/* style.css */
@import url('https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap');
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css');

:root {
    /* OPIT Palette */
    --opit-primary-blue: #0049FF;
    --opit-pink: #E94581;
    --opit-green: #63C872;
    --opit-yellow: #F6CA46;
    --opit-purple: #6934EA;
    --opit-orange: #E56D30;
    --opit-red: #E63724;
    --opit-black: #3C3C3C;

    /* Extended Theme Variables */
    --font-family-base: 'Poppins', sans-serif;
    --font-family-headings: 'Poppins', sans-serif;
    --text-dark: #212121;
    --text-medium: #424242;
    --text-light: #616161;
    --text-lighter: #9e9e9e;
    --bg-white: #ffffff;
    --bg-light: #f4f7f9;
    --bg-lighter: #f9fbfd;
    --shadow-base: 0 10px 30px rgba(0, 0, 0, 0.07);
    --shadow-medium: 0 15px 30px rgba(0, 0, 0, 0.1);
    --shadow-large: 0 20px 40px rgba(0, 0, 0, 0.15);
    --radius-small: 6px;
    --radius-base: 12px;
    --radius-large: 16px;
    --border-color: #e0e0e0;
    --border-color-light: #eeeeee;
    --transition-base: all 0.3s ease;
    --transition-fast: all 0.15s ease;
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 20px;
    --spacing-lg: 30px;
    --spacing-xl: 40px;
    --spacing-xxl: 50px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    background-color: #FFFFFF;
    color: var(--text-dark);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    font-size: 15px;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-family-headings);
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--opit-purple);
    text-decoration: underline;
}

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--opit-primary-blue);
}

.section-title-left {
    text-align: left;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--opit-primary-blue);
}

/* Banner */
.hero-banner {
    background-color: var(--opit-primary-blue);
    background-image: url('https://www.opit.com/wp-content/uploads/2023/12/Brand-Background.svg');
    background-position: center center;
    background-size: cover;
    color: white;
    border-radius: var(--radius-large);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.hero-banner-2 {
    background-color: var(--opit-primary-blue);
    background-image: url('https://www.opit.com/wp-content/uploads/2023/03/Hero-Background-Teaching-Model-min.jpg');
    background-position: center center;
    background-size: cover;
    color: white;
    border-radius: var(--radius-large);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.hero-title {
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.hero-subtitle {
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
}

.hero-content {
    position: relative;
    z-index: 2;
}

/* ── Hero Banner ── */
.summary-hero {
    background: linear-gradient(135deg, var(--opit-primary-blue) 0%, var(--opit-purple) 100%);
    border-radius: var(--radius-large);
    padding: var(--spacing-xl);
    color: white;
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.summary-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.summary-hero h1 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.summary-hero p {
    font-size: 1.1rem;
    opacity: 0.95;
    margin-bottom: 0;
    position: relative;
}

/* Course Meta */
.course-meta-container {
    display: flex;
    justify-content: center;
    width: 100%;
    margin-top: var(--spacing-md);
}

.course-meta {
    display: inline-flex;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 30px;
    backdrop-filter: blur(5px);
}

.meta-item.white-meta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: white;
    background-color: rgba(255, 255, 255, 0.15);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    transition: var(--transition-base);
}

.meta-item.white-meta:hover {
    background-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

/* Course Info Cards */
.course-info-section {
    margin: var(--spacing-xl) 0;
}

.course-info-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: 0 var(--spacing-md);
}

.course-info-card {
    background-color: var(--bg-white);
    border-radius: var(--radius-base);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-base);
    transition: var(--transition-base);
    border-top: 4px solid var(--opit-primary-blue);
    width: 100%;
}

.course-info-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.info-card-content {
    display: flex;
    flex-direction: column;
}

.info-card-title {
    margin-bottom: var(--spacing-md);
    color: var(--opit-black);
    position: relative;
    padding-bottom: var(--spacing-sm);
    font-size: 1.25rem;
    font-family: var(--font-family-headings);
    font-weight: 600;
}

