/* =================================== */
/*      UNIVERSAL BOX-SIZING RULE      */
/* =================================== */
*, *::before, *::after {
    box-sizing: border-box;
}

/* =================================== */
/*      CUSTOM PROPERTIES (VARIABLES)  */
/* =================================== */
:root {
    --bg-color: #121212;
    --primary-color: #1a1a1a;
    --secondary-color: #242424;
    --font-color: #e0e0e0;
    --accent-color: #4a90e2;
    --accent-hover-color: #357ABD;
}

/* =================================== */
/*      GENERAL BODY & TYPOGRAPHY      */
/* =================================== */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--font-color);
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-weight: 600;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* =================================== */
/*      HEADER AND NAVIGATION          */
/* =================================== */
header {
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: rgba(18, 18, 18, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--secondary-color);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #fff;
}

.nav-links {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--font-color);
    font-weight: 500;
    position: relative;
    padding-bottom: 5px;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

.hamburger { display: none; }

/* =================================== */
/*          HERO SECTION (HOME PAGE)   */
/* =================================== */
.hero {
    display: flex;
    align-items: center;
    min-height: 100vh;
    width: 100%;
    padding: 6rem 2rem 2rem 2rem;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.hero-text {
    flex: 1;
    max-width: 600px;
}

.greeting {
    font-size: 1.2rem;
    font-weight: 500;
    margin: 0;
}

.main-name {
    font-size: 4rem;
    color: #fff;
    margin: 0.5rem 0;
    line-height: 1.1;
}

.tagline {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--accent-color);
    margin: 0 0 1.5rem 0;
}

.hero-bio {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.hero-image {
    flex-shrink: 0;
    position: relative;
}

.hero-image img {
    width: 350px;
    height: 350px;
    object-fit: cover;
    border-radius: 50%;
    border: 5px solid var(--secondary-color);
    box-shadow: 0 0 30px rgba(74, 144, 226, 0.3);
}

.cta-buttons {
    display: flex;
    gap: 1rem;
}

.cta-button {
    padding: 0.8rem 1.8rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center; /* Ensures text is centered */
}

.cta-button.primary { background-color: var(--accent-color); color: #fff; }
.cta-button.primary:hover { background-color: var(--accent-hover-color); transform: translateY(-3px); }
.cta-button.secondary { background-color: transparent; color: var(--accent-color); border: 2px solid var(--accent-color); }
.cta-button.secondary:hover { background-color: var(--accent-color); color: #fff; transform: translateY(-3px); }


/* =================================== */
/*   GENERIC CONTENT SECTION & ANIMATION */
/* =================================== */
.content-section {
    max-width: 1100px;
    margin: 8rem auto 4rem auto;
    padding: 2rem;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 1rem;
}

.final-cta {
    text-align: center;
    margin: 4rem auto;
    padding: 2rem;
    background-color: var(--primary-color);
    border: 1px solid var(--secondary-color);
    border-radius: 12px;
    max-width: 1100px;
}

.final-cta p {
    max-width: 700px;
    margin: 0 auto 1.5rem auto;
    font-size: 1.1rem;
}

.animated {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animated.is-visible {
    opacity: 1;
    transform: translateY(0);
}


/* =================================== */
/*        ABOUT PAGE STYLES            */
/* =================================== */
.about-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem auto;
    font-size: 1.1rem;
    line-height: 1.7;
}

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

.role-card {
    background-color: var(--primary-color);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--secondary-color);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.role-card:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2); }
.role-icon { margin-bottom: 1rem; }
.role-icon img { width: 60px; height: auto; }
.role-card h3 { color: var(--accent-color); font-size: 1.5rem; margin-top: 0; margin-bottom: 1rem; }
.role-card p { font-size: 1rem; line-height: 1.6; color: var(--font-color); }


/* =================================== */
/*    SERVICES / PORTFOLIO STYLES      */
/* =================================== */
.services-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--primary-color);
    border: 1px solid var(--secondary-color);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2); }
.service-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }
.service-icon { width: 50px; height: 50px; }
.service-card h3 { margin: 0; color: #fff; font-size: 1.5rem; }

.service-list { list-style: none; padding-left: 0; margin: 0; flex-grow: 1; }
.service-list li { font-size: 1rem; line-height: 1.6; margin-bottom: 1rem; padding-left: 1.5rem; position: relative; }
.service-list li::before { content: '›'; position: absolute; left: 0; color: var(--accent-color); font-weight: bold; font-size: 1.5rem; line-height: 1; }

.more-content { display: none; }
.service-card.open .more-content { display: list-item; }

.read-more-btn {
    background: none; border: none; color: var(--accent-color); font-weight: 600; cursor: pointer;
    padding: 0.5rem 0; margin-top: 1rem; text-align: left; align-self: flex-start; font-size: 1rem;
}
.read-more-btn:hover { text-decoration: underline; }


/* =================================== */
/*      PROJECTS SECTION STYLES        */
/* =================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 4rem; /* Adds space below services */
}

.project-card {
    background-color: var(--primary-color);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--secondary-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2); }
.project-image { width: 100%; height: 200px; object-fit: cover; display: block; }
.project-content { padding: 1.5rem; display: flex; flex-direction: column; flex-grow: 1; }
.project-title { color: #fff; margin-top: 0; margin-bottom: 0.5rem; }
.project-description { font-size: 0.95rem; line-height: 1.6; flex-grow: 1; }

.project-tech { margin: 1rem 0; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.project-tech span { background-color: var(--secondary-color); color: var(--font-color); padding: 0.3rem 0.7rem; border-radius: 15px; font-size: 0.8rem; font-weight: 500; }

