/* Atlassian Rovo Course Styles - Based on Atlassian Design System */

/* CSS Variables - Atlassian Color Palette */
:root {
    /* Brand Colors */
    --atlassian-blue: #0052CC;
    --atlassian-blue-hover: #0065FF;
    --atlassian-blue-pressed: #0747A6;
    --atlassian-blue-light: #DEEBFF;

    /* Rovo Brand */
    --rovo-purple: #5243AA;
    --rovo-purple-light: #BF63F3;
    --rovo-teal: #00B8D9;

    /* Neutrals */
    --neutral-900: #101214;
    --neutral-800: #172B4D;
    --neutral-700: #253858;
    --neutral-600: #42526E;
    --neutral-500: #5E6C84;
    --neutral-400: #7A869A;
    --neutral-300: #97A0AF;
    --neutral-200: #C1C7D0;
    --neutral-100: #DFE1E6;
    --neutral-50: #EBECF0;
    --neutral-30: #F4F5F7;
    --neutral-20: #FAFBFC;
    --neutral-0: #FFFFFF;

    /* Status Colors */
    --success-green: #36B37E;
    --success-green-bold: #006644;
    --warning-yellow: #FFAB00;
    --warning-yellow-bold: #FF8B00;
    --danger-red: #DE350B;
    --danger-red-bold: #BF2600;

    /* Course Level Colors */
    --course-entry: #36B37E;
    --course-beginner: #0065FF;
    --course-intermediate: #FF8B00;
    --course-advanced: #DE350B;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(9, 30, 66, 0.25);
    --shadow-md: 0 4px 8px -2px rgba(9, 30, 66, 0.25), 0 0 1px rgba(9, 30, 66, 0.31);
    --shadow-lg: 0 8px 16px -4px rgba(9, 30, 66, 0.25), 0 0 1px rgba(9, 30, 66, 0.31);
    --shadow-xl: 0 12px 24px -6px rgba(9, 30, 66, 0.25), 0 0 1px rgba(9, 30, 66, 0.31);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans TC', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--neutral-0);
    color: var(--neutral-800);
    line-height: 1.5;
    min-height: 100vh;
    font-size: 16px;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0;
    background: var(--neutral-0);
    border-bottom: 1px solid var(--neutral-100);
    box-shadow: var(--shadow-sm);
}

.nav-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 2rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    font-size: 1.125rem;
    flex-shrink: 0;
    color: var(--neutral-800);
}

.nav-logo svg {
    width: 32px;
    height: 32px;
}

.nav-tabs {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.nav-cta {
    background: var(--atlassian-blue);
    color: var(--neutral-0);
    padding: 0.625rem 1.25rem;
    border-radius: 3px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: background-color 0.2s ease;
    border: none;
    cursor: pointer;
    flex-shrink: 0;
}

.nav-cta:hover {
    background: var(--atlassian-blue-hover);
}

.nav-cta:active {
    background: var(--atlassian-blue-pressed);
}

.course-tab {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 3px;
    background: transparent;
    color: var(--neutral-600);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: inherit;
    white-space: nowrap;
}

.course-tab:hover {
    background: var(--neutral-30);
    color: var(--neutral-800);
}

.course-tab.active {
    background: var(--atlassian-blue-light);
    color: var(--atlassian-blue);
}

.course-tab .level-badge {
    font-size: 0.625rem;
    padding: 0.125rem 0.375rem;
    border-radius: 3px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.course-tab .level-badge.entry {
    background: rgba(54, 179, 126, 0.15);
    color: var(--success-green-bold);
}

.course-tab .level-badge.beginner {
    background: rgba(0, 101, 255, 0.15);
    color: var(--atlassian-blue);
}

.course-tab .level-badge.intermediate {
    background: rgba(255, 139, 0, 0.15);
    color: var(--warning-yellow-bold);
}

.course-tab .level-badge.advanced {
    background: rgba(222, 53, 11, 0.15);
    color: var(--danger-red);
}

.course-tab.active .level-badge.entry {
    background: var(--course-entry);
    color: var(--neutral-0);
}

.course-tab.active .level-badge.beginner {
    background: var(--course-beginner);
    color: var(--neutral-0);
}