.info-card-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--border-color);
}

.info-card-details {
    flex: 1;
}

.info-card-item {
    margin-bottom: var(--spacing-sm);
    display: block;
    font-size: 0.95rem;
    line-height: 1.5;
}

.info-card-label {
    font-weight: 600;
    color: var(--text-dark);
    display: inline;
}

/* Adjustments for medium and large screens */
@media (min-width: 769px) {
    .course-info-grid {
        max-width: 800px;
        margin: 0 auto;
    }
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .course-info-grid {
        padding: 0 var(--spacing-sm);
        gap: var(--spacing-sm);
    }

    .course-info-card {
        padding: var(--spacing-md);
    }

    .info-card-title {
        font-size: 1.1rem;
        margin-bottom: var(--spacing-sm);
    }

    .info-card-item {
        font-size: 0.9rem;
    }
}

/* Very small screens */
@media (max-width: 480px) {
    .course-info-grid {
        padding: 0 var(--spacing-xs);
    }

    .course-info-card {
        padding: var(--spacing-sm);
    }

    .info-card-title {
        font-size: 1rem;
    }

    .info-card-item {
        font-size: 0.85rem;
    }
}

/* Quick Links */
.quick-link-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.quick-link {
    background-color: var(--bg-white);
    color: var(--text-dark);
    text-decoration: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-small);
    border: 1px solid var(--border-color);
    flex-grow: 1;
    min-width: 100px;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.quick-link:hover {
    background-color: var(--opit-primary-blue);
    color: white;
    border-color: var(--opit-primary-blue);
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0, 73, 255, 0.2);
}

@media (max-width: 576px) {
    .quick-link-bar {
        grid-template-columns: 1fr;
    }
}

.section-block {
    margin-bottom: var(--spacing-md);
}

/* Accordion */
.accordion {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.accordion-item {
    background-color: var(--bg-white);
    border-radius: var(--radius-base);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: var(--transition-base);
}

details[open].accordion-item {
    border-color: var(--opit-primary-blue);
    box-shadow: var(--shadow-base);
}

.accordion-header {
    color: var(--text-dark);
    padding: var(--spacing-md);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    list-style: none;
}

.accordion-header::-webkit-details-marker {
    display: none;
}

.accordion-header::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--opit-primary-blue);
    transition: var(--transition-base);
}

details[open]>.accordion-header::after {
    transform: rotate(45deg);
}

.accordion-content {
    padding: 0 var(--spacing-md) var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

/* ── Milestone Timeline ── */
.milestone-list {
    display: flex;
    flex-direction: column;
    position: relative;
}

.milestone-list::before {
    content: '';
    position: absolute;
    top: 2.125rem;
    bottom: 2.125rem;
    left: 1.25rem;
    width: 2px;
    background-color: #e0e0e0;
    z-index: 1;
}

.milestone-row {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.milestone-stepper-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 2.5rem;
    flex-shrink: 0;
    position: relative;
}

.milestone-accordion-col {
    flex: 1;
    padding-bottom: 0.75rem;
}

.milestone-icon-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    background: var(--opit-primary-blue);
    color: #fff;
    flex-shrink: 0;
    font-size: 0.9rem;
    box-shadow: 0 4px 10px rgba(0, 73, 255, 0.2);
    z-index: 2;
    margin-top: 0.65rem;
}

.milestone-accordion-header {
    color: var(--text-dark);
    padding: 0.75rem 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    width: 100%;
    list-style: none;
    transition: var(--transition-base);
}

details[open]>.milestone-accordion-header {
    background: var(--opit-primary-blue);
    color: #fff;
}

details[open]>.milestone-accordion-header .step-badge {
    background: #fff;
    color: var(--opit-primary-blue);
}

.milestone-accordion-header::-webkit-details-marker {
    display: none;
}

.milestone-summary-right {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-shrink: 0;
    margin-left: auto;
}