.project-links { margin-top: 1rem; display: flex; gap: 0.5rem; }
.project-links .cta-button.small { padding: 0.5rem 1rem; font-size: 0.9rem; }


/* =================================== */
/*        CONTACT PAGE STYLES          */
/* =================================== */
.contact-intro { text-align: center; max-width: 700px; margin: 0 auto 3rem auto; }

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    background-color: var(--primary-color);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--secondary-color);
}

.contact-info h3 { color: #fff; margin-top: 0; }
.info-item { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }
.info-item a { font-size: 1.1rem; color: var(--font-color); }
.info-item a:hover { color: var(--accent-color); }
.info-item img { width: 25px; height: 25px; }

.contact-form .form-group { margin-bottom: 1.5rem; }
.contact-form label { display: block; margin-bottom: 0.5rem; font-weight: 500; }

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.8rem;
    background-color: var(--secondary-color);
    border: 1px solid #333;
    border-radius: 8px;
    color: var(--font-color);
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
}

.contact-form textarea { resize: vertical; }
.contact-form .cta-button { width: 100%; border: none; cursor: pointer; }

.social-media-links { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--secondary-color); }
.social-media-links h4 { color: var(--font-color); font-weight: 500; margin-top: 0; margin-bottom: 1rem; }
.social-icons-list { display: flex; align-items: center; flex-wrap: wrap; gap: 1.5rem; }
.social-icons-list a { display: inline-block; }
.social-icons-list img { width: 30px; height: 30px; filter: grayscale(100%) brightness(1.5); transition: filter 0.3s ease, transform 0.3s ease; }
.social-icons-list a:hover img { filter: grayscale(0%) brightness(1); transform: scale(1.15); }


/* =================================== */
/*        TEACHING PAGE STYLES         */
/* =================================== */
.experience-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    background-color: var(--secondary-color);
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 4rem;
    text-align: left;
}

.experience-number { font-size: 5rem; font-weight: 700; color: var(--accent-color); line-height: 1; }
.experience-text { font-size: 1.5rem; font-weight: 500; color: #fff; line-height: 1.2; }

.resource-section { margin-bottom: 4rem; }
.resource-section-title { text-align: center; font-size: 2rem; color: #fff; margin-bottom: 2rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--secondary-color); }

.resource-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; }
.resource-card {
    background-color: var(--primary-color);
    border: 1px solid var(--secondary-color);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.resource-card:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2); }
.resource-icon { width: 50px; height: 50px; margin: 0 auto 1rem auto; }
.resource-card h4 { color: #fff; font-size: 1.3rem; margin-top: 0; margin-bottom: 0.5rem; }
.resource-card p { font-size: 1rem; line-height: 1.6; flex-grow: 1; margin-bottom: 0; }
.resource-card .cta-button { width: 100%; margin-top: 1.5rem; }


/* =================================== */
/*             FOOTER                  */
/* =================================== */
footer {
    text-align: center;
    padding: 2rem 1rem;
    border-top: 1px solid var(--secondary-color);
    font-size: 0.9rem;
}

#visitor-count { font-weight: bold; }


/* =================================== */
/*      MOBILE RESPONSIVE STYLES       */
/* =================================== */
@media (max-width: 900px) {
    .hero-container { flex-direction: column-reverse; text-align: center; gap: 2rem; }
    .hero-text { max-width: 100%; }
    .cta-buttons { justify-content: center; }
    .hero-image img { width: 250px; height: 250px; }
    .main-name { font-size: 3rem; }
    .contact-container { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .hamburger { display: flex; flex-direction: column; gap: 5px; cursor: pointer; z-index: 10; }
    .hamburger .line { width: 25px; height: 2px; background-color: white; }

    .nav-links {
        display: none; position: fixed; top: 0; right: -100%; width: 60%; height: 100vh;
        background: #181818; flex-direction: column; align-items: center;
        justify-content: center; transition: right 0.4s ease-in-out;
    }
    .nav-links.nav-active { right: 0; display: flex; }

    .cta-buttons { flex-direction: column; align-items: center; }
}

@media (max-width: 500px) {
    .experience-banner { flex-direction: column; text-align: center; gap: 0.5rem; }
    .experience-text { font-size: 1.2rem; }
}

/* Custom Icon for Grade Numbers */
.custom-grade-icon {
    width: 80px;
    height: 80px;
    background-color: #4a90e2; /* Same color as your other icons */
    color: #ffffff; /* White text */
    border-radius: 50%; /* This makes it a circle */
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    font-weight: bold;
    margin: 0 auto 15px auto; /* Centers the icon and adds space below */
}

/*
 *  STYLES FOR STUDENT NOTES PAGE
 */

.section-subtitle {
    text-align: center;
    margin-top: -20px;
    margin-bottom: 40px;
    color: #666;
    font-size: 1.1rem;
}

.grade-notes-section {
    margin-bottom: 40px;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
}

.grade-title {
    font-size: 1.8rem;
    color: #333;
    border-bottom: 2px solid #4a90e2; /* Accent color */
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.notes-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.notes-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    border-bottom: 1px solid #ddd;
    font-size: 1.1rem;
}

.notes-list li:last-child {
    border-bottom: none;
}

.notes-list li span {
    flex-grow: 1;
    color: #444;
}

/* Ensure download button styles are consistent */
.notes-list .cta-button {
    text-decoration: none;
    padding: 8px 15px;
    font-size: 0.9rem;
    white-space: nowrap; /* Prevents text from wrapping */
}