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

body {
    font-family: 'Segoe UI', sans-serif;
    background: #f5f5f5;
    color: #1a1a1a;
}

.app {
    max-width: 900px;
    margin: 0 auto;
    background: #fff;
    min-height: 100vh;
}

.screen { display: none; }
.screen.active { display: block; }

.header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #e8e8e8;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-circle {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 2px solid #1a1a1a;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: #1a1a1a;
    flex-shrink: 0;
}

.header h1 {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
}

.header p {
    font-size: 13px;
    color: #888;
    margin-top: 2px;
}

.back-btn {
    font-size: 13px;
    color: #555;
    cursor: pointer;
    border: 1px solid #ddd;
    padding: 5px 12px;
    border-radius: 6px;
    background: transparent;
}

.back-btn:hover { background: #f5f5f5; }

.home-body {
    padding: 3rem 1.5rem;
}

.home-body h2 {
    font-size: 15px;
    font-weight: 500;
    color: #888;
    margin-bottom: 1.5rem;
    text-align: center;
}

.mode-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    max-width: 560px;
    margin: 0 auto;
}

.mode-card {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 12px;
    padding: 2rem 1.5rem;
    cursor: pointer;
    text-align: center;
    transition: border-color 0.15s, background 0.15s;
}

.mode-card:hover {
    border-color: #999;
    background: #fafafa;
}

.mode-card:last-child:nth-child(odd) {
    grid-column: 1 / -1;
    max-width: 260px;
    margin: 0 auto;
    width: 100%;
}

.mode-icon { font-size: 32px; margin-bottom: 1rem; }
.mode-title { font-size: 16px; font-weight: 600; color: #1a1a1a; margin-bottom: 6px; }
.mode-desc { font-size: 12px; color: #888; line-height: 1.5; }

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    padding: 1rem 1.5rem;
}

.stat {
    background: #f5f5f5;
    border-radius: 8px;
    padding: 0.75rem 1rem;
}

.stat-label { font-size: 11px; color: #888; margin-bottom: 4px; }
.stat-value { font-size: 22px; font-weight: 600; color: #1a1a1a; }
.stat-value.warning { color: #d97706; }
.stat-value.success { color: #16a34a; }

.toolbar {
    padding: 1rem 1.5rem;
    display: flex;
    gap: 10px;
    align-items: center;
    border-bottom: 1px solid #e8e8e8;
    flex-wrap: wrap;
}

.search-wrap {
    flex: 1;
    min-width: 180px;
    position: relative;
}

.search-wrap input {
    width: 100%;
    padding: 7px 12px 7px 28px;
    font-size: 13px;
    border-radius: 6px;
    border: 1px solid #ddd;
    background: #f9f9f9;
    color: #1a1a1a;
}

.search-icon {
    position: absolute;
    left: 9px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 13px;
    color: #aaa;
}

select {
    padding: 7px 12px;
    font-size: 13px;
    border-radius: 6px;
    border: 1px solid #ddd;
    background: #f9f9f9;
    color: #1a1a1a;
}

.table-wrap {
    padding: 0 1.5rem 1.5rem;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

thead th {
    text-align: left;
    padding: 8px 12px;
    font-size: 11px;
    font-weight: 600;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid #e8e8e8;
}

tbody tr { border-bottom: 1px solid #f0f0f0; }
tbody tr:hover { background: #fafafa; }
tbody td { padding: 10px 12px; color: #1a1a1a; }

.ref {
    font-family: monospace;
    font-size: 12px;
    background: #f5f5f5;
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid #e8e8e8;
}

.pill {
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 6px;
    font-weight: 500;
    display: inline-block;
}

.pill-pending { background: #fef3c7; color: #92400e; }
.pill-received { background: #dcfce7; color: #166534; }

.form-body { padding: 1.5rem; }

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }

label {
    font-size: 12px;
    font-weight: 600;
    color: #555;
}

input[type=text],
input[type=date],
textarea,
select {
    padding: 8px 12px;
    font-size: 13px;
    border-radius: 6px;
    border: 1px solid #ddd;
    background: #f9f9f9;
    color: #1a1a1a;
    width: 100%;
}

textarea {
    resize: vertical;
    min-height: 70px;
}

.submit-btn {
    margin-top: 1.5rem;
    width: 100%;
    padding: 10px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 6px;
    border: 1px solid #ddd;
    background: #1a1a1a;
    color: #fff;
    cursor: pointer;
}

.submit-btn:hover { background: #333; }

.btn-recibir {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid #16a34a;
    background: transparent;
    color: #16a34a;
    cursor: pointer;
    margin-right: 6px;
}

.btn-recibir:hover { background: #dcfce7; }

.btn-recibir-done {
    border-color: #aaa;
    color: #aaa;
    cursor: not-allowed;
}

.btn-editar {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid #ddd;
    background: transparent;
    color: #555;
    cursor: pointer;
}

.btn-editar:hover { background: #f5f5f5; }