.milestone-summary-right::after {
    content: '+';
    display: inline-block;
    font-size: 1.5rem;
    color: var(--opit-primary-blue);
    transition: transform var(--transition-base), color var(--transition-base), content var(--transition-base);
    line-height: 1;
    transform: rotate(0deg);
}

.milestone-row details[open] .milestone-summary-right::after {
    content: '-';
    color: #fff;
    transform: rotate(180deg);
}

/* Deadlines */
.deadline-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.deadline-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 8px 10px;
    background-color: var(--bg-white);
    border-radius: var(--radius-base);
    box-shadow: var(--shadow-base);
    margin-bottom: 8px;
}

.deadline-date {
    background-color: var(--opit-primary-blue);
    color: white;
    padding: 4px 8px;
    border-radius: var(--radius-small);
    min-width: 60px;
    text-align: center;
    height: fit-content;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.deadline-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.deadline-content h3 {
    margin-bottom: 2px;
    color: var(--text-dark);
    font-size: 0.9rem;
    line-height: 1.2;
}

.deadline-content p {
    color: var(--text-light);
    font-size: 0.8rem;
    margin-bottom: 0;
    line-height: 1.2;
}

/* Footer */
.site-footer {
    background-color: var(--text-dark);
    color: #e0e0e0;
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
    border-radius: 1rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-column {
    margin-bottom: var(--spacing-md);
}

.footer-column h4 {
    margin-bottom: var(--spacing-md);
    color: white;
}

.footer-column p,
.footer-column li {
    margin-bottom: var(--spacing-sm);
    color: #bdbdbd;
}

.footer-column ul {
    list-style: none;
}

.footer-column a {
    text-decoration: none;
    color: #bdbdbd;
    transition: var(--transition-base);
}

.footer-column a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid #424242;
    padding-top: var(--spacing-md);
    color: #9e9e9e;
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .course-info-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .course-meta {
        flex-wrap: wrap;
        justify-content: center;
    }

    .quick-link {
        min-width: 100%;
    }

    /* Footer responsiveness */
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-column {
        text-align: center;
        margin-bottom: var(--spacing-md);
    }

    .footer-column ul {
        padding-left: 0;
        text-align: center;
    }
}

@media (max-width: 576px) {
    .hero-banner {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

/* Poppins font classes */
.poppins-thin {
    font-family: "Poppins", sans-serif;
    font-weight: 100;
    font-style: normal;
}

.poppins-extralight {
    font-family: "Poppins", sans-serif;
    font-weight: 200;
    font-style: normal;
}

.poppins-light {
    font-family: "Poppins", sans-serif;
    font-weight: 300;
    font-style: normal;
}

.poppins-regular {
    font-family: "Poppins", sans-serif;
    font-weight: 400;
    font-style: normal;
}

.poppins-medium {
    font-family: "Poppins", sans-serif;
    font-weight: 500;
    font-style: normal;
}

.poppins-semibold {
    font-family: "Poppins", sans-serif;
    font-weight: 600;
    font-style: normal;
}

.poppins-bold {
    font-family: "Poppins", sans-serif;
    font-weight: 700;
    font-style: normal;
}

.poppins-extrabold {
    font-family: "Poppins", sans-serif;
    font-weight: 800;
    font-style: normal;
}

.poppins-black {
    font-family: "Poppins", sans-serif;
    font-weight: 900;
    font-style: normal;
}

.poppins-thin-italic {
    font-family: "Poppins", sans-serif;
    font-weight: 100;
    font-style: italic;
}

.poppins-extralight-italic {
    font-family: "Poppins", sans-serif;
    font-weight: 200;
    font-style: italic;
}

.poppins-light-italic {
    font-family: "Poppins", sans-serif;
    font-weight: 300;
    font-style: italic;
}

.poppins-regular-italic {
    font-family: "Poppins", sans-serif;
    font-weight: 400;
    font-style: italic;
}

.poppins-medium-italic {
    font-family: "Poppins", sans-serif;
    font-weight: 500;
    font-style: italic;
}

