/* ============================================
   INDEX PAGE IMPROVEMENTS
   Better spacing, layout, and mobile responsiveness
   ============================================ */

/* Hero/Intro Section Improvements */
#intro {
    padding: clamp(25px, 5vw, 50px) 0 clamp(30px, 6vw, 55px);
}

.intro-heading {
    text-align: center;
    margin-bottom: clamp(20px, 4vw, 40px);
}

.main-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    line-height: 1.2;
    margin-bottom: clamp(20px, 4vw, 30px);
    font-weight: 800;
    color: var(--primary-100);
}

.intro-logo {
    display: block;
    margin: clamp(20px, 4vw, 35px) auto clamp(20px, 4vw, 30px);
    max-width: clamp(250px, 45vw, 380px);
    width: 85%;
    height: auto;
    filter: drop-shadow(0 4px 12px rgba(255, 122, 0, 0.15));
    transition: transform 0.3s ease;
}

.intro-logo:hover {
    transform: scale(1.02);
}

.subtitle {
    font-size: clamp(1.0625rem, 2.2vw, 1.375rem);
    font-weight: 600;
    color: var(--text-300);
    text-align: center;
    margin: 0 auto clamp(15px, 3vw, 25px);
    max-width: 900px;
    line-height: 1.4;
}

.intro-content {
    max-width: 1200px;
    margin: 0 auto;
}

.intro-highlight {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(20px, 4vw, 32px);
    margin-bottom: clamp(35px, 6vw, 50px);
    padding: 0 clamp(16px, 3vw, 24px);
}

.highlight-item {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.98) 0%,
        rgba(255, 252, 250, 0.98) 100%);
    padding: clamp(28px, 5vw, 40px);
    border-radius: clamp(14px, 2.5vw, 20px);
    border: 2px solid rgba(255, 122, 0, 0.15);
    box-shadow: 0 6px 20px rgba(255, 122, 0, 0.1);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    text-align: center;
}

.highlight-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(255, 122, 0, 0.2);
    border-color: rgba(255, 122, 0, 0.3);
}

.highlight-text {
    width: 100%;
}

.highlight-text h3 {
    font-size: clamp(1.1rem, 2.2vw, 1.4rem);
    color: var(--primary-100);
    font-weight: 700;
    margin: 0 0 clamp(12px, 2.5vw, 16px);
    line-height: 1.3;
}

.highlight-text p {
    font-size: clamp(0.9rem, 1.75vw, 1rem);
    color: var(--text-200);
    margin: 0;
    line-height: 1.65;
    text-align: center;
}

.intro-text {
    font-size: clamp(0.9375rem, 1.8vw, 1.0625rem);
    line-height: 1.7;
    text-align: justify;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 clamp(16px, 3vw, 24px);
    color: var(--text-200);
}

/* Mission Section Improvements */
#mission {
    padding: clamp(30px, 5vw, 55px) 0;
}

#mission h2 {
    text-align: center;
    font-size: clamp(1.625rem, 3.2vw, 2.25rem);
    margin-bottom: clamp(25px, 5vw, 40px);
    color: var(--primary-100);
    font-weight: 800;
    line-height: 1.3;
}

.mission-content {
    max-width: 1000px;
    margin: 0 auto;
}

.mission-content p {
    font-size: clamp(0.9375rem, 1.8vw, 1.0625rem);
    line-height: 1.7;
    margin-bottom: clamp(20px, 4vw, 30px);
    text-align: justify;
}

.mission-content ol {
    list-style-position: outside;
    padding-left: clamp(24px, 4vw, 40px);
    margin: clamp(20px, 4vw, 35px) 0;
}

.mission-content li {
    font-size: clamp(0.9rem, 1.8vw, 1.0rem);
    line-height: 1.7;
    margin-bottom: clamp(16px, 3vw, 25px);
    color: var(--text-200);
}

.mission-content li strong {
    color: var(--primary-100);
    font-weight: 700;
    font-size: clamp(0.95rem, 1.9vw, 1.075rem);
    display: block;
    margin-bottom: clamp(6px, 1.2vw, 10px);
}

.mission-content li span {
    display: block;
    padding-left: clamp(0px, 2vw, 20px);
}

/* Two-Column Promo Sections */
#education-promo,
#tools-promo {
    padding: clamp(30px, 5vw, 55px) 0;
}

