/* ===== COLLABORATION PAGE STYLES ===== */

.collab-page-wrapper {
    /* ===== BRAND / THEME VARIABLES ===== */
    --bg: #f8f9fa;
    --text: #212529;
    --text-light: #ffffff;
    --muted: #6c757d;
    --primary: #e53935;
    --primary-dark: #c62828;
    --secondary: #ff8a80;
    --dark-bg: #2c3e50;
    --outline: #dee2e6;
    --card: #ffffff;
    --shadow: 0 8px 25px rgba(0, 0, 0, .08);
    --radius: 12px;
    --light-red-bg: #fff0f0;
    --hero-blue-bg: #3a4a6e;
    --hero-yellow-btn: #fbc02d;
    --hero-form-text: #00224d;
    --hero-progress-bar: #339cff;
    --hero-progress-bg: #e6f2ff;
    --hero-submit-btn: #ebebeb;
    --hero-submit-text: #a0a0a0;

    font-family: 'Poppins', Inter, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

/* Clamp typography scoped to collab-page-wrapper */
.collab-page-wrapper h1 {
    font-size: clamp(3.2rem, 4vw + 1.6rem, 5.6rem);
    line-height: 1.2;
}

.collab-page-wrapper h2 {
    font-size: clamp(2.8rem, 2.5vw + 1.6rem, 4.4rem);
    line-height: 1.2;
}

.collab-page-wrapper h3 {
    font-size: clamp(2rem, 1.8vw + 1.28rem, 2.8rem);
    line-height: 1.2;
}

.collab-page-wrapper p,
.collab-page-wrapper li {
    font-size: clamp(1.44rem, 0.6vw + 1.12rem, 1.6rem);
}

.collab-page-wrapper img {
    max-width: 100%;
    height: auto;
    display: block;
}

.collab-page-wrapper section {
    padding: clamp(3.2rem, 5vw, 8rem) 0;
}

.collab-page-wrapper .container {
    max-width: 1200px;
}

/* ===== BRAND BUTTONS ===== */
.collab-page-wrapper .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    height: 48px;
    padding: 0 24px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 999px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    text-decoration: none;
    transition: all .2s ease;
    width: auto;
    min-width: 160px;
    text-align: center;
}

.collab-page-wrapper .btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(229, 57, 53, 0.25);
    color: #fff;
}

.collab-page-wrapper .btn.btn-alt {
    background: var(--secondary);
    color: var(--text);
}

.collab-page-wrapper .btn.btn-alt:hover {
    background: #ff756b;
    box-shadow: 0 10px 20px rgba(255, 138, 128, 0.25);
    color: var(--text);
}

.collab-page-wrapper .btn-yellow {
    background: var(--hero-yellow-btn);
    color: #000;
    font-weight: 700;
    font-size: 1.44rem;
    height: 50px;
    border-radius: 8px;
    padding: 0 3.2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    border: none;
    transition: all .2s ease;
}

.collab-page-wrapper .btn-yellow:hover {
    background: #fdd835;
    box-shadow: 0 4px 15px rgba(251, 192, 45, 0.3);
    color: #000;
}

.collab-page-wrapper .btn-share {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-light);
    width: 50px;
    height: 50px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all .2s ease;
}

.collab-page-wrapper .btn-share:hover {
    background: rgba(255, 255, 255, 0.4);
}

.collab-page-wrapper .btn-submit {
    width: 100%;
    height: 48px;
    background: var(--hero-submit-btn);
    color: var(--hero-submit-text);
    border: none;
    border-radius: 8px;
    font-size: 1.76rem;
    font-weight: 700;
    cursor: pointer;
    transition: all .2s ease;
    margin-bottom: 2.4rem;
}

.collab-page-wrapper .btn-submit:hover {
    background: #ddd;
}

@media (max-width: 600px) {
    .collab-page-wrapper .btn {
        width: 100%;
    }
}

/* ===== SECTION HEADING ===== */
.collab-page-wrapper .section-heading {
    text-align: center;
    margin-bottom: 6.4rem;
}

.collab-page-wrapper .section-heading h2 {
    font-size: 4.8rem;
    font-weight: 700;
    margin: 0 0 0.8rem;
}

