* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --osu-orange: #FF6600;
    --osu-black: #000000;
    --osu-gray: #707372;
    --osu-light-gray: #F0F0F0;
    --osu-white: #FFFFFF;
    --qt-red: #DA291C;
    --qt-blue: #004B87;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--osu-black);
    background-color: var(--osu-white);
}

/* Login Modal Styles */
.login-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--osu-orange) 0%, var(--qt-red) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.login-content {
    background: var(--osu-white);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    max-width: 500px;
    width: 90%;
    text-align: center;
}

.login-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.login-logo {
    height: 60px;
    width: auto;
}

.login-header h2 {
    font-size: 1.8rem;
    color: var(--osu-black);
    font-weight: 700;
    margin: 0;
    flex: 1;
    min-width: 200px;
}

.login-form {
    text-align: left;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--osu-black);
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--osu-light-gray);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    box-sizing: border-box;
}

.form-group input:focus {
    outline: none;
    border-color: var(--osu-orange);
    box-shadow: 0 0 0 3px rgba(255, 102, 0, 0.1);
}

.login-button {
    width: 100%;
    background: linear-gradient(135deg, var(--osu-orange) 0%, var(--qt-red) 100%);
    color: var(--osu-white);
    border: none;
    padding: 14px 24px;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    margin-bottom: 1rem;
}

.login-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(218, 41, 28, 0.3);
}

.login-button:active {
    transform: translateY(0);
}

.login-error {
    color: var(--qt-red);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    min-height: 1.2rem;
    font-weight: 500;
}

.login-footer {
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: var(--osu-gray);
    line-height: 1.4;
}

.main-content {
    display: none;
}

.main-content.authenticated {
    display: block;
}

/* Responsive adjustments for login */
@media (max-width: 768px) {
    .login-content {
        padding: 2rem 1.5rem;
        margin: 1rem;
    }

    .login-header {
        flex-direction: column;
        gap: 1rem;
    }

    .login-logo {
        height: 50px;
    }

    .login-header h2 {
        font-size: 1.5rem;
        min-width: auto;
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: var(--osu-white);
    color: var(--osu-black);
    padding: 1.5rem 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border-bottom: 3px solid var(--osu-orange);
}

header h1 {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: var(--osu-black);
}

.tagline {
    font-size: 1.1rem;
    color: var(--osu-gray);
    font-weight: 500;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.header-logo {
    height: 80px;
    width: auto;
    object-fit: contain;
}

.left-logo {
    flex-shrink: 0;
}

.right-logo {
    flex-shrink: 0;
}

.header-text {
    flex: 1;
    text-align: center;
    min-width: 0;
}

.tab-nav {
    background-color: var(--osu-black);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.tab-nav .container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.tab-button {
    background: none;
    border: none;
    color: var(--osu-white);
    padding: 1rem 1.5rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.tab-button:hover {
    background-color: rgba(255, 102, 0, 0.1);
}

.tab-button.active {
    background-color: var(--osu-orange);
}

.tab-button.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--qt-red);
}

main {
    padding: 2rem 0;
    min-height: 60vh;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

h2 {
    color: var(--osu-orange);
    font-size: 2rem;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--osu-orange);
    padding-bottom: 0.5rem;
}

h3 {
    color: var(--osu-black);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.content-section {
    background-color: var(--osu-light-gray);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.content-section p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.content-section ul {
    list-style-position: inside;
    margin-left: 1rem;
}

.content-section li {
    margin-bottom: 0.5rem;
    color: var(--osu-gray);
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.program-card {
    background-color: var(--osu-white);
    border: 2px solid var(--osu-orange);
    border-radius: 8px;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.program-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(255, 102, 0, 0.3);
}

.program-card h3 {
    color: var(--osu-orange);
    margin-bottom: 1rem;
}

.program-card ul {
    list-style: none;
    margin-top: 1rem;
}

.program-card li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--osu-light-gray);
}

.career-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.career-card {
    background-color: var(--osu-white);
    border-left: 4px solid var(--qt-red);
    padding: 1.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.career-card h4 {
    color: var(--qt-red);
    margin-bottom: 0.5rem;
}

.salary-range {
    color: var(--osu-gray);
    font-weight: 600;
    font-size: 0.9rem;
}

.benefits-section {
    margin-top: 3rem;
    background-color: var(--osu-light-gray);
    padding: 2rem;
    border-radius: 8px;
}

.benefits-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    list-style: none;
}

.benefits-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.benefits-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--osu-orange);
    font-weight: bold;
}

.stories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.story-card {
    background-color: var(--osu-white);
    border: 1px solid var(--osu-light-gray);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.story-card h3 {
    color: var(--osu-orange);
    margin-bottom: 0.5rem;
}