.poppins-semibold-italic {
    font-family: "Poppins", sans-serif;
    font-weight: 600;
    font-style: italic;
}

.poppins-bold-italic {
    font-family: "Poppins", sans-serif;
    font-weight: 700;
    font-style: italic;
}

.poppins-extrabold-italic {
    font-family: "Poppins", sans-serif;
    font-weight: 800;
    font-style: italic;
}

.poppins-black-italic {
    font-family: "Poppins", sans-serif;
    font-weight: 900;
    font-style: italic;
}

/* Font size utilities */
.text-xs {
    font-size: 0.5rem;
}

.text-sm {
    font-size: 0.75rem;
}

.text-base {
    font-size: 1rem;
}

.text-lg {
    font-size: 1.1rem;
}

.text-xl {
    font-size: 1.25rem;
}

.text-2xl {
    font-size: 1.5rem;
}

.text-3xl {
    font-size: 1.75rem;
}

.text-4xl {
    font-size: 2rem;
}

.text-5xl {
    font-size: 2.25rem;
}

.text-6xl {
    font-size: 2.5rem;
}

/* Responsive font sizes */
@media (max-width: 768px) {
    .md\:text-4xl {
        font-size: 2rem;
    }

    .md\:text-lg {
        font-size: 1.2rem;
    }
}

@media (max-width: 576px) {
    .sm\:text-3xl {
        font-size: 1.8rem;
    }

    .sm\:text-base {
        font-size: 1rem;
    }
}

.ig-title,
.title,
.item_link {
    font-family: "Poppins", sans-serif;
    font-weight: 550;
}

.ig-info {
    font-family: "Poppins", sans-serif;
    font-weight: 550;
}

.ig-details {
    font-family: "Poppins", sans-serif;
    font-weight: 400;
    font-style: normal;
}

.ig-info .title.locked_title {
    font-family: "Poppins", sans-serif;
    font-weight: 650;
}

#grading-box-extended {
    width: 100%;
    font-family: 'Poppins', sans-serif;
    font-size: 14px;
    transition: all 0.3s ease;
}

#sub_header_title {
    width: 100%;
    padding: 14px 16px;
    font-family: 'Poppins', sans-serif;
    font-size: 14px;
    transition: all 0.3s ease;
}

#content_tag_create_url {
    width: 100%;
    padding: 14px 16px;
    font-family: 'Poppins', sans-serif;
    font-size: 14px;
    transition: all 0.3s ease;
}

#content_tag_create_title {
    width: 100%;
    padding: 14px 16px;
    font-family: 'Poppins', sans-serif;
    font-size: 14px;
    transition: all 0.3s ease;
}

/* Hero nav buttons */
.hero-nav-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: var(--spacing-md);
}

.hero-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 0.82rem;
    color: #fff;
    background: rgba(255, 255, 255, 0.18);
    border: 1.5px solid rgba(255, 255, 255, 0.45);
    border-radius: 30px;
    padding: 0.42rem 1.1rem;
    text-decoration: none;
    transition: all 0.25s ease;
    backdrop-filter: blur(4px);
    white-space: nowrap;
    cursor: pointer;
}

.hero-nav-btn:hover {
    background: rgba(255, 255, 255, 0.35);
    border-color: rgba(255, 255, 255, 0.8);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
    color: #fff;
    text-decoration: none;
}

.quick-link-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.quick-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.quick-link i {
    font-size: 0.95rem;
    color: var(--opit-primary-blue);
}

.quick-link:hover i {
    color: white;
}

/* Collapsible section (details/summary)*/
.collapsible-section {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-large);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-base);
    transition: var(--transition-base);
}

.collapsible-section:hover {
    box-shadow: var(--shadow-medium);
}

.collapsible-section>details>summary {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    cursor: pointer;
    list-style: none;
    user-select: none;
    background: linear-gradient(135deg, #000000 0%, #3C3C3C 100%);
    color: #fff;
    outline: none;
    transition: background 0.25s ease;
}