.collab-page-wrapper .section-heading p {
    font-size: 1.76rem;
    color: var(--muted);
    max-width: 600px;
    margin: 0 auto;
}

.collab-page-wrapper .section-heading .highlight {
    color: var(--primary);
}

.collab-page-wrapper .section-heading.light-text h2,
.collab-page-wrapper .section-heading.light-text p {
    color: var(--text-light);
}

.collab-page-wrapper .section-heading.light-text .highlight {
    color: var(--secondary);
}

/* ===== HERO SECTION ===== */
.collab-page-wrapper .hero {
    position: relative;
    color: var(--text-light);
    min-height: 80vh;
    display: flex;
    align-items: center;
    padding: 6.4rem 0 9.6rem;
}

.collab-page-wrapper .hero-background {
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/collabmain.jpeg');
    background-size: cover;
    background-position: center;
    z-index: 1;
}

.collab-page-wrapper .hero .container {
    position: relative;
    z-index: 2;
}

.collab-page-wrapper .hero-content {
    position: relative;
    z-index: 2;
    max-width: 550px;
}

.collab-page-wrapper .hero-content h1 {
    font-size: 5.12rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.6rem;
    background-color: rgba(0, 0, 0, 0.5);
    padding: 1.6rem;
    border-radius: var(--radius);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.collab-page-wrapper .hero-content .sub {
    font-size: 1.92rem;
    margin-bottom: 3.2rem;
    opacity: 0.9;
}

.collab-page-wrapper .hero-content .btn {
    margin-top: 1.6rem;
    margin-right: 0.8rem;
}

.collab-page-wrapper .apply-hero-right {
    position: relative;
    z-index: 2;
}

@media (max-width: 768px) {
    .collab-page-wrapper .hero-content h1 {
        font-size: 4rem;
    }

    .collab-page-wrapper .hero-content {
        text-align: center;
    }
}

/* ===== APPLY HERO FORM CARD ===== */
.collab-page-wrapper .apply-hero-form-card {
    background: var(--card);
    color: var(--hero-form-text);
    border-radius: var(--radius);
    padding: 4rem 3.2rem;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.collab-page-wrapper .apply-hero-form-card h2 {
    text-align: center;
    font-size: 3.2rem;
    font-weight: 700;
    margin: 0 0 3.2rem;
}

.collab-page-wrapper .form-label {
    font-size: 1.44rem;
    font-weight: 600;
    color: var(--hero-form-text);
}

.collab-page-wrapper .form-label .required {
    color: var(--primary);
}

.collab-page-wrapper .form-control {
    height: 48px;
    font-size: 1.6rem;
    border: 1px solid var(--outline);
    border-radius: 8px;
    background: #fafafa;
}

.collab-page-wrapper .form-control::placeholder {
    color: #aaa;
}

.collab-page-wrapper .form-disclaimer {
    display: flex;
    gap: 1.2rem;
    align-items: flex-start;
    margin: 2.4rem 0;
}

.collab-page-wrapper .form-disclaimer input[type="checkbox"] {
    flex-shrink: 0;
    margin-top: 5px;
}

.collab-page-wrapper .form-disclaimer p {
    font-size: 1.2rem;
    color: var(--muted);
    line-height: 1.5;
    margin: 0;
}

.collab-page-wrapper .progress {
    height: 30px;
    background: var(--hero-progress-bg);
    border-radius: 999px;
}

.collab-page-wrapper .progress-bar {
    background: var(--hero-progress-bar);
    font-size: 1.28rem;
    font-weight: 600;
    background-image: linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
    background-size: 20px 20px;
}

.collab-page-wrapper .country-code-text {
    min-width: 80px;
    background: #fafafa;
    border-color: var(--outline);
    font-size: 1.6rem;
    height: 48px;
}

@media (max-width: 480px) {
    .collab-page-wrapper .apply-hero-form-card {
        padding: 3.2rem 2.4rem;
    }

    .collab-page-wrapper .apply-hero-form-card h2 {
        font-size: 2.8rem;
    }
}

/* ===== INFO BAR ===== */
.collab-page-wrapper .info-bar-section {
    padding: 3.2rem 0;
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 3;
    margin-top: -8rem;
    margin-bottom: 8rem;
}