.course-tab.active .level-badge.intermediate {
    background: var(--course-intermediate);
    color: var(--neutral-0);
}

.course-tab.active .level-badge.advanced {
    background: var(--course-advanced);
    color: var(--neutral-0);
}

/* Course Content Sections */
.course-content {
    display: none;
}

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

/* Hero Section */
.hero {
    padding: 8rem 2rem 5rem 2rem;
    text-align: center;
    position: relative;
    background: linear-gradient(180deg, var(--neutral-30) 0%, var(--neutral-0) 100%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--neutral-0);
    border: 1px solid var(--neutral-100);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    color: var(--rovo-purple);
    box-shadow: var(--shadow-sm);
}

.hero-badge svg {
    width: 16px;
    height: 16px;
    stroke: var(--rovo-purple);
}

.course-level-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.course-level-tag.entry {
    background: rgba(54, 179, 126, 0.15);
    color: var(--success-green-bold);
}

.course-level-tag.beginner {
    background: rgba(0, 101, 255, 0.15);
    color: var(--atlassian-blue);
}

.course-level-tag.intermediate {
    background: rgba(255, 139, 0, 0.15);
    color: var(--warning-yellow-bold);
}

.course-level-tag.advanced {
    background: rgba(222, 53, 11, 0.15);
    color: var(--danger-red);
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.25rem;
    color: var(--neutral-900);
}

.hero-highlight {
    background: linear-gradient(135deg, var(--rovo-purple), var(--rovo-teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--neutral-600);
    margin-bottom: 2rem;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.hero-cta-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    background: var(--atlassian-blue);
    color: var(--neutral-0);
    padding: 0.875rem 1.75rem;
    border-radius: 3px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--atlassian-blue-hover);
}

.btn-primary:active {
    background: var(--atlassian-blue-pressed);
}

.btn-secondary {
    background: transparent;
    color: var(--atlassian-blue);
    padding: 0.875rem 1.75rem;
    border-radius: 3px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.2s ease;
    border: 1px solid var(--neutral-200);
    cursor: pointer;
}

.btn-secondary:hover {
    background: var(--neutral-30);
    border-color: var(--neutral-300);
}

.hero-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2.5rem;
    flex-wrap: wrap;
}

.hero-meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--neutral-500);
    font-size: 0.875rem;
}

.hero-meta-item svg {
    width: 20px;
    height: 20px;
    stroke: var(--neutral-400);
}

/* Section Styles */
section {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-tag {
    color: var(--rovo-purple);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--neutral-900);
}

.section-subtitle {
    color: var(--neutral-600);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Pain Points Section */
.pain-points {
    background: var(--neutral-30);
    padding: 5rem 2rem;
    max-width: none;
}

.pain-points > * {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.pain-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.pain-card {
    background: var(--neutral-0);
    border: 1px solid var(--neutral-100);
    border-radius: 8px;
    padding: 1.5rem;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.pain-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--neutral-200);
}

.pain-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(82, 67, 170, 0.1), rgba(0, 184, 217, 0.1));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.pain-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--neutral-900);
}

.pain-card p {
    color: var(--neutral-600);
    font-size: 0.875rem;
    line-height: 1.6;
}

.pain-solution {
    text-align: center;
    margin-top: 2rem;
    padding: 1.5rem 2rem;
    background: var(--neutral-0);
    border-radius: 8px;
    border: 2px solid var(--rovo-purple);
}

.pain-solution p {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--neutral-800);
}

.pain-solution strong {
    color: var(--rovo-purple);
}

/* Curriculum Section */
.curriculum-grid {
    display: grid;
    gap: 1.25rem;
}

.curriculum-card {
    background: var(--neutral-0);
    border: 1px solid var(--neutral-100);
    border-radius: 8px;
    padding: 1.75rem;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1.5rem;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.curriculum-card:hover {
    border-color: var(--rovo-purple);
    box-shadow: var(--shadow-md);
}

.curriculum-number {
    width: 48px;
    height: 48px;
    background: var(--rovo-purple);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--neutral-0);
}

.curriculum-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--neutral-900);
}

