/* =========================
RESET & VARIABLES
========================= */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --dark-green: #174A38;
    --green: #3C8D62;
    --light-green: #DDF3E5;
    --yellow: #F6C945;
    --cream: #FAFBF5;
    --white: #FFFFFF;
    --text: #263238;
    --border-color: #cbd5e1;
}

html { scroll-behavior: smooth; }
body { font-family: 'Inter', sans-serif; background: var(--cream); color: var(--text); line-height: 1.7; }
a { text-decoration: none; }

/* =========================
NAVBAR
========================= */
nav {
    position: sticky; top: 0; z-index: 99; width: 100%; display: flex;
    justify-content: space-between; align-items: center; padding: 20px 7%;
    background: var(--white); border-bottom: 1px solid #f1f5f9; transition: box-shadow 0.3s ease;
}
.logo { font-size: 20px; font-weight: 700; color: var(--dark-green); letter-spacing: -0.5px; }
.menu { display: flex; gap: 30px; }
.menu a { color: #475569; font-size: 14px; font-weight: 500; transition: color 0.3s; }
.menu a:hover { color: var(--green); }

/* =========================
GENERAL
========================= */
section { padding: 100px 8%; }
.section-header { max-width: 850px; margin: 0 auto 60px; text-align: center; }
.section-header span { color: var(--green); font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; }
.section-header h2 { color: var(--dark-green); font-size: 36px; line-height: 1.3; margin: 12px 0; font-weight: 700; }
.section-header p { color: #64748b; font-size: 16px; }
.button {
    display: inline-block; background: var(--green); color: var(--white);
    padding: 14px 35px; border-radius: 30px; font-weight: 600; border: none;
    cursor: pointer; transition: all 0.3s; text-align: center;
}
.button:hover { background: var(--dark-green); transform: translateY(-2px); box-shadow: 0 10px 20px rgba(23,74,56,.15); }

/* =========================
HERO
========================= */
.hero { min-height: 90vh; display: flex; align-items: center; gap: 60px; padding-top: 60px; }
.hero-text { flex: 1; }
.badge {
    display: inline-block; background: var(--light-green); color: var(--dark-green);
    padding: 8px 18px; border-radius: 30px; font-size: 13px; font-weight: 600; margin-bottom: 20px;
}
.hero-text h1 { font-size: 52px; line-height: 1.15; color: var(--dark-green); font-weight: 700; letter-spacing: -1px; }
.hero-text p { margin: 25px 0; max-width: 550px; color: #475569; font-size: 17px; }
.hero-image { flex: 1; display: flex; justify-content: center; }
.hero-image img { width: 100%; max-width: 560px; border-radius: 35px; box-shadow: 0 25px 60px rgba(23,74,56,.12); object-fit: cover; }
.hero-stat { display: flex; gap: 20px; margin: 35px 0; }
.hero-stat div { background: var(--white); padding: 15px 25px; border-radius: 18px; box-shadow: 0 10px 25px rgba(0,0,0,.04); }
.hero-stat strong { display: block; color: var(--green); font-size: 24px; font-weight: 700; }
.hero-stat span { font-size: 13px; color: #64748b; font-weight: 500; }

/* =========================
RESEARCH & WORKFLOW
========================= */
.research-wrapper { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.research-item { background: var(--white); padding: 40px; border-radius: 25px; box-shadow: 0 15px 35px rgba(0,0,0,.03); transition: transform 0.3s; }
.research-item:hover { transform: translateY(-8px); }
.number { font-size: 60px; font-weight: 700; color: #f1f5f9; margin-bottom: 10px; line-height: 1; }
.research-item h3 { color: var(--dark-green); margin-bottom: 15px; font-size: 20px; }
.research-item p { color: #64748b; font-size: 15px; }

.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 25px; }
.step { background: var(--white); padding: 35px 25px; border-radius: 25px; border-top: 4px solid var(--green); transition: transform 0.3s; box-shadow: 0 10px 30px rgba(0,0,0,.02); }
.step:hover { transform: translateY(-8px); }
.step h3 { color: var(--green); font-size: 32px; font-weight: 700; opacity: 0.5; }
.step strong { display: block; color: var(--dark-green); margin: 15px 0 10px; font-size: 18px; }
.step p { color: #64748b; font-size: 14px; line-height: 1.6; }

/* =========================
RESULT & PUBLICATION
========================= */
.performance { display: grid; grid-template-columns: repeat(4, 1fr); gap: 25px; }
.performance-card { background: var(--dark-green); padding: 40px 20px; border-radius: 25px; text-align: center; color: var(--white); }
.performance-card h3 { color: var(--yellow); font-size: 40px; margin-bottom: 10px; }
.performance-card p { font-weight: 600; font-size: 16px; margin-bottom: 5px; }
.performance-card span { font-size: 13px; opacity: 0.8; }