.collab-page-wrapper .info-bar-item {
    padding: 0 2.4rem;
    border-right: 1px solid var(--outline);
    text-align: center;
}

.collab-page-wrapper .info-bar-item:last-child {
    border-right: none;
}

.collab-page-wrapper .info-bar-title {
    font-weight: 600;
    font-size: 1.76rem;
    margin: 0 0 0.8rem;
    color: var(--text);
}

.collab-page-wrapper .info-bar-text {
    font-size: 1.44rem;
    color: var(--muted);
    margin: 0;
}

@media (max-width: 768px) {
    .collab-page-wrapper .info-bar-section {
        display: none !important;
    }
}

/* ===== LEARNER STATS ===== */
.collab-page-wrapper .learner-stats {
    padding: 0 0 8rem;
    margin-top: -4.8rem;
    position: relative;
    z-index: 2;
}

@media (max-width: 768px) {
    .collab-page-wrapper .learner-stats {
        margin-top: 0;
        padding-top: 4.8rem;
    }
}

.collab-page-wrapper .stat-card {
    padding: 3.2rem;
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
    border: 2px solid;
    min-height: 150px;
}

.collab-page-wrapper .stat-card h3 {
    margin: 0 0 0.8rem;
    font-size: 3.52rem;
    font-weight: 700;
}

.collab-page-wrapper .stat-card p {
    margin: 0;
    font-size: 1.76rem;
}

.collab-page-wrapper .stat-card-emi {
    background: #f0fff8;
    border-color: #adebad;
    color: #005200;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.collab-page-wrapper .stat-card-emi .rupee-icon {
    position: absolute;
    right: 1.6rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 9.6rem;
    font-weight: 700;
    color: #d9f2d9;
    z-index: 1;
}

.collab-page-wrapper .stat-card-emi h3,
.collab-page-wrapper .stat-card-emi p {
    position: relative;
    z-index: 2;
}

.collab-page-wrapper .stat-card-learners {
    background: var(--hero-progress-bg);
    border-color: var(--hero-progress-bar);
    color: var(--hero-form-text);
    padding: 0;
}

.collab-page-wrapper .stat-card-learners .animation-wrapper {
    display: flex;
    width: 200%;
    height: 100%;
    transition: transform 0.4s ease-in-out;
    transform: translateX(0);
}

.collab-page-wrapper .stat-card-learners:hover .animation-wrapper {
    transform: translateX(-50%);
}

.collab-page-wrapper .stat-card-learners .stat-content {
    width: 50%;
    padding: 3.2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.collab-page-wrapper .stat-card-learners .stat-long p {
    font-size: 1.76rem;
    line-height: 1.6;
}

/* ===== FEATURE SPLIT ===== */
.collab-page-wrapper .feature-split {
    background: var(--bg);
    padding: clamp(4.8rem, 6vw, 9.6rem) 0;
}

.collab-page-wrapper .feature-split__list {
    display: grid;
    gap: 6.4rem;
    margin-top: 4.8rem;
    padding-top: 4.8rem;
}

.collab-page-wrapper .feature-split__item {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4.8rem;
    align-items: center;
}

.collab-page-wrapper .feature-split__item:nth-child(even) {
    grid-template-columns: 1fr 1.2fr;
}

.collab-page-wrapper .feature-split__item:nth-child(even) .feature-split__text {
    grid-column: 2;
}

.collab-page-wrapper .feature-split__item:nth-child(even) .feature-split__image {
    grid-column: 1;
    grid-row: 1;
}

.collab-page-wrapper .feature-split__icon {
    width: 60px;
    height: 60px;
    background: var(--light-red-bg);
    color: var(--primary);
    display: grid;
    place-items: center;
    border-radius: 50%;
    margin-bottom: 2.4rem;
}

.collab-page-wrapper .feature-split__icon svg {
    width: 30px;
    height: 30px;
}

.collab-page-wrapper .feature-split__text h3 {
    font-size: clamp(2.24rem, 2vw + 1.28rem, 2.88rem);
    margin: 0 0 1.6rem;
    color: var(--text);
}

.collab-page-wrapper .feature-split__text p {
    color: var(--muted);
    font-size: 1.6rem;
    line-height: 1.7;
    margin: 0;
}

