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

:root {
    --primary-blue: #2E5B8A;
    --accent-teal: #1A8A7D;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --dark-text: #2c3e50;
    --light-text: #5a6c7d;
    --border-light: #e0e6ed;
    --day1-color: #2E5B8A;
    --day2-color: #1A8A7D;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
        sans-serif;
    line-height: 1.6;
    color: var(--dark-text);
    background-color: var(--white);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 600;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: 1rem;
}

a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent-teal);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation Bar */
.navbar {
    position: sticky;
    top: 0;
    background-color: var(--white);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0;
}

.nav-menu li {
    margin: 0;
}

.nav-link {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--dark-text);
    font-weight: 500;
    transition: var(--transition);
    border-bottom: 3px solid transparent;
    margin-bottom: -3px;
}

.nav-link:hover {
    color: var(--primary-blue);
    border-bottom-color: var(--primary-blue);
}

.nav-link.active {
    color: var(--primary-blue);
    border-bottom-color: var(--primary-blue);
}

/* Warning Banner */
.warning-banner {
    background: linear-gradient(135deg, #ff9800, #f57c00);
    color: white;
    padding: 1rem;
    text-align: center;
    font-weight: 500;
}

.warning-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.warning-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    font-weight: bold;
    flex-shrink: 0;
}

.warning-text {
    font-size: 0.95rem;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-teal));
    color: white;
    padding: 6rem 2rem;
    text-align: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    opacity: 0.95;
}

.hero-tagline {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.85;
    font-style: italic;
}

.hero-trainer {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    font-weight: 500;
}

.hero-description {
    font-size: 1.05rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
}

/* Section Styling */
section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.section-intro {
    text-align: center;
    color: var(--light-text);
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.05rem;
}

/* Agenda Section */
.agenda-section {
    background-color: var(--light-bg);
}

.day-group {
    margin-bottom: 4rem;
}

.day-header {
    font-size: 1.5rem;
    margin: 2rem 0 2rem;
    padding: 1.5rem 0;
    border-left: 5px solid var(--primary-blue);
    padding-left: 1.5rem;
}

.day-1 {
    border-left-color: var(--day1-color);
    color: var(--day1-color);
}

.day-2 {
    border-left-color: var(--day2-color);
    color: var(--day2-color);
}

.sessions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

/* Session Cards */
.session-card, .break-card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.session-card {
    border-left: 5px solid var(--day1-color);
}

.session-card.day-2-card {
    border-left-color: var(--day2-color);
}

.session-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.break-card {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: #f5f5f5;
    border-left: 5px solid #cccccc;
    opacity: 0.7;
}

.break-label {
    font-weight: 600;
    color: var(--light-text);
    font-size: 1rem;
}

.break-time {
    font-size: 0.85rem;
    color: var(--light-text);
    margin-top: 0.5rem;
}

.session-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.session-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--day1-color);
    margin: 0;
}

.session-card.day-2-card .session-number {
    color: var(--day2-color);
}

.session-meta {
    display: flex;
    flex-direction: column;
    text-align: right;
    gap: 0.25rem;
}

.session-time {
    font-weight: 600;
    color: var(--dark-text);
    font-size: 0.95rem;
}

.session-duration {
    font-size: 0.85rem;
    color: var(--light-text);
}

.session-title {
    font-size: 1.15rem;
    margin: 0 0 1rem;
    color: var(--dark-text);
}

.session-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    display: inline-block;
    background-color: var(--light-bg);
    color: var(--dark-text);
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
}

.session-details {
    margin-bottom: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-light);
}

.session-details.hidden {
    display: none;
}

.session-details p {
    color: var(--light-text);
    font-size: 0.95rem;
    margin: 0;
}

.slide-link {
    display: inline-block;
    background-color: var(--light-bg);
    color: var(--primary-blue);
    border: 1px solid var(--border-light);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    transition: var(--transition);
    width: 100%;
}

.slide-link:hover {
    background-color: var(--primary-blue);
    color: white;
}

.download-card-featured {
    border: 2px solid var(--accent-teal);
    background-color: #f0faf9;
}

/* Downloads Section */
.downloads-section {
    background-color: var(--white);
}

.downloads-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.download-card {
    background-color: var(--light-bg);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.download-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.download-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-teal));
    border-radius: var(--radius-lg);
}

.icon-pdf, .icon-zip {
    width: 32px;
    height: 32px;
    stroke: white;
    fill: none;
    stroke-width: 2;
}

.download-title {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--dark-text);
}

.download-description {
    color: var(--light-text);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    flex-grow: 1;
}

.download-meta {
    font-size: 0.8rem;
    color: #999;
    margin-bottom: 1rem;
}

.download-btn {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-teal));
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    display: inline-block;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.download-btn:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

/* Exercises Section */
.exercises-section {
    background-color: var(--light-bg);
}

.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.exercises-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--white);
}

.exercises-table thead {
    background-color: var(--primary-blue);
    color: white;
}

.exercises-table th {
    padding: 1.25rem;
    text-align: left;
    font-weight: 600;
}

.exercises-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-light);
}

.exercises-table tbody tr {
    transition: var(--transition);
}

.exercises-table tbody tr:hover {
    background-color: var(--light-bg);
}

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

/* Resources Section */
.resources-section {
    background-color: var(--white);
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.resource-card {
    background-color: var(--light-bg);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border-top: 4px solid var(--accent-teal);
    display: flex;
    flex-direction: column;
}

.resource-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.resource-title {
    color: var(--dark-text);
    margin-bottom: 0.75rem;
}

.resource-description {
    color: var(--light-text);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.resource-link {
    background-color: var(--accent-teal);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 600;
    display: inline-block;
    transition: var(--transition);
}

.resource-link:hover {
    background-color: var(--primary-blue);
    color: white;
}

/* Footer */
.footer {
    background-color: var(--dark-text);
    color: white;
    padding: 3rem 0;
    margin-top: 4rem;
    border-top: 3px solid var(--primary-blue);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.footer-main {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-trainer {
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    opacity: 0.95;
}

.footer-warning {
    font-size: 0.85rem;
    margin-bottom: 0;
    opacity: 0.85;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        flex-wrap: wrap;
    }

    .nav-link {
        padding: 0.5rem 1rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-tagline {
        font-size: 1rem;
    }

    h2 {
        font-size: 2rem;
    }

    .warning-container {
        flex-direction: column;
        gap: 0.5rem;
    }

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

    .downloads-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }

    .resources-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }

    .section-title {
        font-size: 2rem;
    }

    .exercises-table {
        font-size: 0.9rem;
    }

    .exercises-table th,
    .exercises-table td {
        padding: 0.75rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .nav-container {
        padding: 0 1rem;
        flex-direction: column;
        height: auto;
        gap: 1rem;
    }

    .nav-menu {
        width: 100%;
        gap: 0;
    }

    .nav-link {
        flex: 1;
        text-align: center;
        font-size: 0.9rem;
        padding: 0.5rem;
    }

    .hero {
        padding: 3rem 1rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-tagline {
        font-size: 0.9rem;
    }

    .session-header {
        flex-direction: column;
        gap: 0.5rem;
    }

    .session-meta {
        text-align: left;
    }

    .downloads-grid,
    .resources-grid {
        grid-template-columns: 1fr;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .warning-banner,
    .footer {
        display: none;
    }

    section {
        page-break-inside: avoid;
    }

    .slide-link {
        display: none;
    }
}