:root {
    --primary: #4901FA;
    --primary-hover: #0D0035;
    --bg-color: #f4f6f9;
    --card-bg: #ffffff;
    --text-color: #333;
    --border-color: #e0e0e0;
    --success: #10b981;
    --warning: #ef4444;
}

body { font-family: 'Satoshi', sans-serif; background-color: var(--bg-color); color: var(--text-color); margin: 0; padding: 20px; }
.app-container { max-width: 900px; margin: 0 auto; background-color: var(--card-bg); padding: 40px; border-radius: 16px; box-shadow: 0 10px 25px rgba(0,0,0,0.05); }

/* Header e Logo */
.header { text-align: center; margin-bottom: 30px; border-bottom: 1px solid var(--border-color); padding-bottom: 20px; }
.logo-placeholder { max-width: 500px; height: auto; margin-bottom: 10px; }
.header h2 { margin: 0; font-size: 1.2rem; color: #666; font-weight: 400; }

/* Controles */
.controls-wrapper { display: flex; gap: 20px; align-items: center; justify-content: space-between; flex-wrap: wrap; margin-bottom: 30px; }

.input-group { display: flex; flex-direction: column; }
.input-group label { font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; color: #555; text-transform: uppercase; letter-spacing: 0.5px; }
.input-styled { padding: 12px 15px; border: 1px solid var(--border-color); border-radius: 8px; font-size: 1rem; width: 100px; transition: border 0.3s; }
.input-styled:focus { border-color: var(--primary); outline: none; }

/* Upload Zone */
.upload-zone { flex-grow: 1; border: 2px dashed var(--border-color); border-radius: 8px; padding: 20px; text-align: center; cursor: pointer; transition: all 0.3s; background-color: #fafafa; }
.upload-zone:hover { border-color: var(--primary); background-color: #f0f4ff; }
.upload-zone.has-files { border-color: var(--success); background-color: #f0fdf4; border-style: solid; }
.upload-text { color: #666; font-weight: 500; }
.upload-text strong { color: var(--primary); }
#fileInput { display: none; }

/* Botões */
.actions { display: flex; gap: 15px; margin-top: 20px; justify-content: flex-end; }
.btn { padding: 12px 24px; border: none; border-radius: 8px; font-weight: 600; cursor: pointer; font-size: 0.95rem; transition: transform 0.2s, background 0.2s; display: inline-flex; align-items: center; gap: 8px; }
.btn-primary { background-color: var(--primary); color: white; }
.btn-primary:hover { background-color: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 4px 12px rgba(26, 35, 78, 0.2); }
.btn-primary:disabled { background-color: #cbd5e1; color: #64748b; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-download-sm { width: 100%; padding: 8px; background-color: white; border: 1px solid var(--border-color); color: var(--text-color); border-radius: 6px; font-size: 0.8rem; cursor: pointer; transition: all 0.2s; }
.btn-download-sm:hover { background-color: #f1f5f9; border-color: var(--primary); color: var(--primary); }

/* Grid e Cards */
#statusMsg { margin-top: 20px; padding: 10px; border-radius: 6px; font-size: 0.9rem; text-align: center; }
#preview-area { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 25px; margin-top: 30px; }
.img-card { background: white; border-radius: 12px; padding: 10px; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06); transition: transform 0.2s; display: flex; flex-direction: column; }
.img-card:hover { transform: translateY(-3px); box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1); }
.img-info { font-size: 0.8rem; color: #64748b; margin-bottom: 10px; text-align: center; }
.success-text { color: var(--success); font-weight: 700; }
.warning-text { color: var(--warning); font-weight: 700; }

/* Imagem e Hover */
.img-wrapper { height: 140px; display: flex; align-items: center; justify-content: center; margin-bottom: 10px; background-color: #f8fafc; border-radius: 8px; overflow: hidden; position: relative; cursor: pointer; }
.img-wrapper img { max-width: 100%; max-height: 100%; transition: filter 0.3s ease; }
.hover-icon { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); color: white; opacity: 0; transition: opacity 0.3s ease; pointer-events: none; background-color: rgba(0,0,0,0.5); padding: 10px; border-radius: 50%; }
.img-wrapper:hover img { filter: brightness(0.7); }
.img-wrapper:hover .hover-icon { opacity: 1; }

/* Modal Styles */
.modal-overlay { display: none; position: fixed; z-index: 9999; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.9); align-items: center; justify-content: center; padding: 20px; box-sizing: border-box; }
.modal-content { margin: auto; display: block; max-width: 95%; max-height: 95vh; border-radius: 8px; box-shadow: 0 0 20px rgba(0,0,0,0.5); object-fit: contain; }
.close-modal { position: absolute; top: 20px; right: 35px; color: #f1f1f1; font-size: 40px; font-weight: bold; transition: 0.3s; cursor: pointer; z-index: 10000; }
.close-modal:hover { color: #bbb; text-decoration: none; }