.collab-page-wrapper .feature-split__image img {
    width: 80%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    object-fit: cover;
    aspect-ratio: 5/3.5;
}

@media (max-width: 768px) {
    .collab-page-wrapper .feature-split__item {
        grid-template-columns: 1fr !important;
        gap: 3.2rem;
    }

    .collab-page-wrapper .feature-split__item:nth-child(even) .feature-split__text,
    .collab-page-wrapper .feature-split__item .feature-split__text {
        grid-column: 1 !important;
        grid-row: 2 !important;
    }

    .collab-page-wrapper .feature-split__item:nth-child(even) .feature-split__image,
    .collab-page-wrapper .feature-split__item .feature-split__image {
        grid-column: 1 !important;
        grid-row: 1 !important;
    }
}

/* ===== PHILOSOPHY ===== */
.collab-page-wrapper .philosophy {
    padding: 8rem 0;
    background: #fff;
}

.collab-page-wrapper .philosophy-card {
    text-align: center;
    padding: 3.2rem;
    border: 1px solid var(--outline);
    border-radius: var(--radius);
    transition: all .2s ease;
    height: 100%;
}

.collab-page-wrapper .philosophy-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.collab-page-wrapper .philosophy-card .icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 2.4rem;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: grid;
    place-items: center;
}

.collab-page-wrapper .philosophy-card .icon svg {
    width: 32px;
    height: 32px;
}

.collab-page-wrapper .philosophy-card h3 {
    font-size: 2rem;
    margin-bottom: 0.8rem;
}

.collab-page-wrapper .philosophy-card p {
    color: var(--muted);
    margin: 0;
}

/* ===== PHILOSOPHY IMPACT ===== */
.collab-page-wrapper .philosophy-impact {
    padding: 8rem 0;
    background: var(--bg);
    text-align: center;
}

.collab-page-wrapper .philosophy-impact-content {
    max-width: 80rem;
    margin: 0 auto;
}

.collab-page-wrapper .philosophy-impact-content h2 {
    font-size: clamp(2.4rem, 2.5vw + 1.6rem, 3.6rem);
    margin-bottom: 2rem;
    font-weight: 700;
}

.collab-page-wrapper .philosophy-impact-content p {
    font-size: 1.76rem;
    color: var(--muted);
    line-height: 1.8;
    margin: 0;
}

/* ===== LEARNING ENVIRONMENT ===== */
.collab-page-wrapper .learning-env {
    padding: 8rem 0;
    background: var(--light-red-bg);
}

.collab-page-wrapper .env-layout-card {
    background: var(--card);
    padding: 4.8rem;
    border-radius: var(--radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
    border: 1px solid var(--outline);
}

.collab-page-wrapper .env-layout-card .accordion-item {
    border-left: none;
    border-right: none;
    border-top: none;
    border-bottom: 1px solid var(--outline);
    background: none;
    transition: all 0.3s ease;
}

.collab-page-wrapper .env-layout-card .accordion-item:last-child {
    border-bottom: none;
}

.collab-page-wrapper .env-layout-card .accordion-button {
    background: none;
    color: var(--text);
    font-size: 1.92rem;
    font-weight: 600;
    padding: 2.4rem 0.8rem;
    box-shadow: none;
    transition: all 0.2s ease;
}

.collab-page-wrapper .env-layout-card .accordion-button:focus {
    box-shadow: none;
}

.collab-page-wrapper .env-layout-card .accordion-button:not(.collapsed) {
    color: var(--primary);
    background: none;
    font-weight: 700;
}

.collab-page-wrapper .env-layout-card .accordion-button::after {
    filter: none;
}

.collab-page-wrapper .env-layout-card .accordion-button:not(.collapsed)::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23e53935'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.collab-page-wrapper .env-layout-card .accordion-body {
    color: #4a5568;
    font-size: 1.52rem;
    line-height: 1.8;
    padding: 0 0.8rem 2.4rem;
}

.collab-page-wrapper .env-accordion-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
    object-fit: cover;
    aspect-ratio: 4/3;
    transition: all 0.3s ease;
}

.collab-page-wrapper .env-accordion-image img:hover {
    transform: scale(1.02);
}

@media (max-width: 768px) {
    .collab-page-wrapper .env-layout-card {
        padding: 3.2rem;
    }
}