.collapsible-section>details>summary::-webkit-details-marker {
    display: none;
}

.collapsible-section>details>summary:hover {
    background: linear-gradient(135deg, #000000 0%, #3C3C3C 100%);
}

.cs-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.cs-title {
    flex: 1;
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 1rem;
}

.cs-badge {
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    font-size: 0.72rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 0.15rem 0.65rem;
    flex-shrink: 0;
}

.cs-chevron {
    font-size: 0.85rem;
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 0.25rem;
}

.collapsible-section>details[open]>summary .cs-chevron {
    transform: rotate(180deg);
}

.cs-body {
    background: var(--bg-lighter);
    padding: 1.25rem 1.25rem 0.5rem;
}

/* Premium Meeting Grid */
.meeting-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.meeting-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color-light);
    border-top: 5px solid var(--opit-primary-blue);
    border-radius: var(--radius-base);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
    height: 100%;
}

.meeting-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
    border-top-color: var(--opit-purple);
}

.meeting-card h4 {
    color: var(--opit-black);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.meeting-card h4 i {
    color: var(--opit-primary-blue);
    font-size: 1.1rem;
}

.meeting-card p {
    color: var(--text-medium);
    font-size: 0.85rem;
    line-height: 1.5;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.meeting-footer {
    padding-top: 1rem;
}

/* Pop-ups / Modals (CSS Only) */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    z-index: 9999;
    transition: all 0.3s ease;
}

.modal-overlay:target {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-white);
    width: 90%;
    max-width: 500px;
    border-radius: var(--radius-large);
    padding: var(--spacing-lg);
    position: relative;
    transform: translateY(-20px);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-large);
}

.modal-overlay:target .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    color: var(--text-light);
    font-size: 1.5rem;
    text-decoration: none;
    line-height: 1;
}

.modal-close:hover {
    color: var(--opit-red);
    text-decoration: none;
}

.btn-outline {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
    padding: 10px 15px;
    background-color: var(--bg-white);
    color: var(--text-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-small);
    text-align: center;
    font-family: var(--font-family-base);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-base);
}

.btn-outline:hover {
    background-color: var(--opit-primary-blue);
    color: white;
    border-color: var(--opit-primary-blue);
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
    text-decoration: none;
}

/* Collapsible */
.collapsible-section {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-large);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-base);
    transition: var(--transition-base);
}

.collapsible-section:hover {
    box-shadow: var(--shadow-medium);
}

.collapsible-section>details>summary {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    cursor: pointer;
    list-style: none;
    user-select: none;
    background: linear-gradient(135deg, #000000 0%, #3C3C3C 100%);
    color: #fff;
    outline: none;
    transition: background 0.25s ease;
}

.collapsible-section>details>summary::-webkit-details-marker {
    display: none;
}

.cs-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.cs-title {
    flex: 1;
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 1rem;
}

.cs-badge {
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    font-size: 0.72rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 0.15rem 0.65rem;
    flex-shrink: 0;
}

.cs-chevron {
    font-size: 0.85rem;
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 0.25rem;
}

.collapsible-section>details[open]>summary .cs-chevron {
    transform: rotate(180deg);
}

.cs-body {
    background: var(--bg-lighter);
    padding: 1.25rem 1.25rem 0.5rem;
}

/* Milestone List Layout */
.milestone-list {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    margin-bottom: 0.25rem;
}

.milestone-card {
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    overflow: hidden;
    font-family: 'Poppins', sans-serif;
    background: #fff;
}

.milestone-header {
    background: linear-gradient(135deg, var(--opit-primary-blue), #2563eb);
    color: #fff;
    padding: 0.55rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.milestone-header-title {
    font-size: 0.78rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.step-label {
    font-size: 0.7rem;
    font-weight: 400;
}

.milestone-body {
    padding: 0.85rem 1rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.milestone-desc {
    font-size: 0.82rem;
    color: #1e293b;
    line-height: 1.55;
    flex: 1;
    min-width: 200px;
}