.two-column-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(30px, 6vw, 80px);
    align-items: center;
    margin: 0;
}

/* Three-Column Content Section */
#content-promo {
    padding: clamp(30px, 5vw, 55px) 0;
}

#content-promo .container {
    max-width: 1400px;
}

.three-column-layout {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(20px, 3.5vw, 36px);
    margin: 0;
}

.content-card {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.95) 0%,
        rgba(255, 250, 245, 0.95) 100%);
    padding: clamp(32px, 5.5vw, 45px);
    border-radius: clamp(16px, 2.5vw, 24px);
    border: 2px solid rgba(255, 122, 0, 0.15);
    box-shadow: 0 6px 20px rgba(255, 122, 0, 0.1);
    transition: all 0.3s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 340px;
}

.content-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 35px rgba(255, 122, 0, 0.25);
    border-color: rgba(255, 122, 0, 0.35);
}

.content-card h3 {
    font-size: clamp(1.35rem, 2.4vw, 1.75rem);
    margin: 0 0 clamp(16px, 3vw, 22px);
    color: var(--primary-100);
    font-weight: 800;
    line-height: 1.3;
}

.content-card p {
    font-size: clamp(0.95rem, 1.85vw, 1.05rem);
    line-height: 1.75;
    color: var(--text-200);
    margin-bottom: clamp(20px, 4vw, 26px);
    flex-grow: 1;
    text-align: left;
}

.content-card .btn {
    margin-top: auto;
    width: 250px;
    padding: clamp(14px, 2.6vw, 18px) clamp(28px, 4.5vw, 42px);
    margin-left: auto;
    margin-right: auto;
    font-size: clamp(1.05rem, 2vw, 1.2rem);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 700;
}

.column img {
    width: 100%;
    height: auto;
    border-radius: clamp(12px, 2vw, 20px);
    object-fit: cover;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.column img:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(255, 122, 0, 0.2);
}

.column-right,
.column-left {
    padding: clamp(16px, 3vw, 32px);
}

.column-right h2,
.column-left h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    margin: 0 0 clamp(15px, 3vw, 25px);
    color: var(--primary-100);
    font-weight: 800;
    line-height: 1.3;
}

.column-right p,
.column-left p {
    font-size: clamp(1rem, 2vw, 1.0625rem);
    line-height: 1.8;
    margin-bottom: clamp(20px, 4vw, 30px);
    text-align: left;
}

.column-right .subtitle,
.column-left .subtitle {
    text-align: left;
    margin: 0 0 clamp(15px, 3vw, 20px);
    font-size: clamp(1.125rem, 2.2vw, 1.4rem) !important;
}

/* Personnel Section - Tighter Spacing */
#personnel-promo {
    padding: clamp(30px, 5vw, 55px) 0;
    text-align: center;
}

#personnel-promo h2 {
    font-size: clamp(1.625rem, 3.2vw, 2.25rem);
    margin-bottom: clamp(25px, 4.5vw, 38px);
    color: var(--primary-100);
    font-weight: 800;
}

.personnel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: clamp(18px, 3vw, 26px);
    margin-bottom: clamp(25px, 4.5vw, 35px);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.personnel-grid .card {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.95) 0%,
        rgba(255, 250, 245, 0.95) 100%);
    padding: clamp(18px, 3vw, 24px);
    border-radius: clamp(14px, 2vw, 18px);
    border: 2px solid rgba(255, 122, 0, 0.15);
    box-shadow: 0 6px 20px rgba(255, 122, 0, 0.1);
    transition: all 0.3s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.personnel-grid .card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(255, 122, 0, 0.2);
    border-color: rgba(255, 122, 0, 0.3);
}

.personnel-grid .card img {
    width: clamp(100px, 20vw, 145px);
    height: clamp(100px, 20vw, 145px);
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-100);
    margin-bottom: clamp(10px, 2vw, 14px);
    transition: transform 0.3s ease;
}

.personnel-grid .card:hover img {
    transform: scale(1.05);
}

.personnel-grid .card h3 {
    font-size: clamp(0.95rem, 1.8vw, 1.125rem);
    margin: clamp(5px, 1vw, 8px) 0;
    color: var(--text-100);
    font-weight: 700;
    line-height: 1.3;
}