/* ===== ENV CTA ===== */
.collab-page-wrapper .env-cta {
    background: var(--dark-bg);
    color: var(--text-light);
    text-align: center;
    padding: 8rem 0;
}

.collab-page-wrapper .env-cta-content {
    max-width: 70rem;
    margin: 0 auto;
}

.collab-page-wrapper .env-cta-content h2 {
    font-size: clamp(2.4rem, 2.5vw + 1.6rem, 3.6rem);
    margin-bottom: 2rem;
    color: #fff;
    font-weight: 700;
}

.collab-page-wrapper .env-cta-content p {
    font-size: 1.6rem;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 3rem;
}

.collab-page-wrapper .env-cta-btn {
    background: var(--primary);
    color: #fff !important;
    font-size: 1.6rem;
    font-weight: 600;
    padding: 1.6rem 3.6rem;
    border-radius: var(--radius);
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
    border: none;
    box-shadow: 0 4px 15px rgba(229, 57, 53, 0.3);
}

.collab-page-wrapper .env-cta-btn:hover {
    background: #c62828;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(229, 57, 53, 0.4);
}

/* ===== KEY HIGHLIGHTS ===== */
.collab-page-wrapper .ks-highlights {
    padding: 8rem 0;
}

.collab-page-wrapper .ks-highlights__card {
    background: var(--card);
    border: 1px solid var(--outline);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2.4rem;
    display: flex;
    align-items: center;
    gap: 1.6rem;
    transition: all .2s ease;
}

.collab-page-wrapper .ks-highlights__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, .12);
}

.collab-page-wrapper .ks-highlights__icon {
    flex-shrink: 0;
    width: 54px;
    height: 54px;
    border-radius: 12px;
    background: var(--primary);
    display: grid;
    place-items: center;
    color: #fff;
}

.collab-page-wrapper .ks-highlights__icon svg {
    width: 26px;
    height: 26px;
}

.collab-page-wrapper .ks-highlights__text {
    margin: 0;
    font-size: 1.6rem;
    line-height: 1.5;
    font-weight: 600;
    color: var(--text);
}

/* ===== PROGRAMME HIGHLIGHTS ===== */
.collab-page-wrapper .programme-highlights {
    padding: 8rem 0;
    background: #fff;
}

.collab-page-wrapper .highlights-container {
    border: 1px solid var(--outline);
    border-radius: var(--radius);
    background: var(--card);
    padding: 1.6rem 0;
}

.collab-page-wrapper .highlight-card {
    padding: 2.4rem;
    border-left: 1px solid var(--outline);
}

.collab-page-wrapper .highlight-card:first-child {
    border-left: none;
}

.collab-page-wrapper .highlight-card h3 {
    font-size: 1.92rem;
    margin: 0 0 0.8rem;
}

.collab-page-wrapper .highlight-card p {
    font-size: 1.52rem;
    color: var(--muted);
    margin: 0;
    line-height: 1.7;
}

@media (max-width: 1024px) {
    .collab-page-wrapper .highlight-card {
        border-left: none !important;
    }
}

/* ===== CAREER POWER ===== */
.collab-page-wrapper .career-power {
    padding: 8rem 0;
}

.collab-page-wrapper .skills-column h3 {
    font-size: 3.2rem;
    margin-top: 0;
    margin-bottom: 3.2rem;
}

.collab-page-wrapper .skills-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 2.4rem;
}

.collab-page-wrapper .skill-item {
    position: relative;
    padding-left: 35px;
    font-size: 1.6rem;
    line-height: 1.5;
}

.collab-page-wrapper .skill-item::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--text-light);
    display: grid;
    place-items: center;
    font-weight: bold;
}

.collab-page-wrapper .career-card {
    background: var(--light-red-bg);
    padding: 3.2rem;
    border-radius: var(--radius);
}

.collab-page-wrapper .career-card h4 {
    font-size: 2rem;
    margin-top: 0;
    margin-bottom: 2.4rem;
}

.collab-page-wrapper .stat-number {
    font-size: 4rem;
    font-weight: 700;
    color: var(--primary);
    margin: 0;
}

.collab-page-wrapper .stat-desc {
    color: var(--muted);
    font-size: 1.44rem;
    margin-bottom: 3.2rem;
}

