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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f7f9fc;
    color: #1f2937;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    display: block;
    width: 100%;
}

.container {
    width: min(1120px, 92%);
    margin: 0 auto;
}


/* =========================
   HEADER
========================= */

.site-header {
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    color: #0f766e;
    letter-spacing: -0.5px;
}

.navigation {
    display: flex;
    align-items: center;
    gap: 28px;
}

.navigation a {
    font-size: 15px;
    font-weight: 600;
    color: #374151;
    transition: color 0.2s ease;
}

.navigation a:hover {
    color: #0f766e;
}


/* =========================
   HERO
========================= */

.hero {
    background: linear-gradient(
        135deg,
        #e9f8f6 0%,
        #f5fbff 100%
    );
    padding: 90px 0;
    border-bottom: 1px solid #e5e7eb;
}

.hero-label {
    display: inline-block;
    margin-bottom: 16px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 1.2px;
    color: #0f766e;
}

.hero h1 {
    max-width: 760px;
    font-size: clamp(36px, 5vw, 58px);
    line-height: 1.1;
    letter-spacing: -1.5px;
    color: #111827;
    margin-bottom: 22px;
}

.hero p {
    max-width: 680px;
    font-size: 18px;
    color: #4b5563;
}


/* =========================
   POSTS
========================= */

.posts-section {
    padding: 75px 0;
}

.section-heading {
    margin-bottom: 35px;
}

.section-heading h2 {
    font-size: 32px;
    line-height: 1.2;
    color: #111827;
    margin-bottom: 8px;
}

.section-heading p {
    color: #6b7280;
    font-size: 16px;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}

.post-card {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 14px;
    overflow: hidden;
    transition:
        transform 0.25s ease,
        box-shadow 0.25s ease;
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(15, 23, 42, 0.10);
}

.post-card > a:first-child {
    display: block;
    overflow: hidden;
}

.post-card img {
    height: 220px;
    object-fit: cover;
    transition: transform 0.35s ease;
}

.post-card:hover img {
    transform: scale(1.04);
}

.post-content {
    padding: 24px;
}

.post-category {
    display: inline-block;
    margin-bottom: 10px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 1px;
    color: #0f766e;
}

.post-content h3 {
    font-size: 21px;
    line-height: 1.3;
    margin-bottom: 12px;
    color: #111827;
}

.post-content h3 a:hover {
    color: #0f766e;
}

.post-content p {
    color: #6b7280;
    font-size: 15px;
    margin-bottom: 20px;
}

.read-more {
    display: inline-block;
    color: #0f766e;
    font-size: 14px;
    font-weight: 700;
}

.read-more:hover {
    color: #115e59;
}


/* =========================
   ABOUT
========================= */

.about-section {
    background: #ffffff;
    border-top: 1px solid #e5e7eb;
    padding: 65px 0;
}

.about-section h2 {
    font-size: 30px;
    margin-bottom: 15px;
    color: #111827;
}

.about-section p {
    max-width: 800px;
    color: #5b6472;
    font-size: 16px;
    margin-bottom: 12px;
}


/* =========================
   FOOTER
========================= */

.site-footer {
    background: #111827;
    color: #d1d5db;
    padding-top: 45px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 40px;
    padding-bottom: 35px;
}

.footer-inner strong {
    color: #ffffff;
    font-size: 20px;
}

.footer-inner p {
    margin-top: 7px;
    color: #9ca3af;
    font-size: 14px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: flex-start;
}

.footer-links a {
    font-size: 14px;
    color: #d1d5db;
}

.footer-links a:hover {
    color: #ffffff;
}

.copyright {
    text-align: center;
    border-top: 1px solid #374151;
    padding: 20px 15px;
    font-size: 13px;
    color: #9ca3af;
}


/* =========================
   TABLET
========================= */

@media (max-width: 900px) {

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

    .hero {
        padding: 70px 0;
    }

}


/* =========================
   MOBILE
========================= */

@media (max-width: 640px) {

    .header-inner {
        min-height: 64px;
    }

    .logo {
        font-size: 20px;
    }

    .navigation {
        gap: 15px;
    }

    .navigation a {
        font-size: 13px;
    }

    .hero {
        padding: 60px 0;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 16px;
    }

    .posts-section {
        padding: 55px 0;
    }

    .section-heading h2 {
        font-size: 27px;
    }

    .posts-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .post-card img {
        height: 230px;
    }

    .footer-inner {
        flex-direction: column;
        gap: 25px;
    }

    .footer-links {
        gap: 15px;
    }

}
.video-card {
    position: relative;
    width: 100%;
    max-width: 820px;
    margin: 20px auto;
    cursor: pointer;
    overflow: hidden;
    border-radius: 12px;
}

.video-card video {
    display: block;
    width: 100%;
    height: auto;
}

.watch-overlay {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0,0,0,0.75);
    color: white;
    padding: 10px 18px;
    border-radius: 25px;
    font-weight: 700;
    font-size: 15px;
    pointer-events: none;
}