.personnel-grid .card h4 {
    font-size: clamp(0.825rem, 1.6vw, 0.95rem);
    margin: clamp(3px, 0.7vw, 5px) 0;
    color: var(--text-200);
    font-weight: 500;
    font-style: italic;
    line-height: 1.3;
}

.personnel-grid .card .title-th {
    font-size: clamp(0.85rem, 1.65vw, 0.975rem);
    color: var(--text-300);
    margin: clamp(7px, 1.4vw, 10px) 0 clamp(3px, 0.7vw, 4px);
    font-weight: 600;
    line-height: 1.4;
}

.personnel-grid .card .title-en {
    font-size: clamp(0.8rem, 1.5vw, 0.925rem);
    color: var(--text-300);
    margin: 0 0 clamp(8px, 1.7vw, 12px);
    font-weight: 400;
    font-style: italic;
    line-height: 1.4;
}

.personnel-grid .card .email {
    font-size: clamp(0.8rem, 1.5vw, 0.925rem);
    color: var(--primary-100);
    font-weight: 600;
    margin: clamp(5px, 1vw, 8px) 0 0;
    word-break: break-all;
}

/* Button Improvements */
.btn,
a.btn {
    display: inline-block;
    padding: clamp(11px, 2.2vw, 14px) clamp(28px, 4.5vw, 42px);
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-size: clamp(0.95rem, 1.9vw, 1.075rem);
    font-weight: 700;
    box-shadow: 0 6px 20px rgba(255, 122, 0, 0.3);
    transition: all 0.3s ease;
    margin-top: clamp(12px, 2.5vw, 20px);
    text-align: center;
}

.btn:hover,
a.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 122, 0, 0.4);
}

/* Footer Improvements */
footer {
    padding: clamp(25px, 4.5vw, 42px) 0;
    background-color: var(--primary-100);
    color: white;
    text-align: center;
}

footer p {
    margin: 0;
    font-size: clamp(0.875rem, 1.65vw, 0.975rem);
}

/* Mobile-Specific Improvements */
@media (max-width: 768px) {
    #intro {
        padding: 22px 0 26px;
    }

    #mission,
    #education-promo,
    #tools-promo,
    #content-promo,
    #personnel-promo {
        padding: 30px 0;
    }

    .intro-highlight {
        grid-template-columns: 1fr;
        gap: 18px;
        margin-bottom: 30px;
        padding: 0;
    }

    .highlight-item {
        padding: 20px;
    }

    .intro-text {
        text-align: left;
    }

    .two-column-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .three-column-layout {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .content-card {
        min-height: auto;
        padding: clamp(20px, 4vw, 30px);
    }

    .column-right,
    .column-left {
        padding: 0;
    }

    .column-right .subtitle,
    .column-left .subtitle {
        text-align: center;
    }

    .column-right p,
    .column-left p {
        text-align: left;
    }

    .mission-content p,
    .intro-text {
        text-align: left;
    }

    .mission-content li span {
        padding-left: 0;
    }

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

    .personnel-grid .card {
        max-width: 380px;
        margin: 0 auto;
        padding: clamp(16px, 3vw, 22px);
    }
}

@media (max-width: 480px) {
    #intro {
        padding: 18px 0 22px;
    }

    #mission,
    #education-promo,
    #tools-promo,
    #content-promo,
    #personnel-promo {
        padding: 26px 0;
    }

    .three-column-layout {
        gap: 18px;
    }

    footer {
        padding: 22px 0;
    }

    .intro-heading {
        margin-bottom: 18px;
    }

    .main-title {
        line-height: 1.3;
    }

    .intro-logo {
        max-width: 200px;
    }

    .mission-content ol {
        padding-left: 20px;
    }

    .mission-content li {
        margin-bottom: 16px;
    }

    .personnel-grid .card {
        padding: 16px;
    }

    .personnel-grid {
        gap: 18px;
    }

    .btn,
    a.btn {
        width: 100%;
        max-width: 320px;
        display: block;
        margin-left: auto;
        margin-right: auto;
    }
}

/* Prevent text from being too small on any device */
@media (max-width: 360px) {
    :root {
        --font-size-base: 0.9375rem !important;
    }

    .main-title {
        font-size: 1.5rem !important;
    }

    .personnel-grid .card img {
        width: 100px !important;
        height: 100px !important;
    }
}