */
.left_article {
    background-color: #FFFFFF;
    width: 100%;
    float: none;
    font-family: 'Microsoft JhengHei', 'Noto Sans TC', 'Source Sans Pro', sans-serif;
    color: #343434;
    padding: 20px;
}

.container .left_article h3 {
    color: #667eea;
    font-size: 2em;
    margin-bottom: 20px;
    border-bottom: 3px solid #667eea;
    padding: 0 0 10px 0;
    font-weight: bold;
    text-transform: none;
}

.container .left_article h4 {
    color: #764ba2;
    font-size: 1.5em;
    margin-top: 25px;
    margin-bottom: 15px;
}

.container .left_article p {
    padding: 0;
    text-align: left;
    line-height: 1.8;
    margin: 15px 0;
    color: #333;
    font-size: 1.1em;
}

.right_article {
    width: 100%;
    float: none;
    background-color: transparent;
    padding: 20px;
}

.right_article img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    transition: transform 0.3s ease;
}

.right_article img:hover {
    transform: scale(1.05);
}

.placeholder {
    width: 100%;
    padding: 0;
    height: auto;
}

/* Highlight Boxes */
.highlight-box {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 25px;
    border-radius: 10px;
    margin: 20px 0;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.highlight-box h4 {
    color: #667eea;
    margin-top: 0;
}

.highlight-box ul {
    list-style: none;
    padding: 0;
}

.highlight-box li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    font-size: 1.05em;
}

.highlight-box li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
    font-size: 1.3em;
}

/* Service Grid */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.service-card {
    background: white;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    border-left: 4px solid #667eea;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

.service-card h4 {
    color: #667eea;
    margin-top: 0;
    font-size: 1.3em;
}

.service-card .icon {
    font-size: 3em;
    margin-bottom: 15px;
}

/* Features Row */
.row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    padding: 40px 20px;
    background: #f8f9fa;
    width: 100%;
    margin: 0;
}

.row.blockDisplay {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    background: #2c3e50;
    padding: 30px 20px;
}

.columns {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    width: 100%;
    float: none;
    font-family: 'Microsoft JhengHei', 'Noto Sans TC', 'Source Sans Pro', sans-serif;
    color: #333;
    line-height: 1.6;
    text-align: left;
    margin: 0;
}

.columns:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

.row .columns p {
    padding: 0;
    margin: 10px 0;
}

.container .columns h4 {
    color: #667eea;
    font-size: 1.4em;
    margin: 15px 0;
    text-align: center;
}

.thumbnail {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin: 0;
}

.thumbnail_align {
    text-align: center;
    margin-bottom: 15px;
}

/* Column Halves */
.column_half {
    width: 100%;
    float: none;
    margin: 0;
    padding: 20px;
    text-align: center;
}

.left_half {
    background-color: #52BAD5;
}

.right_half {
    background-color: #01B2D1;
    color: #FFFFFF;
    font-family: 'Microsoft JhengHei', 'Noto Sans TC', 'Source Sans Pro', sans-serif;
    text-align: center;
    font-weight: bold;
}

.container .column_half.left_half h2,
.column_title {
    color: #FFFFFF;
    font-family: 'Microsoft JhengHei', 'Noto Sans TC', 'Source Sans Pro', sans-serif;
    text-align: center;
    padding: 25px 0;
    font-size: 1.3em;
}

/* Chat Styles */
.chat-container {
    max-width: 900px;
    margin: 20px auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    padding: 30px;
}

.chat-messages {
    height: 450px;
    overflow-y: auto;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    background: #f8f9fa;
}

.message {
    margin-bottom: 15px;
    padding: 12px 18px;
    border-radius: 12px;
    max-width: 80%;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: translateX(0); }
}

.message.user {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    margin-left: auto;
    text-align: right;
}

.message.bot {
    background: #e9ecef;
    color: #333;
    margin-right: auto;
    white-space: pre-wrap;
    border-left: 4px solid #667eea;
}

.chat-input-container {
    display: flex;
    gap: 10px;
}

.chat-input {
    flex: 1;
    padding: 12px 15px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.3s ease;
}

.chat-input:focus {
    outline: none;
    border-color: #667eea;
}

.chat-button {
    padding: 12px 25px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.chat-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.chat-button:disabled {
    background: #6c757d;
    cursor: not-allowed;
}