.story-title {
    color: var(--qt-red);
    font-weight: 600;
    margin-bottom: 1rem;
}

.story-date {
    color: var(--osu-gray);
    font-size: 0.9rem;
    font-style: italic;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

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

.cta-button {
    display: inline-block;
    background-color: var(--osu-orange);
    color: var(--osu-white);
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    margin: 1rem 0;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: #CC5200;
}

.cta-button.secondary {
    background-color: var(--qt-red);
}

.cta-button.secondary:hover {
    background-color: #B02116;
}

.contact-info {
    margin-top: 1rem;
    color: var(--osu-gray);
}

.info-section {
    background-color: var(--osu-light-gray);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
}

.info-section p {
    margin-bottom: 1rem;
}

/* Instructor Section Styles */
.instructor-section {
    margin: 3rem 0;
    background-color: var(--osu-light-gray);
    padding: 2rem;
    border-radius: 8px;
}

.instructor-content {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    margin-top: 1.5rem;
}

.instructor-photo {
    flex-shrink: 0;
}

.instructor-photo img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.instructor-bio {
    flex: 1;
}

.instructor-bio h4 {
    color: var(--osu-orange);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.instructor-title {
    color: var(--osu-gray);
    font-style: italic;
    margin-bottom: 1rem;
}

/* Video Section Styles */
.video-section {
    margin: 3rem 0;
}

.video-container {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    background-color: var(--osu-light-gray);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 8px;
}

.video-placeholder {
    background-color: var(--osu-light-gray);
    padding: 4rem 2rem;
    text-align: center;
    border-radius: 8px;
    border: 2px dashed var(--osu-gray);
}

.video-placeholder p {
    color: var(--osu-gray);
    font-size: 1.1rem;
}

/* Curriculum Section Styles */
.curriculum-section {
    margin: 3rem 0;
}

.curriculum-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.curriculum-module {
    background-color: var(--osu-white);
    border: 1px solid var(--osu-light-gray);
    border-left: 4px solid var(--osu-orange);
    padding: 1.5rem;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.curriculum-module h4 {
    color: var(--osu-orange);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.curriculum-module ul {
    list-style: none;
    padding: 0;
}

.curriculum-module li {
    padding: 0.4rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--osu-gray);
    line-height: 1.6;
}

.curriculum-module li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--qt-red);
}

/* Course Overview Styles */
.course-overview {
    margin: 2rem 0;
}

/* Survey Section Styles */
.survey-section {
    background: linear-gradient(135deg, var(--osu-light-gray) 0%, #f8f9fa 100%);
    padding: 2.5rem;
    border-radius: 12px;
    margin: 3rem 0;
    border: 2px solid var(--osu-orange);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    text-align: center;
}

.survey-section h3 {
    color: var(--osu-orange);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.survey-section p {
    color: var(--osu-gray);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.survey-container {
    position: relative;
    width: 100%;
    max-width: 640px;
    margin: 0 auto;
    background: var(--osu-white);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    overflow: hidden;
}

.survey-container iframe {
    width: 100%;
    height: 480px;
    border: none;
    display: block;
}

.survey-note {
    font-size: 0.9rem;
    color: var(--osu-gray);
    margin-top: 1.5rem;
    font-style: italic;
}

/* Responsive adjustments for survey */
@media (max-width: 768px) {
    .survey-section {
        padding: 2rem 1.5rem;
        margin: 2rem 0;
    }

    .survey-section h3 {
        font-size: 1.5rem;
    }

    .survey-container {
        max-width: 100%;
    }

    .survey-container iframe {
        height: 400px;
    }

    .survey-section p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .survey-container iframe {
        height: 350px;
    }
}

/* Outcomes Section Styles */
.outcomes-section {
    background-color: var(--osu-light-gray);
    padding: 2rem;
    border-radius: 8px;
    margin: 3rem 0;
}

.outcomes-list {
    list-style: none;
    padding: 0;
    margin-top: 1rem;
}

.outcomes-list li {
    padding: 0.8rem 0;
    padding-left: 2rem;
    position: relative;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.outcomes-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--osu-orange);
    font-weight: bold;
    font-size: 1.2rem;
}

/* Partnership Page Styles */
.programs-section {
    margin: 3rem 0;
}

.benefit-list {
    list-style: none;
    padding: 0;
}

.benefit-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.95rem;
}

.benefit-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--osu-orange);
    font-weight: bold;
}

.implementation-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.step-card {
    text-align: center;
    padding: 2rem 1.5rem;
    background-color: var(--osu-white);
    border: 2px solid var(--osu-light-gray);
    border-radius: 8px;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    border-color: var(--osu-orange);
}