.collab-page-wrapper .job-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 1.2rem;
}

.collab-page-wrapper .job-item {
    font-size: 1.52rem;
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--outline);
}

.collab-page-wrapper .job-item:last-child {
    border-bottom: none;
}

/* ===== CURRICULUM TABS ===== */
.collab-page-wrapper .curriculum-section {
    padding: 8rem 0;
    background: var(--bg);
}

.collab-page-wrapper .pt-nav {
    border-bottom: 1px solid var(--outline);
    display: flex;
    flex-wrap: wrap;
    gap: 3.2rem;
}

.collab-page-wrapper .pt-nav .nav-link {
    appearance: none;
    border: 0;
    background: transparent;
    cursor: pointer;
    padding: 10px 0;
    font-size: 1.76rem;
    font-weight: 500;
    color: var(--muted);
    border-bottom: 3px solid transparent;
    border-radius: 0;
    transition: all .2s ease;
}

.collab-page-wrapper .pt-nav .nav-link:hover {
    color: var(--text);
    border-bottom-color: transparent;
    background: transparent;
}

.collab-page-wrapper .pt-nav .nav-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: transparent;
}

.collab-page-wrapper .pt-body {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 3.2rem;
    align-items: start;
    margin-top: 3.2rem;
}

.collab-page-wrapper .pt-topics {
    display: grid;
    gap: 14px;
}

.collab-page-wrapper .pt-topic {
    display: block;
    text-align: left;
    width: 100%;
    border: 1px solid var(--outline);
    border-radius: var(--radius);
    background: #fff;
    color: var(--text);
    padding: 1.6rem;
    font-size: 1.6rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .2s ease;
}

.collab-page-wrapper .pt-topic:hover {
    background: #e9ecef;
}

.collab-page-wrapper .pt-topic.is-active {
    color: var(--primary);
    background: #fff;
    border-color: var(--primary);
    box-shadow: 0 10px 24px rgba(0, 0, 0, .06);
}

.collab-page-wrapper .pt-detail h3 {
    margin: 0 0 1.6rem;
    font-size: 2.4rem;
    line-height: 1.3;
    font-weight: 600;
}

.collab-page-wrapper .pt-list {
    list-style: none;
    padding: 0;
    margin: 1.6rem 0 0;
    display: grid;
    gap: 1.6rem;
}

.collab-page-wrapper .pt-li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--text);
    font-size: 1.6rem;
}

.collab-page-wrapper .pt-bullet {
    margin-top: 4px;
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    border: 2px solid var(--primary);
    color: var(--primary);
    font-weight: 900;
    font-size: 12px;
    line-height: 1;
}

@media (max-width: 900px) {
    .collab-page-wrapper .pt-body {
        grid-template-columns: 1fr;
    }
}

/* ===== FACULTY ===== */
.collab-page-wrapper .fac-roster {
    padding: 8rem 0;
}

.collab-page-wrapper .fac-carousel-wrapper {
    position: relative;
}

.collab-page-wrapper .fac-roster__grid {
    display: flex;
    gap: 2.4rem;
    overflow-x: auto;
    padding-bottom: 2.4rem;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.collab-page-wrapper .fac-roster__grid::-webkit-scrollbar {
    display: none;
}

.collab-page-wrapper .fac-card {
    flex: 0 0 300px;
    scroll-snap-align: start;
    background: var(--card);
    border: 1px solid var(--outline);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all .2s ease;
}

.collab-page-wrapper .fac-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 12px 30px rgba(0, 0, 0, .12);
}

.collab-page-wrapper .fac-card__photo {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-bottom: 3px solid var(--secondary);
}

.collab-page-wrapper .fac-card__body {
    padding: 1.6rem;
    text-align: center;
}

.collab-page-wrapper .fac-card__name {
    margin: 0 0 4px;
    font-size: 2rem;
    font-weight: 600;
}

.collab-page-wrapper .fac-card__title {
    margin: 0 0 10px;
    font-size: 1.44rem;
    font-weight: 500;
    color: var(--primary);
}

/* ===== TESTIMONIALS ===== */
.collab-page-wrapper .testimonials {
    padding: 8rem 0;
    background: var(--dark-bg);
    color: var(--text-light);
}