.loading {
    color: #666;
    font-style: italic;
}

/* Footer */
.footer {
    background: #1a252f;
    color: white;
    text-align: center;
    padding: 20px;
}

.copyright {
    text-align: center;
    background-color: transparent;
    color: rgba(255,255,255,0.8);
    text-transform: none;
    font-weight: lighter;
    letter-spacing: 2px;
    border-top-width: 0;
    font-family: 'Microsoft JhengHei', 'Noto Sans TC', 'Source Sans Pro', sans-serif;
    padding: 0;
    margin: 0;
}

/* Utility Classes */
.badge {
    display: inline-block;
    padding: 5px 15px;
    background: #667eea;
    color: white;
    border-radius: 20px;
    font-size: 0.9em;
    margin: 5px;
}

.text-center {
    text-align: center;
}

/* ====== RESPONSIVE DESIGN ====== */

/* Mobile Small (max 320px) */
@media (max-width: 320px) {
    .primary_header {
        padding: 20px 15px;
    }

    .primary_header h1,
    .title {
        font-size: 1.5em;
        letter-spacing: 1px;
    }

    .tagline {
        font-size: 0.85em;
        margin-top: 8px;
    }

    .secondary_header {
        position: relative;
    }

    .secondary_header ul {
        flex-direction: column;
    }

    .secondary_header ul li {
        width: 100%;
        margin: 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    .secondary_header ul li a {
        text-align: center;
        padding: 14px;
        font-size: 0.95em;
    }

    section {
        padding: 25px 15px;
    }

    .content-wrapper {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .left_article,
    .right_article {
        width: 100%;
        height: auto;
        padding: 10px;
    }

    .container .left_article h3 {
        margin-top: 15px;
        font-size: 1.4em;
        margin-bottom: 15px;
        padding-bottom: 8px;
    }

    .container .left_article h4 {
        font-size: 1.2em;
        margin-top: 20px;
        margin-bottom: 12px;
    }

    .container .left_article p {
        font-size: 1em;
        margin: 12px 0;
        line-height: 1.7;
    }

    .highlight-box {
        padding: 18px;
        margin: 15px 0;
    }

    .highlight-box h4 {
        font-size: 1.1em;
    }

    .highlight-box li {
        font-size: 0.95em;
        padding: 8px 0;
        padding-left: 25px;
    }

    .highlight-box li:before {
        font-size: 1.1em;
    }

    .placeholder {
        width: 100%;
        max-width: 100%;
        height: auto;
        margin: 0;
        padding: 15px 0;
    }

    .right_article img {
        border-radius: 8px;
    }

    .service-grid {
        grid-template-columns: 1fr;
        gap: 18px;
        margin: 20px 0;
    }

    .service-card {
        padding: 20px;
    }

    .service-card .icon {
        font-size: 2.5em;
        margin-bottom: 12px;
    }

    .service-card h4 {
        font-size: 1.2em;
    }

    .service-card p {
        font-size: 0.95em;
    }

    .row {
        grid-template-columns: 1fr;
        padding: 25px 15px;
        gap: 20px;
    }

    .columns {
        width: 100%;
        margin: 0;
        padding: 18px;
    }

    .container .columns h4 {
        font-size: 1.25em;
    }

    .columns p {
        padding: 0;
        font-size: 0.95em;
    }

    .thumbnail {
        height: 180px;
        border-radius: 6px;
    }

    .row.blockDisplay {
        grid-template-columns: 1fr;
        padding: 25px 15px;
        gap: 15px;
    }

    .column_half {
        width: 100%;
        padding: 18px 15px;
    }

    .column_title {
        padding: 20px 0;
        font-size: 1.1em;
    }

    .chat-container {
        padding: 20px 15px;
        border-radius: 12px;
    }

    .chat-messages {
        height: 300px;
        padding: 15px;
        margin-bottom: 15px;
    }

    .message {
        padding: 10px 14px;
        font-size: 0.95em;
        max-width: 85%;
    }

    .chat-input {
        padding: 10px 12px;
        font-size: 14px;
    }

    .chat-button {
        padding: 10px 18px;
        font-size: 14px;
    }

    .badge {
        padding: 4px 12px;
        font-size: 0.85em;
    }

    .footer {
        padding: 18px 15px;
    }

    .copyright {
        font-size: 0.85em;
        letter-spacing: 1px;
    }
}

/* Mobile/Tablet (321px - 768px) */
@media (min-width: 321px) and (max-width: 768px) {
    .primary_header {
        padding: 25px 20px;
    }