.milestone-desc p {
    margin: 0;
    font-weight: 600;
}

.milestone-desc small {
    display: block;
    margin-top: 3px;
    color: #64748b;
    font-weight: 400;
    font-size: 0.75rem;
}

.milestone-action {
    flex-shrink: 0;
    text-align: right;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 0.8rem;
    text-decoration: none;
    border-radius: 8px;
    padding: 0.45rem 1rem;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    white-space: nowrap;
    cursor: pointer;
    border: none;
}

.action-btn-green {
    color: #fff;
    background: linear-gradient(135deg, #43b35a, #2d9e45);
    box-shadow: 0 4px 14px rgba(99, 200, 114, 0.30);
}

.action-btn-green:hover {
    background: linear-gradient(135deg, #2d9e45, #1e7a33);
    transform: translateY(-2px) scale(1.04);
    box-shadow: 0 8px 22px rgba(99, 200, 114, 0.42);
    color: #fff;
    text-decoration: none;
}

/* Milestone Accordion UX */
.milestone-accordion {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 950px;
    margin: 0 auto;
}

.milestone-collapse {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.milestone-collapse[open] {
    border-color: var(--opit-primary-blue);
    box-shadow: var(--shadow-base);
}

/* Hide default marker in Canvas/Webkit */
.milestone-collapse>summary {
    list-style: none;
}

.milestone-collapse>summary::-webkit-details-marker {
    display: none;
}

.milestone-summary {
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    user-select: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: var(--radius-lg);
}

.milestone-summary:hover {
    background-color: var(--bg-lighter);
}

.summary-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.step-badge {
    background: var(--opit-black);
    color: var(--bg-light);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    border: 1px solid var(--border-color);
}

.milestone-collapse[open] .step-badge {
    background: var(--opit-primary-blue);
    color: white;
    border-color: var(--opit-primary-blue);
}

.summary-title {
    font-family: var(--font-family-base);
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--opit-black);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.summary-title i {
    color: var(--opit-primary-blue);
    font-size: 1.2rem;
}

.summary-chevron i {
    color: var(--text-medium);
    transition: transform 0.3s ease;
}

.milestone-collapse[open] .summary-chevron i {
    transform: rotate(180deg);
    color: var(--opit-primary-blue);
}

.milestone-content {
    padding: 0 1.5rem 1.5rem 1.5rem;
}

@media (max-width: 600px) {
    .summary-left {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

/* Footer link items */
.footer-column a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.2s ease;
}

.footer-column a:hover {
    color: #fff;
    transform: translateX(3px);
    text-decoration: none;
}

/* Milestone table */
.ms-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 0.85rem;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    overflow: hidden;
    font-family: 'Poppins', sans-serif;
    box-shadow: var(--shadow-base);
    background: var(--bg-white);
}

.ms-header-row th {
    background: linear-gradient(135deg, var(--opit-primary-blue), #2563eb);
    color: #fff;
    padding: 0.85rem 1rem;
    font-size: 0.8rem;
    font-weight: 600;
    text-align: left;
    letter-spacing: 0.3px;
}

.ms-header-inner {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ms-step-label {
    margin-left: auto;
    font-size: 0.7rem;
    font-weight: 400;
    opacity: 1;
}

.ms-body-row td {
    background: #fff;
    border-top: 1px solid #e2e8f0;
    padding: 0.85rem 1rem;
    vertical-align: middle;
}

.ms-body-row td.ms-desc {
    font-size: 0.82rem;
    color: #1e293b;
    line-height: 1.55;
}

.ms-body-row td.ms-desc p {
    margin: 0;
    font-weight: 600;
}

.ms-body-row td.ms-desc small {
    display: block;
    margin-top: 3px;
    color: #64748b;
    font-weight: 400;
    font-size: 0.75rem;
}

.ms-body-row td.ms-action {
    text-align: right;
    white-space: nowrap;
    width: 1%;
}