.collab-page-wrapper .testimonial-card {
    background: #34495e;
    padding: 3.2rem;
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.collab-page-wrapper .testimonial-card .quote {
    font-size: 1.76rem;
    margin: 0 0 2.4rem;
    flex-grow: 1;
    font-style: italic;
    opacity: 0.9;
    border-left: 3px solid var(--secondary);
    padding-left: 1.6rem;
}

.collab-page-wrapper .student-info {
    display: flex;
    align-items: center;
    gap: 1.6rem;
}

.collab-page-wrapper .student-info img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.collab-page-wrapper .student-info .name {
    font-weight: 600;
    margin: 0;
}

.collab-page-wrapper .student-info .course {
    font-size: 1.44rem;
    opacity: 0.8;
    margin: 0;
}

/* ===== FEE SECTION ===== */
.collab-page-wrapper .psbFeeWrap {
    padding: 8rem 0;
}

.collab-page-wrapper .psbFeeCard {
    background: var(--card);
    border: 1px solid var(--outline);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 3.2rem;
    text-align: center;
    border-top: 5px solid var(--outline);
    display: flex;
    flex-direction: column;
    position: relative;
    height: 100%;
}

.collab-page-wrapper .psbFeeCard--popular {
    border-color: var(--primary);
    transform: scale(1.05);
}

@media (max-width: 1024px) {
    .collab-page-wrapper .psbFeeCard--popular {
        transform: scale(1.02);
    }
}

.collab-page-wrapper .popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--text-light);
    padding: 5px 15px;
    border-radius: 999px;
    font-size: 1.28rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.collab-page-wrapper .psbFeeCard h4 {
    font-weight: 600;
    font-size: 1.92rem;
    margin-top: 0;
}

.collab-page-wrapper .psbFeeCard .psbPrice {
    font-size: 3.52rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 2.4rem;
    line-height: 1.2;
}

.collab-page-wrapper .psbFeeCard .psbPrice small {
    font-size: 1.44rem;
    font-weight: 500;
    color: var(--muted);
}

.collab-page-wrapper .psbFeeCard p {
    font-size: 1.52rem;
    margin: 0 0 2.4rem;
}

.collab-page-wrapper .psbIncl {
    list-style: none;
    padding: 0;
    margin: 0 0 3.2rem;
    text-align: left;
    display: grid;
    gap: 1.2rem;
    flex-grow: 1;
}

.collab-page-wrapper .psbIncl li {
    position: relative;
    padding-left: 25px;
    font-size: 1.52rem;
}

.collab-page-wrapper .psbIncl li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.collab-page-wrapper .psbFeeCard .btn {
    width: 100%;
}

/* ===== HOW TO APPLY ===== */
.collab-page-wrapper .how-to-apply {
    padding: 8rem 0;
    background: #fff;
}

.collab-page-wrapper .apply-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2.4rem;
}

.collab-page-wrapper .apply-step .icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--light-red-bg);
    color: var(--primary);
    display: grid;
    place-items: center;
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 2.4rem;
    border: 2px solid var(--primary);
    position: relative;
}

.collab-page-wrapper .apply-step h3 {
    font-size: 2rem;
    margin-bottom: 0.8rem;
}

.collab-page-wrapper .apply-step p {
    color: var(--muted);
    margin: 0;
    max-width: 280px;
}

.collab-page-wrapper .how-to-apply .row {
    position: relative;
}

@media (min-width: 768px) {
    .collab-page-wrapper .apply-step:not(:last-child) .icon::after {
        content: '→';
        position: absolute;
        right: -9.6rem;
        top: 50%;
        transform: translateY(-50%);
        font-size: 3.2rem;
        color: var(--primary);
        font-weight: 300;
    }
}

@media (max-width: 767px) {
    .collab-page-wrapper .apply-step:not(:last-child) .icon::after {
        content: '↓';
        right: 50%;
        top: auto;
        bottom: -3.2rem;
        transform: translateX(50%);
    }
}

/* ===== FAQ ===== */
.collab-page-wrapper .faq-section-wrapper {
    padding: 8rem 0;
    background: var(--bg);
}