.step-number {
    width: 50px;
    height: 50px;
    background-color: var(--osu-orange);
    color: var(--osu-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.step-card h4 {
    color: var(--osu-black);
    margin-bottom: 0.5rem;
}

.step-card p {
    color: var(--osu-gray);
    font-size: 0.95rem;
}

.cta-section {
    background-color: var(--osu-light-gray);
    padding: 3rem 2rem;
    border-radius: 8px;
    text-align: center;
    margin: 3rem 0;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

/* Internship Page Styles */
.qualification-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.qualification-card {
    background-color: var(--osu-white);
    border: 1px solid var(--osu-light-gray);
    border-top: 3px solid var(--osu-orange);
    padding: 1.5rem;
    border-radius: 4px;
}

.qualification-card h4 {
    color: var(--osu-orange);
    margin-bottom: 1rem;
}

.qualification-card ul {
    list-style: none;
    padding: 0;
}

.qualification-card li {
    padding: 0.4rem 0;
    padding-left: 1.2rem;
    position: relative;
    color: var(--osu-gray);
}

.qualification-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--qt-red);
    font-weight: bold;
}

.timeline-section {
    margin: 3rem 0;
    background-color: var(--osu-light-gray);
    padding: 2rem;
    border-radius: 8px;
}

.timeline-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
}

.timeline-card {
    background-color: var(--osu-white);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.timeline-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.timeline-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.timeline-card h4 {
    color: var(--osu-orange);
    margin-bottom: 1rem;
}

.timeline-card p {
    color: var(--osu-gray);
    line-height: 1.6;
}

.coordinators-section {
    margin: 3rem 0;
}

.coordinator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
}

.coordinator-card {
    background-color: var(--osu-white);
    border: 2px solid var(--osu-light-gray);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
}

.coordinator-card h4 {
    color: var(--osu-orange);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.coordinator-title {
    color: var(--osu-gray);
    font-style: italic;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

/* Contact Page Styles */
.contact-person {
    text-align: left;
}

.contact-person h4 {
    color: var(--osu-orange);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.contact-title {
    color: var(--osu-gray);
    font-style: italic;
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.contact-info a {
    color: var(--qt-red);
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

.info-sections {
    margin: 3rem 0;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
}

.info-card {
    background-color: var(--osu-light-gray);
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid var(--osu-orange);
}

.info-card h3 {
    color: var(--osu-orange);
    margin-bottom: 1rem;
}

.info-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.info-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--osu-gray);
}

.info-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--qt-red);
    font-weight: bold;
}

.campus-section {
    margin: 3rem 0;
    background-color: var(--osu-light-gray);
    padding: 2rem;
    border-radius: 8px;
}

.campus-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
}

.campus-card {
    background-color: var(--osu-white);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.campus-card h4 {
    color: var(--osu-orange);
    margin-bottom: 1rem;
}

.campus-address {
    color: var(--osu-gray);
    font-weight: 500;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.campus-info {
    color: var(--osu-gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

footer {
    background-color: var(--osu-black);
    color: var(--osu-white);
    padding: 2rem 0;
    text-align: center;
    margin-top: 4rem;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.5rem;
    }
    
    .tagline {
        font-size: 0.95rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .header-logo {
        height: 60px;
    }
    
    .left-logo,
    .right-logo {
        display: none;
    }
    
    .header-text {
        width: 100%;
    }
    
    .tab-button {
        padding: 0.8rem 1rem;
        font-size: 0.9rem;
    }
    
    .content-grid,
    .programs-grid,
    .career-grid,
    .stories-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .benefits-list {
        grid-template-columns: 1fr;
    }
    
    .instructor-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .instructor-photo img {
        width: 150px;
        height: 150px;
    }
    
    .curriculum-grid {
        grid-template-columns: 1fr;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .campus-grid {
        grid-template-columns: 1fr;
    }
}

/* Download Section Styles */
.download-section {
    margin: 3rem 0;
    background-color: var(--osu-light-gray);
    padding: 2rem;
    border-radius: 8px;
}

.download-card {
    background-color: var(--osu-white);
    border: 2px solid var(--qt-red);
    border-radius: 8px;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-top: 1.5rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.download-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(218, 41, 28, 0.15);
}

.download-icon {
    font-size: 3rem;
    flex-shrink: 0;
}

.download-content {
    flex: 1;
}

.download-content h4 {
    color: var(--osu-orange);
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.download-content p {
    color: var(--osu-gray);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.download-button {
    display: inline-block;
    background-color: var(--qt-red);
    color: white;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.download-button:hover {
    background-color: var(--osu-orange);
    color: white;
    text-decoration: none;
}

@media (max-width: 768px) {
    .download-card {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .download-icon {
        font-size: 2.5rem;
    }
}