/* ── Section Label ── */
.section-label {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--opit-primary-blue);
    margin-bottom: 0.35rem;
}

/* Section Heading (left-aligned with gradient underline) */
.section-heading {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--opit-black);
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
    line-height: 1.3;
}

.section-heading::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 48px;
    height: 4px;
    background: linear-gradient(90deg, var(--opit-primary-blue), var(--opit-purple));
    border-radius: 4px;
}

/* ── Premium Table Upgrade ── */
.ms-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-base);
    background: var(--bg-white);
}

/* Header */
.ms-header-row th {
    background: linear-gradient(135deg, var(--opit-primary-blue), #2563eb);
    color: #fff;
    padding: 0.85rem 1rem;
    font-size: 0.8rem;
    font-weight: 600;
    text-align: left;
    letter-spacing: 0.3px;
}

/* Body rows */
.ms-body-row td {
    padding: 0.9rem 1rem;
    border-top: 1px solid var(--border-color-light);
    font-size: 0.85rem;
    color: var(--text-medium);
    vertical-align: middle;
}

/* Zebra striping */
.ms-body-row:nth-child(even) td {
    background-color: var(--bg-lighter);
}

/* Hover effect */
.ms-body-row:hover td {
    background-color: #f0f4ff;
    transition: var(--transition-fast);
}

/* Course column highlight */
.ms-desc p {
    font-weight: 600;
    color: var(--opit-black);
}

/* Code badge */
.code-badge {
    color: var(--opit-primary-blue);
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.75rem;
    display: inline-block;
}

/* ECTS highlight */
.ects {
    font-weight: 700;
    color: var(--opit-primary-blue);
}

/* Center numeric columns */
.center {
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .ms-table thead {
        display: none;
    }

    .ms-table tr {
        display: block;
        margin-bottom: 1rem;
        border: 1px solid var(--border-color);
        border-radius: 10px;
        overflow: hidden;
    }

    .ms-table td {
        display: flex;
        justify-content: space-between;
        padding: 0.75rem 1rem;
        border-top: none;
        border-bottom: 1px solid var(--border-color-light);
    }

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

    .ms-table td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--text-dark);
    }
}

/* ── Objectives Grid ── */
.objectives-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 0.5rem;
}

.obj-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-base);
    padding: 0.75rem 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.7rem;
    transition: var(--transition-base);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.obj-card p:last-child {
    margin-bottom: 0;
    margin-top: 0;
}

.obj-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    border-color: var(--border-color);
}

.obj-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.obj-icon.red {
    background: #fdecec;
    color: var(--opit-red);
}


.obj-icon.black {
    background: #e0e0e0;
    color: var(--opit-black);
}

.obj-icon.blue {
    background: #EBF0FF;
    color: var(--opit-primary-blue);
}

.obj-icon.pink {
    background: #FFF0F0;
    color: var(--opit-pink);
}

.obj-icon.purple {
    background: #F0EAFF;
    color: var(--opit-purple);
}

.obj-icon.green {
    background: #EAFAF0;
    color: #2d9e45;
}

.obj-icon.orange {
    background: #FFF3EC;
    color: var(--opit-orange);
}

.obj-body h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--opit-black);
    margin-bottom: 0.25rem;
}

.obj-body p {
    font-size: 0.82rem;
    color: var(--text-light);
    margin: 0;
    line-height: 1.55;
}

/* ── Resource Cards Grid ── */
.resource-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.resource-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color-light);
    border-top: 5px solid var(--opit-primary-blue);
    border-radius: var(--radius-base);
    padding: 1.5rem 1.25rem 1.25rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    text-decoration: none;
    color: var(--text-dark);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.resource-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-medium);
    border-top-color: var(--opit-purple);
    color: var(--text-dark);
    text-decoration: none;
}

.resource-card .rc-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: #EBF0FF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--opit-primary-blue);
    margin-bottom: 0.9rem;
    transition: var(--transition-base);
}

.resource-card:hover .rc-icon {
    background: var(--opit-primary-blue);
    color: white;
}