.collab-page-wrapper .faq-sidebar {
    position: sticky;
    top: 2rem;
}

.collab-page-wrapper .faq-sidebar .nav-link {
    background: #fff;
    color: var(--text);
    padding: 1.8rem 2.4rem;
    margin-bottom: 1.2rem;
    border-radius: 1rem;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.6rem;
    border: 1px solid var(--outline);
    transition: all .3s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
    text-decoration: none;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
}

.collab-page-wrapper .faq-sidebar .nav-link:hover {
    background: #fafafa;
    border-color: var(--primary);
    color: var(--primary);
    transform: translateX(5px);
}

.collab-page-wrapper .faq-sidebar .nav-link.active {
    background: var(--primary);
    color: #fff !important;
    border-color: var(--primary);
    box-shadow: 0 8px 20px rgba(229, 57, 53, 0.2);
}

.collab-page-wrapper .faq-accordion-wrapper .accordion-item {
    border: 1px solid var(--outline);
    border-radius: 1.2rem !important;
    margin-bottom: 1.6rem;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
    transition: all 0.3s ease;
}

.collab-page-wrapper .faq-accordion-wrapper .accordion-item:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
    border-color: rgba(229, 57, 53, 0.3);
}

.collab-page-wrapper .faq-accordion-wrapper .accordion-button {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text);
    background: #fff;
    padding: 2.2rem 2.6rem;
    border-radius: 1.2rem !important;
    border: none;
    transition: all 0.2s ease;
}

.collab-page-wrapper .faq-accordion-wrapper .accordion-button:focus {
    box-shadow: none;
}

.collab-page-wrapper .faq-accordion-wrapper .accordion-button:not(.collapsed) {
    color: var(--primary);
    background: #fff;
    box-shadow: none;
}

.collab-page-wrapper .faq-accordion-wrapper .accordion-button:not(.collapsed)::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23e53935'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.collab-page-wrapper .faq-accordion-wrapper .accordion-body {
    font-size: 1.52rem;
    color: #4a5568;
    line-height: 1.8;
    border-left: 4px solid var(--primary);
    margin-left: 2.6rem;
    padding: 0.5rem 2.6rem 2.2rem 2rem;
}

.collab-page-wrapper .faq-section-content {
    display: none;
}

.collab-page-wrapper .faq-section-content.active {
    display: block;
}

@media (max-width: 900px) {
    .collab-page-wrapper .faq-sidebar {
        position: static;
        margin-bottom: 3.2rem;
    }
    
    .collab-page-wrapper .faq-sidebar .nav-link {
        display: inline-block;
        margin-right: 1rem;
        margin-bottom: 1rem;
        padding: 1.2rem 2rem;
        font-size: 1.48rem;
    }
    
    .collab-page-wrapper .faq-sidebar .nav-link:hover {
        transform: none;
    }
}

/* ===== EXPLORE COURSES ===== */
.collab-page-wrapper .explore-courses {
    padding: 8rem 0;
}

.collab-page-wrapper .explore-courses-card {
    background: var(--card);
    padding: 4.8rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.collab-page-wrapper .course-preview-media {
    border-radius: var(--radius);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    min-height: 200px;
    background: #f0f0f0;
}

.collab-page-wrapper .course-preview-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.collab-page-wrapper .course-preview-media::after {
    content: '▶';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 4.8rem;
    color: #fff;
    background: rgba(0, 0, 0, 0.5);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    transition: all .2s ease;
}

.collab-page-wrapper .course-preview-media:hover::after {
    transform: translate(-50%, -50%) scale(1.1);
    background: rgba(229, 57, 53, 0.82);
}

.collab-page-wrapper .course-preview-text h3 {
    font-size: 3.2rem;
    margin-top: 0;
}

.collab-page-wrapper .course-preview-text p {
    color: var(--muted);
    margin-bottom: 3.2rem;
}

@media (max-width: 900px) {
    .collab-page-wrapper .explore-courses-card {
        text-align: center;
        padding: 3.2rem;
    }

    .collab-page-wrapper .course-preview-media {
        order: -1;
        width: 100%;
        min-height: 250px;
    }

    .collab-page-wrapper .course-preview-text .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .collab-page-wrapper .explore-courses-card {
        padding: 1.6rem 1.6rem 2.4rem;
    }

    .collab-page-wrapper .course-preview-media {
        min-height: 180px;
    }
}