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

body {
    font-family: 'Inter', sans-serif;
    background-color: #f5f7fb;
    color: #1f2937;
    line-height: 1.7;
}

/* HERO SECTION */
.hero {
    background: linear-gradient(135deg, #1e3a5f, #274c77);
    color: white;
    padding: 100px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: "";
    position: absolute;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.35), rgba(120, 180, 255, 0.15), transparent 65%);
    top: -30px;
    right: -200px;
    opacity: 0.8;
    pointer-events: none;
    filter: blur(2px);
}

.hero-content {
    max-width: 800px;
    margin: auto;
}

.hero h1 {
    font-size: clamp(2.8rem, 5vw, 4.2rem);
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    font-weight: 700;
}

.subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.95;
}

.results-strip {
    display: flex;
    justify-content: center;
    gap: 30px;
    padding: 20px;
    font-weight: 600;
    color: #1e3a5f;
    background: white;
}

/* NAVIGATION (WHITE MODE) */
.nav {
    position: sticky;
    top: 0;
    width: 100%;
    padding: 12px 20px;
    z-index: 100;
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
}

.nav-inner {
    max-width: 1000px;
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 80px;
    width: auto;
    display: block;
}

.nav-contact {
    color: #1e3a5f;
    font-weight: 600;
}

.nav-contact:hover {
    color: #274c77;
    text-decoration: none;
}

/* BUTTON */
.contact-button {
    display: inline-block;
    background: white;
    color: #1e3a5f;
    padding: 14px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.25s ease;
}

.contact-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 1px 2px rgba(0,0,0,0.05), 0 10px 30px rgba(0,0,0,0.08);
}

/* MAIN CONTENT */
main {
    max-width: 1000px;
    margin: auto;
    padding: 40px 20px;
}

.card {
    background: white;
    padding: 35px;
    margin-bottom: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.card h2 {
    margin-bottom: 20px;
    color: #1e3a5f;
}

/* SUBJECT GRID */
.subject-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 15px;
}

.subject-item {
    background: #eef3f8;
    padding: 18px;
    border-radius: 10px;
    text-align: center;
    font-weight: 600;
    transition: 0.2s ease;
    cursor: default;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
}

.subject-item:hover {
    background: #e3ebf5;
    transform: translateY(-2px);
}

.course-code {
    font-size: 0.9rem;
    font-weight: 400;
    color: #4b5563;
}

/* RATES */
.rates-container {
    margin-bottom: 15px;
}

.rate {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 10px;
}

/* FAQ SECTION */
.faq-item {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e5e7eb;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-item h3 {
    margin-bottom: 10px;
    color: #274c77;
    font-size: 1.15rem;
}

.faq-item p, .faq-item ul {
    color: #374151;
}

.faq-item ul {
    margin-top: 10px;
    margin-left: 20px;
}

/* BIO CREDENTIALS */
.bio-credentials {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid #e5e7eb;
}

.bio-credentials h3 {
    color: #1e3a5f;
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
}

.bio-credentials ul {
    list-style-type: none;
    padding-left: 0;
}

.bio-credentials li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 12px;
    color: #374151;
}

.bio-credentials li::before {
    content: "•";
    position: absolute;
    left: 5px;
    color: #274c77;
    font-size: 1.4rem;
    top: -2px;
}

/* GLOBAL LINKS */
a {
    color: #1e3a5f;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.card a[href^="mailto:"] {
    font-weight: 600;
    color: #1e3a5f;
    transition: color 0.2s ease;
}

.card a[href^="mailto:"]:hover {
    text-decoration: none;
    color: #274c77;
}

/* MOBILE RESPONSIVENESS */
@media (max-width: 700px) {
    .hero h1 {
        font-size: 2.7rem;
    }
    .subtitle {
        font-size: 1.1rem;
    }
}

.footer {
    margin-top: 60px;
    background: #1f2937;
    color: white;
    text-align: center;
    padding: 40px 20px;
}

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

.footer h3 {
    margin-bottom: 12px;
    font-size: 1.4rem;
}

.footer p {
    margin: 10px 0;
    line-height: 1.6;
}

.footer a {
    color: #8fd3ff;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

.footer-copy {
    margin-top: 25px;
    font-size: 0.9rem;
    color: #cfd8dc;
}

.footer-links {
    margin: 20px 0;
}

.footer-links a {
    margin: 0 12px;
    color: white;
    text-decoration: none;
    font-weight: 600;
}

.footer-links a:hover {
    text-decoration: underline;
}