.resource-card h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--opit-black);
    margin-bottom: 0.35rem;
}

.resource-card p {
    font-size: 0.78rem;
    color: var(--text-lighter);
    margin: 0;
    line-height: 1.5;
}

/* Resource card color variants */
.resource-card:nth-child(2) {
    border-top-color: var(--opit-purple);
}

.resource-card:nth-child(2) .rc-icon {
    background: #F0EAFF;
    color: var(--opit-purple);
}

.resource-card:nth-child(2):hover .rc-icon {
    background: var(--opit-purple);
    color: white;
}

.resource-card:nth-child(3) {
    border-top-color: #2d9e45;
}

.resource-card:nth-child(3) .rc-icon {
    background: #EAFAF0;
    color: #2d9e45;
}

.resource-card:nth-child(3):hover .rc-icon {
    background: #2d9e45;
    color: white;
}

.resource-card:nth-child(4) {
    border-top-color: var(--opit-orange);
}

.resource-card:nth-child(4) .rc-icon {
    background: #FFF3EC;
    color: var(--opit-orange);
}

.resource-card:nth-child(4):hover .rc-icon {
    background: var(--opit-orange);
    color: white;
}

.resource-card:nth-child(5) {
    border-top-color: var(--opit-pink);
}

.resource-card:nth-child(5) .rc-icon {
    background: #FDEAF2;
    color: var(--opit-pink);
}

.resource-card:nth-child(5):hover .rc-icon {
    background: var(--opit-pink);
    color: white;
}

.resource-card:nth-child(6) {
    border-top-color: var(--opit-yellow);
}

.resource-card:nth-child(6) .rc-icon {
    background: #FFFBEB;
    color: #C4970A;
}

.resource-card:nth-child(6):hover .rc-icon {
    background: #C4970A;
    color: white;
}

/* ── Contact Banner ── */
.contact-banner {
    background: linear-gradient(135deg, #f0f4ff 0%, #fafbff 100%);
    border: 1px solid #dce6ff;
    border-radius: var(--radius-base);
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.contact-banner .cb-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--opit-primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-banner .cb-text p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-medium);
}

.contact-banner .cb-text strong {
    color: var(--opit-black);
}

/* ── Responsive: New Components ── */
@media (max-width: 992px) {
    .resource-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .objectives-grid {
        grid-template-columns: 1fr;
    }

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

    .contact-banner {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 576px) {
    .resource-grid {
        grid-template-columns: 1fr;
    }
}

/* ── Module Steps Timeline ── */
.module-steps {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: relative;
    margin-top: 1rem;
}

.module-steps::before {
    content: '';
    position: absolute;
    left: 22px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color-light);
}

.step {
    display: flex;
    gap: 1rem;
    align-items: center;
    position: relative;
}

.step-number {
    width: 44px;
    height: 44px;
    min-width: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--opit-primary-blue), var(--opit-purple));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    z-index: 1;
    box-shadow: 0 4px 12px rgba(0, 73, 255, 0.25);
}

.step-content {
    background: var(--bg-white);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius-base);
    padding: 1rem 1.25rem;
    flex: 1;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.step-text {
    flex: 1;
}

.step-content:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}

.step-content h3 {
    margin: 0 0 0.3rem;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--opit-primary-blue);
}

.step-content p {
    font-size: 0.82rem;
    color: var(--text-light);
    margin-bottom: 0;
    line-height: 1.55;
}

.step-content .action-btn {
    white-space: nowrap;
    flex-shrink: 0;
}

@media (max-width: 576px) {
    .step-content {
        padding: 0.85rem 1rem;
    }

    .step-number {
        width: 36px;
        height: 36px;
        min-width: 36px;
        font-size: 0.85rem;
    }

    .module-steps::before {
        left: 18px;
    }
}

/* Hide Font Awesome icon when using quick-link-icon-container */
.quick-link-icon-container i.fas {
    display: none !important;
}

.footer-column i.fas {
    display: none !important;
}