:root {
    --bg: #f0f2f5;
    --card: #ffffff;
    --primary: #1a56db;
    --primary-light: #e8effc;
    --primary-hover: #1347b8;
    --accent: #0ea5e9;
    --text: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --border-focus: #93b4f5;
    --success: #059669;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.08);
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', -apple-system, sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 30px 20px 60px;
}

.app-container {
    width: 100%;
    max-width: 960px;
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ─── HEADER ─── */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.logo h1 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text);
}
.logo h1 span {
    color: var(--primary);
    font-weight: 500;
    font-size: 1rem;
    margin-left: 4px;
}
.subtitle {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 2px;
}

.client-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
    font-size: 0.8rem;
    padding: 8px 16px;
    border-radius: 50px;
}
.badge-dot {
    width: 8px; height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ─── TABS ─── */
.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    background: var(--card);
    padding: 6px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.tab-btn {
    flex: 1;
    min-width: 120px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: 'Inter', sans-serif;
    font-size: 0.78rem;
    font-weight: 500;
    padding: 10px 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}
.tab-btn:hover {
    background: var(--bg);
    color: var(--text);
}
.tab-btn.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(26, 86, 219, 0.3);
}

/* ─── CONTENT SECTIONS ─── */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}
.tab-content.active { display: block; }

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.section-header {
    margin-bottom: 28px;
}
.section-header h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text);
}
.section-header p {
    color: var(--text-muted);
    font-size: 0.88rem;
    margin-top: 4px;
}

h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary-light);
}

.section-divider {
    height: 1px;
    background: var(--border);
    margin: 32px 0;
}

/* ─── FORM GRID / FIELDS ─── */
form {
    background: var(--card);
    padding: 36px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.form-grid {
    display: grid;
    gap: 16px;
    margin-bottom: 20px;
}
.form-grid.two-col   { grid-template-columns: 1fr 1fr; }
.form-grid.three-col { grid-template-columns: 1fr 1fr 1fr; }

.field {
    margin-bottom: 16px;
}

label {
    display: block;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

input[type="text"],
input[type="date"],
select,
textarea {
    width: 100%;
    background: #f8fafc;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    padding: 12px 14px;
    color: var(--text);
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}
textarea {
    resize: vertical;
    min-height: 80px;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--border-focus);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
}

input::placeholder, textarea::placeholder {
    color: var(--text-muted);
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

/* ─── UPLOAD AREA ─── */
.upload-area {
    border: 2px dashed var(--border);
    padding: 40px;
    text-align: center;
    border-radius: var(--radius);
    background: #f8fafc;
    transition: all 0.3s;
    cursor: pointer;
}
.upload-area:hover, .upload-area.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
}
.upload-icon { font-size: 2.5rem; margin-bottom: 10px; }
.upload-area p { font-weight: 600; color: var(--text); margin-bottom: 4px; }
.upload-area span { font-size: 0.85rem; color: var(--text-muted); }
.upload-area a { color: var(--primary); text-decoration: none; font-weight: 600; }

.file-list {
    list-style: none;
    margin: 12px 0;
}
.file-list li {
    background: var(--primary-light);
    color: var(--primary);
    padding: 10px 14px;
    border-radius: 6px;
    margin-bottom: 4px;
    font-size: 0.85rem;
    font-weight: 500;
}

.btn-upload {
    width: 100%;
    padding: 12px;
    background: var(--bg);
    border: 1.5px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 8px;
}
.btn-upload:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
}

/* ─── CHECKLIST ─── */
.checklist {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}
.check-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--text);
    text-transform: none;
    letter-spacing: 0;
    padding: 8px 0;
    cursor: pointer;
}
.check-item input[type="checkbox"] {
    width: 16px; height: 16px;
    accent-color: var(--primary);
    cursor: pointer;
}

/* ─── EMPRESA BLOCK ─── */
.empresa-block {
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 8px;
}
.empresa-block h3 {
    margin-top: 0;
}

/* ─── ACTIONS ─── */
.form-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 16px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.btn-primary {
    padding: 14px 32px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s ease;
}
.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26, 86, 219, 0.3);
}

.status-msg {
    color: var(--success);
    font-weight: 600;
    font-size: 0.88rem;
    opacity: 0;
    transition: opacity 0.3s;
}
.status-msg.show { opacity: 1; }

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
    .form-grid.two-col,
    .form-grid.three-col { grid-template-columns: 1fr; }
    .tabs { gap: 2px; }
    .tab-btn { min-width: 90px; font-size: 0.72rem; padding: 8px 4px; }
    header { flex-direction: column; gap: 12px; align-items: flex-start; }
    form { padding: 20px; }
    .checklist { grid-template-columns: 1fr; }
}