.curriculum-content h3 span {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--rovo-teal);
    margin-top: 0.25rem;
}

.curriculum-content > p {
    color: var(--neutral-600);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.curriculum-list {
    list-style: none;
    display: grid;
    gap: 0.5rem;
}

.curriculum-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--neutral-700);
    font-size: 0.875rem;
    line-height: 1.5;
}

.curriculum-list li::before {
    content: '\2713';
    color: var(--success-green);
    font-weight: bold;
    flex-shrink: 0;
}

/* Results Table */
.results-table {
    width: 100%;
    max-width: 700px;
    margin: 2rem auto 0;
    border-collapse: collapse;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.results-table th,
.results-table td {
    padding: 1rem 1.5rem;
    text-align: center;
    border-bottom: 1px solid var(--neutral-100);
}

.results-table th {
    background: var(--neutral-50);
    font-weight: 600;
    font-size: 1rem;
    text-transform: none;
    letter-spacing: 0;
    color: var(--neutral-700);
}

.results-table td {
    background: var(--neutral-0);
    font-size: 0.9rem;
}

.results-table tr:last-child td {
    border-bottom: none;
}

.before-text {
    color: var(--neutral-500);
}

.after-text {
    color: var(--success-green);
    font-weight: 500;
}

/* Audience Section */
.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.audience-card {
    background: var(--neutral-0);
    border: 1px solid var(--neutral-100);
    border-radius: 8px;
    padding: 1.75rem;
    box-shadow: var(--shadow-sm);
}

.audience-card.positive {
    border-left: 4px solid var(--success-green);
}

.audience-card.negative {
    border-left: 4px solid var(--warning-yellow);
}

.audience-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--neutral-900);
}

.audience-card.positive h3 {
    color: var(--success-green-bold);
}

.audience-card.negative h3 {
    color: var(--warning-yellow-bold);
}

.audience-list {
    list-style: none;
    display: grid;
    gap: 0.75rem;
}

.audience-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--neutral-700);
    font-size: 0.875rem;
    line-height: 1.5;
}

.audience-list li span {
    flex-shrink: 0;
}

/* Prerequisites */
.prerequisites {
    background: rgba(255, 139, 0, 0.08);
    border: 1px solid rgba(255, 139, 0, 0.3);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    margin-top: 2rem;
}

.prerequisites h4 {
    color: var(--warning-yellow-bold);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.prerequisites p {
    color: var(--neutral-700);
    font-size: 0.875rem;
}

/* Course Info Card */
.course-info-card {
    background: var(--neutral-0);
    border: 1px solid var(--neutral-100);
    border-radius: 12px;
    padding: 2.5rem;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: var(--shadow-md);
}

.course-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--neutral-100);
}

.course-info-item {
    text-align: center;
}

.course-info-item .icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.course-info-item .label {
    color: var(--neutral-500);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.course-info-item .value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--neutral-900);
}

.course-cta-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    padding: 3rem 2rem;
    border-top: 1px solid var(--neutral-100);
    text-align: center;
    background: var(--neutral-30);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: var(--neutral-800);
    font-weight: 600;
}

.footer p {
    color: var(--neutral-500);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 1200px) {
    .nav-content {
        flex-direction: column;
        gap: 0.75rem;
        padding: 0.75rem 1.5rem;
    }

    .nav-tabs {
        order: 3;
        width: 100%;
        justify-content: center;
    }

    .hero {
        padding-top: 10rem;
    }
}

@media (max-width: 768px) {
    .nav-tabs {
        gap: 0.25rem;
    }

    .course-tab {
        padding: 0.375rem 0.5rem;
        font-size: 0.75rem;
    }

    .course-tab .level-badge {
        font-size: 0.5rem;
        padding: 0.1rem 0.25rem;
    }

    .curriculum-card {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .curriculum-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .audience-grid {
        grid-template-columns: 1fr;
    }

    .hero-meta {
        flex-direction: column;
        gap: 0.75rem;
    }

    .hero {
        padding-top: 12rem;
    }

    section {
        padding: 3rem 1.5rem;
    }

    .pain-points {
        padding: 3rem 1.5rem;
    }
}