:root {
    /* Commercial Blue Palette - Solid Colors Only */
    --ss-primary: #004ecc;
    --ss-primary-dark: #003ba1;
    --ss-accent: #3b82f6;
    --ss-success: #10b981;
    --ss-warning: #f59e0b;
    --ss-bg: #f8fafc;
    --ss-surface: #ffffff;
    --ss-border: #e2e8f0;
    --ss-text: #0f172a;
    --ss-muted: #64748b;
    --ss-soft: #eff6ff;
    --ss-soft-success: #ecfdf5;
    --ss-warm: #f1f5f9;
    --ss-danger-soft: #fef2f2;
    --ss-danger-border: #fecaca;
    /* Commercial UI metrics */
    --ss-shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --ss-radius-lg: 12px;
    --ss-radius-md: 8px;
    --ss-radius-sm: 6px;
}

body {
    background-color: var(--ss-bg);
    color: var(--ss-text);
    font-family: 'Inter', -apple-system, system-ui, sans-serif;
    letter-spacing: -0.01em;
}

.ss-page {
    padding: 32px 0 60px;
}

.ss-grid {
    align-items: start;
}

.ss-hero {
    background-color: var(--ss-primary);
    color: #ffffff;
    border-radius: var(--ss-radius-lg);
    padding: 40px;
    box-shadow: var(--ss-shadow);
    position: relative;
    margin-bottom: 24px;
    border: 1px solid var(--ss-primary-dark);
}

.ss-hero-receive {
    background-color: var(--ss-primary-dark);
}

.ss-hero-badge {
    display: inline-flex;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #ffffff;
    border-radius: var(--ss-radius-sm);
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.ss-hero h1 {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.03em;
}

.ss-hero p {
    font-size: 1.1rem;
    line-height: 1.6;
    margin: 0;
    max-width: 650px;
    color: rgba(255, 255, 255, 0.9);
}

.ss-card {
    background-color: var(--ss-surface);
    border: 1px solid var(--ss-border);
    border-radius: var(--ss-radius-lg);
    box-shadow: var(--ss-shadow);
    overflow: hidden;
}

    .ss-card + .ss-card {
        margin-top: 24px;
    }

.ss-card-header {
    padding: 24px 24px 0;
    background-color: var(--ss-surface);
}

    .ss-card-header h3 {
        margin: 0;
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--ss-text);
    }

    .ss-card-header p {
        margin: 4px 0 0;
        font-size: 0.95rem;
        color: var(--ss-muted);
    }

.ss-card-body {
    padding: 24px;
}

.ss-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--ss-text);
    margin-bottom: 8px;
}

.ss-input,
.ss-textarea {
    border: 1px solid var(--ss-border);
    border-radius: var(--ss-radius-md);
    padding: 12px 16px;
    font-size: 1rem;
    color: var(--ss-text);
    background-color: #ffffff;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

    .ss-input:focus,
    .ss-textarea:focus {
        border-color: var(--ss-primary);
        box-shadow: 0 0 0 4px rgba(0, 78, 204, 0.1);
        outline: none;
    }

.ss-textarea {
    resize: none;
    min-height: 100px;
}

.ss-note {
    background-color: var(--ss-soft);
    border: 1px solid #bfdbfe;
    border-radius: var(--ss-radius-md);
    padding: 16px;
    font-size: 0.9rem;
    color: var(--ss-primary-dark);
    font-weight: 500;
}

.ss-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.ss-btn-primary,
.ss-btn-secondary,
.ss-btn-success {
    border-radius: var(--ss-radius-md);
    padding: 12px 24px;
    font-weight: 700;
    font-size: 0.95rem;
    border: 1px solid transparent;
    transition: all 0.2s ease;
    text-transform: none;
}

.ss-btn-primary {
    background-color: var(--ss-primary);
    border-color: var(--ss-primary);
    color: #ffffff;
}

    .ss-btn-primary:hover {
        background-color: var(--ss-primary-dark);
        border-color: var(--ss-primary-dark);
    }

.ss-btn-secondary {
    background-color: #ffffff;
    border-color: var(--ss-border);
    color: var(--ss-text);
}

    .ss-btn-secondary:hover {
        background-color: var(--ss-bg);
        border-color: var(--ss-muted);
    }

.ss-btn-success {
    background-color: var(--ss-success);
    border-color: var(--ss-success);
    color: #ffffff;
}

.ss-status-list,
.ss-info-grid,
.ss-ack-meta {
    display: grid;
    gap: 12px;
}

.ss-status-item,
.ss-info-item,
.ss-ack-meta-item {
    background-color: var(--ss-bg);
    border: 1px solid var(--ss-border);
    border-radius: var(--ss-radius-md);
    padding: 16px;
}

.ss-status-label,
.ss-info-label,
.ss-ack-meta-label {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--ss-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.ss-status-value,
.ss-info-value,
.ss-ack-meta-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--ss-text);
}

.ss-result-box {
    background-color: #ffffff;
    border: 1px solid var(--ss-border);
    border-radius: var(--ss-radius-lg);
    padding: 20px;
}

.ss-kv {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 12px;
    margin: 0;
}

    .ss-kv dt {
        color: var(--ss-muted);
        font-weight: 700;
        font-size: 0.8rem;
        text-transform: uppercase;
    }

    .ss-kv dd {
        margin: 0;
        color: var(--ss-text);
        font-weight: 700;
    }

.ss-progress-wrap {
    background-color: var(--ss-bg);
    border: 1px solid var(--ss-border);
    border-radius: var(--ss-radius-md);
    padding: 20px;
}

.ss-progress {
    height: 12px;
    border-radius: 6px;
    background-color: var(--ss-border);
}

    .ss-progress .progress-bar {
        background-color: var(--ss-primary); /* Solid Blue */
        font-weight: 700;
        font-size: 0.7rem;
    }

.ss-progress-success .progress-bar {
    background-color: var(--ss-success); /* Solid Green */
}

.ss-qr-box {
    display: inline-block;
    background-color: #ffffff;
    border: 1px solid var(--ss-border);
    border-radius: var(--ss-radius-md);
    padding: 16px;
}

.ss-muted {
    color: var(--ss-muted);
    font-size: 0.95rem;
}

.ss-ack-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: var(--ss-soft-success);
    color: var(--ss-success);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.ss-complete-modal {
    border: none;
    border-radius: var(--ss-radius-lg);
}

.ss-invalid-wrap {
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.ss-invalid-card {
    background-color: var(--ss-surface);
    border: 1px solid var(--ss-border);
    border-radius: var(--ss-radius-lg);
    box-shadow: var(--ss-shadow);
}

.ss-invalid-top {
    background-color: var(--ss-primary);
    color: #ffffff;
    padding: 32px;
}

    .ss-invalid-top h2 {
        margin: 0;
        font-size: 1.75rem;
        font-weight: 800;
    }

.ss-invalid-body {
    padding: 32px;
}

.ss-alert {
    background-color: var(--ss-danger-soft);
    border-left: 4px solid #ef4444;
    border-radius: var(--ss-radius-sm);
    padding: 16px;
    color: #991b1b;
    font-weight: 500;
}

@media (max-width: 767.98px) {
    .ss-hero {
        padding: 24px;
    }

        .ss-hero h1 {
            font-size: 1.75rem;
        }

    .ss-kv {
        grid-template-columns: 1fr;
    }

    .ss-actions {
        flex-direction: column;
    }

        .ss-actions .btn {
            width: 100%;
        }
}