:root {
    --green-dark: #2d5016;
    --green: #4a7c28;
    --green-light: #8fbc5a;
    --brown: #8b6914;
    --brown-light: #d4a84b;
    --bg: #f5f2eb;
    --bg-card: #ffffff;
    --text: #333333;
    --text-muted: #777777;
    --border: #ddd5c8;
    --danger: #c0392b;
    --radius: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar */
.navbar {
    background: var(--green-dark);
    color: white;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    gap: 2rem;
    height: 56px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-brand {
    color: white;
    text-decoration: none;
    font-size: 1.3rem;
    font-weight: 700;
    white-space: nowrap;
}
.nav-links { display: flex; gap: 0.5rem; }
.nav-links a {
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius);
    transition: background 0.2s;
}
.nav-links a:hover { background: rgba(255,255,255,0.15); color: white; }

/* Container */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1rem;
    flex: 1;
}

/* Alerts */
.alert {
    padding: 0.8rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
}
.alert-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.alert-error { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin: 1.5rem 0;
}
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
}
.stat-number { font-size: 2.5rem; font-weight: 700; color: var(--green); }
.stat-label { color: var(--text-muted); font-size: 0.9rem; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius);
    text-decoration: none;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    transition: opacity 0.2s;
}
.btn:hover { opacity: 0.85; }
.btn-primary { background: var(--green); color: white; }
.btn-secondary { background: var(--border); color: var(--text); }
.btn-danger { background: var(--danger); color: white; }

.actions-row { display: flex; gap: 0.8rem; margin: 1.5rem 0; flex-wrap: wrap; }

/* Forms */
.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; font-weight: 600; margin-bottom: 0.3rem; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--green);
    box-shadow: 0 0 0 2px rgba(74,124,40,0.2);
}

/* Drop Zone */
.drop-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    position: relative;
}
.drop-zone:hover, .drop-zone.drag-over {
    border-color: var(--green);
    background: rgba(74,124,40,0.05);
}
.drop-zone input[type="file"] {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    opacity: 0;
    cursor: pointer;
}
.preview-img {
    max-width: 100%;
    max-height: 300px;
    margin-top: 1rem;
    border-radius: var(--radius);
}

/* Loading */
.loading {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem;
    color: var(--green);
    font-weight: 600;
}
.spinner {
    width: 24px; height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--green);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Analysis */
.analysis-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin: 1.5rem 0;
}
.analysis-photo img {
    width: 100%;
    border-radius: var(--radius);
}
.photo-meta {
    margin-top: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}
.result-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    margin-bottom: 0.8rem;
}
.result-card h3 {
    color: var(--green-dark);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

/* Analysis List */
.analysis-list { display: flex; flex-direction: column; gap: 0.8rem; }
.analysis-card {
    display: flex;
    gap: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.8rem;
    text-decoration: none;
    color: var(--text);
    transition: box-shadow 0.2s;
}
.analysis-card:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
.analysis-thumb {
    width: 100px;
    height: 80px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
}
.analysis-info p { margin-top: 0.2rem; font-size: 0.9rem; }

/* Table */
.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}
.table th, .table td { padding: 0.7rem 1rem; text-align: left; }
.table th { background: var(--green-dark); color: white; font-weight: 600; }
.table tbody tr { border-top: 1px solid var(--border); }
.clickable-row { cursor: pointer; }
.clickable-row:hover { background: rgba(74,124,40,0.05); }

/* Misc */
.text-muted { color: var(--text-muted); font-size: 0.85rem; }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.tree-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.5rem; }
.tree-actions { display: flex; gap: 0.5rem; }
.tree-info { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; margin: 1rem 0; }
.tree-info p { margin-bottom: 0.3rem; }
.empty-state { text-align: center; padding: 3rem; color: var(--text-muted); }
.pagination { display: flex; align-items: center; justify-content: center; gap: 1rem; margin-top: 1.5rem; }
.page-info { color: var(--text-muted); }
.footer { text-align: center; padding: 1.5rem; color: var(--text-muted); font-size: 0.85rem; margin-top: 2rem; }

h1 { color: var(--green-dark); margin-bottom: 0.5rem; }
h2 { color: var(--green-dark); margin: 1.5rem 0 0.8rem; }

/* Responsive */
@media (max-width: 768px) {
    .navbar { padding: 0 1rem; gap: 1rem; }
    .nav-links a { padding: 0.3rem 0.5rem; font-size: 0.85rem; }
    .stats-grid { grid-template-columns: 1fr; }
    .analysis-detail { grid-template-columns: 1fr; }
    .table { font-size: 0.85rem; }
    .table th, .table td { padding: 0.5rem; }
}

/* Result card colors */
.result-rezidba { border-left: 4px solid var(--green); }
.result-bolesti { border-left: 4px solid var(--danger); }
.result-zdravlje { border-left: 4px solid var(--brown-light); }
.result-savjeti { border-left: 4px solid #3498db; }
.result-text { line-height: 1.8; white-space: pre-wrap; }
.result-card h3 { font-size: 1.1rem; }