.publication-card { max-width: 900px; margin: auto; background: var(--white); border-radius: 30px; padding: 45px; display: flex; justify-content: space-between; gap: 40px; box-shadow: 0 15px 35px rgba(0,0,0,.04); }
.publication-card h3 { color: var(--dark-green); font-size: 28px; margin-bottom: 15px; }
.publication-card p { color: #64748b; }
.document-list { min-width: 300px; }
.doc-item { background: #f8fafc; color: var(--dark-green); font-weight: 500; margin-bottom: 12px; padding: 15px 20px; border-radius: 12px; border: 1px solid #e2e8f0; }

/* =========================
TEAM SECTION (DISEIMBANGKAN)
========================= */
.team-grid { 
    display: grid; 
    grid-template-columns: repeat(5, 1fr); 
    gap: 25px; 
}

.member-card { 
    background: var(--white); 
    padding: 30px 20px; 
    text-align: center; 
    border-radius: 25px; 
    transition: transform 0.3s; 
    box-shadow: 0 10px 25px rgba(0,0,0,.03);
    display: flex;                  /* Mengubah card menjadi flex container */
    flex-direction: column;         /* Menyusun elemen secara vertikal */
    justify-content: space-between; /* Merenggangkan isi agar simetris */
    height: 100%;                   /* Memastikan tinggi card rata */
}

.member-card img { 
    width: 120px; 
    height: 120px; 
    object-fit: cover; 
    border-radius: 50%; 
    margin: 0 auto 20px auto; 
    background: #e2e8f0; 
}

.member-card h3 { 
    color: var(--dark-green); 
    font-size: 15px;                /* Ukuran font disesuaikan agar lebih proporsional */
    line-height: 1.4;               /* Jarak antar baris teks nama lebih longgar & rapi */
    margin-bottom: 15px; 
    flex-grow: 1;                   /* Membuat area nama fleksibel mengisi ruang tengah */
    display: flex;
    align-items: center;
    justify-content: center;
}

.member-card p { 
    color: #94a3b8; 
    font-size: 13px; 
    margin-top: auto;               /* Mengunci posisi "Tim Peneliti" agar selalu rata di bawah */
}

/* =========================
PROFESSIONAL UPLOAD FORM
========================= */
#system { background: var(--white); }
.upload-card { max-width: 650px; margin: 0 auto; background: var(--white); padding: 40px; border-radius: 24px; box-shadow: 0 20px 40px rgba(0,0,0,.06); border: 1px solid #f1f5f9; }
.dropzone-area { position: relative; border: 2px dashed var(--border-color); border-radius: 16px; padding: 50px 20px; text-align: center; background: #f8fafc; cursor: pointer; transition: all 0.3s ease; margin-bottom: 30px; }
.dropzone-area:hover { border-color: var(--green); background: #f0fdf4; }
.upload-icon { display: flex; justify-content: center; margin-bottom: 16px; }
.upload-icon svg { width: 48px; height: 48px; color: #94a3b8; }
.dropzone-area:hover .upload-icon svg { color: var(--green); }
.dropzone-content h3 { color: var(--dark-green); font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.dropzone-content p { color: #64748b; font-size: 14px; margin-bottom: 12px; }
.micro-copy { display: block; font-size: 12px; color: #94a3b8; font-weight: 500; }

input[type="file"] { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }

#preview-container img { max-width: 100%; max-height: 320px; border-radius: 12px; object-fit: contain; box-shadow: 0 10px 25px rgba(0,0,0,.08); }

.submit-btn { width: 100%; padding: 18px; font-size: 16px; border-radius: 16px; }
.submit-btn:disabled { background: #e2e8f0; color: #94a3b8; cursor: not-allowed; transform: none; box-shadow: none; }

/* =========================
FOOTER
========================= */
footer { background: var(--dark-green); color: #94a3b8; text-align: center; padding: 30px; font-size: 14px; }

/* =========================
RESPONSIVE
========================= */
@media(max-width: 1024px) {
    .research-wrapper, .timeline, .performance { grid-template-columns: 1fr 1fr; }
    .team-grid { grid-template-columns: repeat(3, 1fr); }
    .hero { flex-direction: column; text-align: center; padding-top: 40px; }
    .hero-stat { justify-content: center; }
}
@media(max-width: 768px) {
    .menu { display: none; }
    .publication-card { flex-direction: column; }
}
@media(max-width: 600px) {
    .research-wrapper, .timeline, .performance, .team-grid { grid-template-columns: 1fr; }
    .hero-stat { flex-direction: column; }
}