    .primary_header h1,
    .title {
        font-size: 1.9em;
        letter-spacing: 1.5px;
    }

    .tagline {
        font-size: 1em;
        margin-top: 10px;
    }

    .secondary_header {
        position: relative;
    }

    .secondary_header ul {
        flex-direction: column;
    }

    .secondary_header ul li {
        width: 100%;
        margin: 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    .secondary_header ul li a {
        text-align: center;
        padding: 16px;
        font-size: 1em;
    }

    section {
        padding: 35px 20px;
    }

    .content-wrapper {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .left_article,
    .right_article {
        width: 100%;
        height: auto;
        padding: 15px;
    }

    .container .left_article h3 {
        font-size: 1.7em;
        margin-bottom: 18px;
        padding-bottom: 10px;
    }

    .container .left_article h4 {
        font-size: 1.35em;
        margin-top: 22px;
        margin-bottom: 14px;
    }

    .container .left_article p {
        font-size: 1.05em;
        margin: 14px 0;
        line-height: 1.75;
    }

    .highlight-box {
        padding: 22px;
        margin: 18px 0;
    }

    .highlight-box h4 {
        font-size: 1.2em;
    }

    .highlight-box li {
        font-size: 1em;
        padding: 9px 0;
        padding-left: 28px;
    }

    .placeholder {
        margin: 0;
        padding: 20px 0;
        width: 100%;
        max-width: 100%;
        height: auto;
        max-height: 100%;
    }

    .right_article img {
        border-radius: 10px;
    }

    .service-grid {
        grid-template-columns: 1fr;
        gap: 22px;
        margin: 25px 0;
    }

    .service-card {
        padding: 22px;
    }

    .service-card .icon {
        font-size: 2.8em;
        margin-bottom: 14px;
    }

    .service-card h4 {
        font-size: 1.25em;
    }

    .service-card p {
        font-size: 1em;
    }

    .row {
        grid-template-columns: 1fr;
        padding: 30px 20px;
        gap: 25px;
    }

    .columns {
        width: 100%;
        margin: 0;
        padding: 22px;
    }

    .container .columns h4 {
        font-size: 1.35em;
    }

    .columns p {
        padding: 0;
        font-size: 1em;
    }

    .thumbnail {
        height: 200px;
        border-radius: 8px;
    }

    .row.blockDisplay {
        grid-template-columns: 1fr;
        padding: 28px 20px;
        gap: 18px;
    }

    .column_half {
        width: 100%;
        padding: 22px 18px;
    }

    .column_title {
        padding: 22px 0;
        font-size: 1.2em;
    }

    .chat-container {
        padding: 25px 20px;
        border-radius: 14px;
        margin: 15px;
    }

    .chat-messages {
        height: 350px;
        padding: 18px;
        margin-bottom: 18px;
    }

    .message {
        padding: 11px 16px;
        font-size: 1em;
        max-width: 82%;
    }

    .chat-input {
        padding: 11px 14px;
        font-size: 15px;
    }

    .chat-button {
        padding: 11px 20px;
        font-size: 15px;
    }

    .badge {
        padding: 5px 14px;
        font-size: 0.88em;
    }

    .footer {
        padding: 20px;
    }

    .copyright {
        font-size: 0.9em;
        letter-spacing: 1.5px;
    }
}

/* Tablet/Small Desktop (769px - 1000px) */
@media (min-width: 769px) and (max-width: 1000px) {
    .secondary_header {
        padding: 0;
    }

    .secondary_header ul li a {
        padding: 15px 15px;
    }

    .left_article,
    .right_article {
        height: auto;
    }

    .placeholder {
        width: 100%;
        margin: 0;
        padding: 0;
    }

    .row {
        grid-template-columns: repeat(2, 1fr);
    }

    .container .columns p {
        padding: 0;
    }

    .content-wrapper {
        gap: 30px;
    }
}

/* Desktop (1001px and above) */
@media (min-width: 1001px) {
    .row {
        grid-template-columns: repeat(4, 1fr);
    }
}